### C# Setup for PDF Generation API

Source: https://docs.pdf.co/api-reference/pdf-from-html/template-id

This C# code provides the basic setup for interacting with the PDF.co API, including API key and namespace declarations. It serves as a starting point for implementing PDF generation functionalities.

```csharp
using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

namespace PDFcoApiExample
{
  class Program
  {
    // The authentication key (API Key).
    // Get your own by registering at https://app.pdf.co
    const String API_KEY = "***********************************";

    static void Main(string[] args)
    {
      // --TemplateID--
      /* 
        Please follow below steps to create your own HTML Template and get "templateId". 
        1. Add new html template in app.pdf.co/templates/html
        2. Copy paste your html template code into this new template. Sample HTML templates can be found at "https://github.com/pdfdotco/pdf-co-api-samples/tree/master/PDF%20from%20HTML%20template/TEMPLATES-SAMPLES"
        3. Save this new template
        4. Copy it’s ID to clipboard
        5. Now set ID of the template into “templateId” parameter
      */

```

--------------------------------

### Compress PDF using Node.js

Source: https://docs.pdf.co/api-reference/pdf-compress

This Node.js example shows how to compress a PDF file by first uploading it to pdf.co and then processing it. Ensure you have the 'request' module installed (`npm install request`) and replace '***********************************' with your API key.

```javascript
/*jshint esversion: 6 */

var https = require("https");
var path = require("path");
var fs = require("fs");

// `request` module is required for file upload.
// Use "npm install request" command to install.
var request = require("request");

// The authentication key (API Key).
// Get your own by registering at https://app.pdf.co
const API_KEY = "***********************************";


// Source PDF file
const SourceFile = "./sample.pdf";
// PDF document password. Leave empty for unprotected documents.
const Password = "";
// Destination PDF file name
const DestinationFile = "./result.pdf";


// 1. RETRIEVE PRESIGNED URL TO UPLOAD FILE.
getPresignedUrl(API_KEY, SourceFile)
  .then(([uploadUrl, uploadedFileUrl]) => {
      // 2. UPLOAD THE FILE TO CLOUD.
      uploadFile(API_KEY, SourceFile, uploadUrl)
          .then(() => {
              // 3. COMPRESS UPLOADED PDF FILE
              compressPDF(API_KEY, uploadedFileUrl, Password, DestinationFile);
          })
          .catch(e => {
              console.log(e);
          });
  })
  .catch(e => {
      console.log(e);
  });


function getPresignedUrl(apiKey, localFile) {
  return new Promise(resolve => {
      // Prepare request to `Get Presigned URL` API endpoint
      let queryPath = `/v1/file/upload/get-presigned-url?contenttype=application/octet-stream&name=${path.basename(SourceFile)}`;
      let reqOptions = {
          host: "api.pdf.co",
          path: encodeURI(queryPath),
          headers: { "x-api-key": API_KEY }
      };
      // Send request
      https.get(reqOptions, (response) => {
          response.on("data", (d) => {
              let data = JSON.parse(d);
              if (data.error == false) {
                  // Return presigned url we received
                  resolve([data.presignedUrl, data.url]);
              }
              else {
                  // Service reported error
                  console.log("getPresignedUrl(): " + data.message);
              }
          });
      })
          .on("error", (e) => {
              // Request error
              console.log("getPresignedUrl(): " + e);
          });
  });
}

```

--------------------------------

### Python PDF.co API Setup

Source: https://docs.pdf.co/api-reference/pdf-change-text-searchable/searchable

Initializes the necessary libraries and configuration for interacting with the PDF.co Web API in Python. Ensure you have the 'requests' library installed.

```python
import os
import requests # pip install requests

# The authentication key (API Key).
# Get your own by registering at https://app.pdf.co
API_KEY = "******************************************"

# Base URL for PDF.co Web API requests
BASE_URL = "https://api.pdf.co/v1"

```

--------------------------------

### C# Profile Example

Source: https://docs.pdf.co/api-reference/profiles

Example of setting 'profiles' parameter with TrimSpaces and PreserveFormattingOnTextExtraction in C#.

```json
{
 "profiles": "'TrimSpaces': 'True' , 'PreserveFormattingOnTextExtraction': 'True'"
}
```

--------------------------------

### Java SDK Example

Source: https://docs.pdf.co/api-reference/pdf-from-html/convert

Example of how to use the PDF.co Java SDK to convert HTML to PDF.

```APIDOC
## Convert HTML to PDF (Java)

### Description
This code sample demonstrates how to convert an HTML string to a PDF file using the PDF.co API with Java.

### Method
POST

### Endpoint
https://api.pdf.co/v1/pdf/convert/from/html

### Parameters
#### Request Body
- **html** (string) - Required - The HTML content to convert.
- **name** (string) - Optional - The name of the output PDF file.
- **margins** (string) - Optional - CSS-style margins (e.g., "5px 5px 5px 5px").
- **paperSize** (string) - Optional - Paper size (e.g., "Letter", "A4").
- **orientation** (string) - Optional - Page orientation ("Portrait" or "Landscape").
- **printBackground** (boolean) - Optional - Whether to print background colors and images (defaults to true).
- **async** (boolean) - Optional - Whether to process the request asynchronously.
- **header** (string) - Optional - HTML content for the header.
- **footer** (string) - Optional - HTML content for the footer.

### Request Example
```json
{
  "html": "<html><body><h1>Hello World</h1></body></html>",
  "name": "result.pdf"
}
```

### Response
#### Success Response (200)
- **error** (boolean) - Indicates if an error occurred.
- **message** (string) - A message describing the result or error.
- **url** (string) - The URL of the generated PDF file if successful.

#### Response Example
```json
{
  "error": false,
  "message": "",
  "url": "https://cdn.pdf.co/pdf/result.pdf"
}
```
```

--------------------------------

### Upload PDF and Find Text (C#)

Source: https://docs.pdf.co/api-reference/pdf-find/basic

This C# example shows how to upload a PDF and search for text using regular expressions. It covers getting a presigned URL, uploading the file, and then calling the PDF Text Search API.

```csharp
using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

namespace PDFcoApiExample
{
    class Program
    {
        // The authentication key (API Key).
        // Get your own by registering at https://app.pdf.co
        const String API_KEY = "*********************************";

        // Source PDF file
        const string SourceFile = @".\sample.pdf";

        // Comma-separated list of page indices (or ranges) to process. Leave empty for all pages. Example: '0,2-5,7-'.
        const string Pages = "";

        // PDF document password. Leave empty for unprotected documents.
        const string Password = "";

        // Search string.
        const string SearchString = @"\d{1,}\.\d\d"; // Regular expression to find numbers like '100.00'
                                                     // Note: do not use `+` char in regex, but use `{1,}` instead.
                                                     // `+` char is valid for URL and will not be escaped, and it will become a space char on the server side.

        // Enable regular expressions (Regex)
        const bool RegexSearch = true;


        static void Main(string[] args)
        {
            // Create standard .NET web client instance
            WebClient webClient = new WebClient();

            // Set API Key
            webClient.Headers.Add("x-api-key", API_KEY);

            // 1. RETRIEVE THE PRESIGNED URL TO UPLOAD THE FILE.
            // * If you already have a direct file URL, skip to the step 3.

            // Prepare URL for `Get Presigned URL` API call
            string query = Uri.EscapeUriString(string.Format(
                "https://api.pdf.co/v1/file/upload/get-presigned-url?contenttype=application/octet-stream&name={0}",
                Path.GetFileName(SourceFile)));

            try
            {
                // Execute request
                string response = webClient.DownloadString(query);

                // Parse JSON response
                JObject json = JObject.Parse(response);

                if (json["error"].ToObject<bool>() == false)
                {
                    // Get URL to use for the file upload
                    string uploadUrl = json["presignedUrl"].ToString();
                    string uploadedFileUrl = json["url"].ToString();

                    // 2. UPLOAD THE FILE TO CLOUD.
                    webClient.Headers.Add("content-type", "application/octet-stream");
                    webClient.UploadFile(uploadUrl, "PUT", SourceFile); // You can use UploadData() instead if your file is byte[] or Stream

                    // 3. MAKE UPLOADED PDF FILE SEARCHABLE

                    // URL for `PDF Text Search` API call
                    // See documentation: https://docs.pdf.co
                    string url = "https://api.pdf.co/v1/pdf/find";

                    // Prepare requests params as JSON
                    Dictionary<string, object> parameters = new Dictionary<string, object>();
                    parameters.Add("password", Password);
                    parameters.Add("pages", Pages);
                    parameters.Add("url", uploadedFileUrl);
                    parameters.Add("searchString", SearchString);
                    parameters.Add("regexSearch", RegexSearch);

```

--------------------------------

### C# SDK Example

Source: https://docs.pdf.co/api-reference/pdf-split/by-text-search-or-barcode

This C# code snippet shows how to set up the WebClient, add the API key, and prepare for making requests to the PDF.co API for splitting PDF documents.

```APIDOC
## C# SDK Example

### Description
This C# code snippet shows how to set up the WebClient, add the API key, and prepare for making requests to the PDF.co API for splitting PDF documents.

### Method
POST

### Endpoint
`/pdf/split/by/text_search_or_barcode`

### Parameters
#### Query Parameters
- **name** (string) - Required - The name of the file to be processed.
- **url** (string) - Required - The URL of the file to be processed.
- **searchString** (string) - Optional - The text string to search for within the PDF to determine split points.
- **barcodeType** (string) - Optional - The type of barcode to search for (e.g., "All", "QR", "Code128", "PDF417").
- **pages** (string) - Optional - Specifies the pages to process (e.g., "1-10", "1,3,5").
- **inline** (boolean) - Optional - If true, the result will be returned directly in the response; otherwise, a URL will be provided.
- **async** (boolean) - Optional - If true, the request will be processed asynchronously.

### Request Example
```csharp
using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

namespace PDFcoApiExample
{
  class Program
  {
    // The authentication key (API Key).
    // Get your own by registering at https://app.pdf.co
    const String API_KEY = "***********************************";
    
    // Source PDF file to split
    const string SourceFile = @".\sample.pdf";
    
    static void Main(string[] args)
    {
      // Create standard .NET web client instance
      WebClient webClient = new WebClient();

      // Set API Key
      webClient.Headers.Add("x-api-key", API_KEY);

      // ... (rest of the C# code for uploading, splitting, and downloading would go here)
    }
  }
}
```
```

--------------------------------

### Example File Download URL

Source: https://docs.pdf.co/api-reference/file-download

An example of a complete URL for downloading a file using a specific filetoken.

```text
https://api.pdf.co/v1/file/download/a1d30e75adf5eaa.................
```

--------------------------------

### Example JSON Response for Upload URL GET

Source: https://docs.pdf.co/api-reference/file-upload/upload-url-get

This is a typical JSON response when successfully uploading a file from a URL using the GET method. It includes the direct URL to the file, expiration timestamp, status, and credit information.

```json
{
  "url": "https://pdf-temp-files.s3.amazonaws.com/97415d1c45a04b29ac42c8dc01883316/sample.pdf",
  "error": false,
  "status": 200,
  "name": "sample.pdf",
  "remainingCredits": 77765
}
```

--------------------------------

### Retrieve a Specific Template

Source: https://docs.pdf.co/api-reference/documentparser/templates-id

This example demonstrates how to retrieve details for a specific document parser template using its ID via a GET request.

```APIDOC
## GET /pdf/documentparser/templates/{id}

### Description
Retrieves the details of a specific document parser template.

### Method
GET

### Endpoint
/pdf/documentparser/templates/{id}

### Parameters
#### Path Parameters
- **id** (integer) - Required - The unique identifier of the template to retrieve.

#### Request Example
```bash
curl --location --request GET 'https://api.pdf.co/v1/pdf/documentparser/templates/1' \
--header 'Content-Type: application/json' \
--header 'x-api-key: {{x-api-key}}' \
--data-raw ''
```

### Response
#### Success Response (200)
- **templateId** (integer) - The ID of the template.
- **name** (string) - The name of the template.
- **template** (string) - The template configuration in YAML format.
- **createdDate** (string) - The date and time when the template was created.

#### Response Example
```json
{
  "templateId": 1,
  "name": "Invoice Template",
  "template": "field1:\n  type: text\n  regex: \"\\d+\"",
  "createdDate": "2023-10-27T10:00:00Z"
}
```
```

--------------------------------

### Python SDK Example

Source: https://docs.pdf.co/api-reference/pdf-split/by-text-search-or-barcode

This Python code demonstrates how to upload a file, initiate a split job based on text search or barcode, check the job status, and download the resulting PDF files.

```APIDOC
## Python SDK Example

### Description
This Python code demonstrates how to upload a file, initiate a split job based on text search or barcode, check the job status, and download the resulting PDF files.

### Method
POST

### Endpoint
`/pdf/split/by/text_search_or_barcode`

### Parameters
#### Query Parameters
- **name** (string) - Required - The name of the file to be processed.
- **url** (string) - Required - The URL of the file to be processed.
- **searchString** (string) - Optional - The text string to search for within the PDF to determine split points.
- **barcodeType** (string) - Optional - The type of barcode to search for (e.g., "All", "QR", "Code128", "PDF417").
- **pages** (string) - Optional - Specifies the pages to process (e.g., "1-10", "1,3,5").
- **inline** (boolean) - Optional - If true, the result will be returned directly in the response; otherwise, a URL will be provided.
- **async** (boolean) - Optional - If true, the request will be processed asynchronously.

### Request Example
```python
import requests
import time
import os
import datetime

# Define your API Key and Base URL
API_KEY = "YOUR_API_KEY"
BASE_URL = "https://api.pdf.co/v1"

def uploadFile(fileName):
    """Uploads file to the cloud"""
    url = f"{BASE_URL}/file/upload/get-presigned-url?contenttype=application/octet-stream&name={os.path.basename(fileName)}"
    response = requests.get(url, headers={ "x-api-key": API_KEY })
    if response.status_code == 200:
        json_data = response.json()
        if not json_data["error"]:
            uploadUrl = json_data["presignedUrl"]
            uploadedFileUrl = json_data["url"]
            with open(fileName, 'rb') as file:
                requests.put(uploadUrl, data=file, headers={ "x-api-key": API_KEY, "content-type": "application/octet-stream" })
            return uploadedFileUrl
        else:
            print(json_data["message"])
    else:
        print(f"Request error: {response.status_code} {response.reason}")
    return None

def checkJobStatus(jobId):
    """Checks server job status"""
    url = f"{BASE_URL}/job/check?jobid={jobId}"
    response = requests.get(url, headers={ "x-api-key": API_KEY })
    if response.status_code == 200:
        json_data = response.json()
        return json_data["status"]
    else:
        print(f"Request error: {response.status_code} {response.reason}")
    return None

def main():
    # Upload the source file
    sourceFileName = "sample.pdf"
    uploadedFileUrl = uploadFile(sourceFileName)

    if uploadedFileUrl:
        # Define parameters for splitting
        parameters = {
            "name": os.path.basename(sourceFileName),
            "url": uploadedFileUrl,
            "searchString": "Invoice", # Example: Split by text "Invoice"
            # "barcodeType": "QR", # Example: Or split by QR code
            "async": True
        }

        # Execute request to split PDF
        split_url = f"{BASE_URL}/pdf/split/by/text_search_or_barcode"
        response = requests.post(split_url, data=parameters, headers={ "x-api-key": API_KEY })

        if response.status_code == 200:
            json_data = response.json()
            if not json_data["error"]:
                jobId = json_data["jobId"]
                resultFilePlaceholder = json_data["url"]

                # Check the job status in a loop
                while True:
                    status = checkJobStatus(jobId)
                    print(f"{datetime.datetime.now().strftime('%H:%M.%S')}: {status}")

                    if status == "success":
                        resJsonImgFiles = requests.get(resultFilePlaceholder)
                        part = 1
                        for resultFileUrl in resJsonImgFiles.json():
                            r = requests.get(resultFileUrl, stream=True)
                            localFileUrl = f"Page{part}.pdf"
                            if r.status_code == 200:
                                with open(localFileUrl, 'wb') as file:
                                    for chunk in r:
                                        file.write(chunk)
                                print(f"Result file saved as \"{localFileUrl}\" file.")
                            else:
                                print(f"Request error: {response.status_code} {response.reason}")
                            part = part + 1
                        break
                    elif status == "working":
                        time.sleep(3)
                    else:
                        print(status)
                        break
            else:
                print(json_data["message"])
        else:
            print(f"Request error: {response.status_code} {response.reason}")

if __name__ == '__main__':
    main()
```
```

--------------------------------

### Check Background Job Status with Python

Source: https://docs.pdf.co/api-reference/background-job-check

This Python script uses the 'requests' library to check the status of a background job via the PDF.co API. It sends a GET request with the job ID and API key. Ensure you have the 'requests' library installed (`pip install requests`).

```python
import os
import requests # pip install requests

# The authentication key (API Key).
# Get your own by registering at https://app.pdf.co
API_KEY = "******************************************"
jobId = "******************************************"

# Base URL for PDF.co Web API requests
BASE_URL = "https://api.pdf.co/v1"

url = f"{BASE_URL}/job/check?jobid={jobId}"

response = requests.get(url, headers={ "x-api-key": API_KEY })
if (response.status_code == 200):
    json = response.json()
    return json["status"]
else:
    print(f"Request error: {response.status_code} {response.reason}")
```

--------------------------------

### Download File using CURL

Source: https://docs.pdf.co/api-reference/file-download

This example demonstrates how to download a file using a CURL command. Replace YOUR_FILETOKEN_HERE with your actual file token and ******************* with your API key.

```APIDOC
## GET /file/download/{fileToken}

### Description
Downloads a file from PDF.co storage using its file token.

### Method
GET

### Endpoint
https://api.pdf.co/v1/file/download/YOUR_FILETOKEN_HERE

### Headers
- **x-api-key** (string) - Required - Your PDF.co API key.

### Output
Saves the downloaded file as `downloaded-file.pdf` in the current directory.
```

--------------------------------

### C#: PDF Split Setup

Source: https://docs.pdf.co/api-reference/pdf-split/by-text-search-or-barcode

This C# code snippet sets up the necessary using directives, namespace, and constants for interacting with the PDF.co API, including the API key and source file path.

```csharp
using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

namespace PDFcoApiExample
{
  class Program
  {
    // The authentication key (API Key).
    // Get your own by registering at https://app.pdf.co
    const String API_KEY = "***********************************";
    
    // Source PDF file to split
    const string SourceFile = @".\sample.pdf";
    
    static void Main(string[] args)
    {
      // Create standard .NET web client instance
      WebClient webClient = new WebClient();

      // Set API Key
      webClient.Headers.Add("x-api-key", API_KEY);

```

--------------------------------

### Split PDF using Text Search (JavaScript/Node.js)

Source: https://docs.pdf.co/api-reference/pdf-split/by-text-search-or-barcode

This JavaScript code demonstrates how to split a PDF file using text search. It includes functions for getting a presigned URL, uploading the file, and then splitting it. Make sure to install the 'request' module using 'npm install request'.

```javascript
var https = require("https");
var path = require("path");
var fs = require("fs");

// `request` module is required for file upload.
// Use "npm install request" command to install.
var request = require("request");

// The authentication key (API Key).
// Get your own by registering at https://app.pdf.co
const API_KEY = "***********************************";


// Source PDF file to split
const SourceFile = "./sample.pdf";
// Split Search String
const SplitText = "invoice number";


// 1. RETRIEVE PRESIGNED URL TO UPLOAD FILE.
getPresignedUrl(API_KEY, SourceFile)
    .then(([uploadUrl, uploadedFileUrl]) => {
        // 2. UPLOAD THE FILE TO CLOUD.
        uploadFile(API_KEY, SourceFile, uploadUrl)
            .then(() => {
                // 3. SPLIT UPLOADED PDF
                splitPdf(API_KEY, uploadedFileUrl, SplitText);
            })
            .catch(e => {
                console.log(e);
            });
    })
    .catch(e => {
        console.log(e);
    });


function getPresignedUrl(apiKey, localFile) {
    return new Promise(resolve => {
        // Prepare request to `Get Presigned URL` API endpoint
        let queryPath = `/v1/file/upload/get-presigned-url?contenttype=application/octet-stream&name=${path.basename(SourceFile)}`;
        let reqOptions = {
            host: "api.pdf.co",
            path: encodeURI(queryPath),
            headers: { "x-api-key": API_KEY }
        };
        // Send request
        https.get(reqOptions, (response) => {
            response.on("data", (d) => {
                let data = JSON.parse(d);
                if (data.error == false) {
                    // Return presigned url we received
                    resolve([data.presignedUrl, data.url]);
                }
                else {
                    // Service reported error
                    console.log("getPresignedUrl(): " + data.message);
                }
            });
        })
            .on("error", (e) => {
                // Request error
                console.log("getPresignedUrl(): " + e);
            });
    });
}

function uploadFile(apiKey, localFile, uploadUrl) {
    return new Promise(resolve => {
        fs.readFile(SourceFile, (err, data) => {
            request({
                method: "PUT",
                url: uploadUrl,
                body: data,
                headers: {
                    "Content-Type": "application/octet-stream"
                }
            }, (err, res, body) => {
                if (!err) {
                    resolve();
                }
                else {
                    console.log("uploadFile() request error: " + err);
                }
            });
        });
    });
}

function splitPdf(apiKey, uploadedFileUrl, splitText) {
    // Prepare request to `Split PDF By Text` API endpoint
    var queryPath = `/v1/pdf/split2`;

    // JSON payload for api request
    var jsonPayload = JSON.stringify({
        searchString: splitText, url: uploadedFileUrl, async: true
    });

```

--------------------------------

### Get PDF Info using JavaScript (Node.js)

Source: https://docs.pdf.co/api-reference/pdf-info-reader

This JavaScript code demonstrates how to upload a PDF file and then retrieve its information using the pdf.co API. It requires the 'request' module for file uploads. Make sure to install it using 'npm install request'. Replace '***********************************' with your API key.

```javascript
var https = require("https");
var path = require("path");
var fs = require("fs");

// `request` module is required for file upload.
// Use "npm install request" command to install.
var request = require("request");

// The authentication key (API Key).
// Get your own by registering at https://app.pdf.co
const API_KEY = "***********************************";


// Source PDF file to get information
const SourceFile = "./sample.pdf";


// 1. RETRIEVE THE PRESIGNED URL TO UPLOAD THE FILE.
getPresignedUrl(API_KEY, SourceFile)
  .then(([uploadUrl, uploadedFileUrl]) => {
      // 2. UPLOAD THE FILE TO CLOUD.
      uploadFile(API_KEY, SourceFile, uploadUrl)
          .then(() => {
              // 3. GET INFORMATION FROM UPLOADED FILE
              getPdfInfo(API_KEY, uploadedFileUrl);
          })
          .catch(e => {
              console.log(e);
          });
  })
  .catch(e => {
      console.log(e);
  });


function getPresignedUrl(apiKey, localFile) {
  return new Promise(resolve => {
      // Prepare request to `Get Presigned URL` API endpoint
      let queryPath = `/v1/file/upload/get-presigned-url?contenttype=application/octet-stream&name=${path.basename(SourceFile)}`;
      let reqOptions = {
          host: "api.pdf.co",
          path: encodeURI(queryPath),
          headers: { "x-api-key": API_KEY }
      };
      // Send request
      https.get(reqOptions, (response) => {
          response.on("data", (d) => {
              let data = JSON.parse(d);
              if (data.error == false) {
                  // Return presigned url we received
                  resolve([data.presignedUrl, data.url]);
              }
              else {
                  // Service reported error
                  console.log("getPresignedUrl(): " + data.message);
              }
          });
      })
          .on("error", (e) => {
              // Request error
              console.log("getPresignedUrl(): " + e);
          });
  });
}

function uploadFile(apiKey, localFile, uploadUrl) {
  return new Promise(resolve => {
      fs.readFile(SourceFile, (err, data) => {
          request({
              method: "PUT",
              url: uploadUrl,
              body: data,
              headers: {
                  "Content-Type": "application/octet-stream"
              }
          }, (err, res, body) => {
              if (!err) {
                  resolve();
              }
              else {
                  console.log("uploadFile() request error: " + e);
              }
          });
      });
  });
}

function getPdfInfo(apiKey, uploadedFileUrl) {
  // Prepare URL for `PDF Info` API call
  var queryPath = `/v1/pdf/info`;

  // JSON payload for api request
  var jsonPayload = JSON.stringify({
      url: uploadedFileUrl
  });

  var reqOptions = {
      host: "api.pdf.co",
      method: "POST",
      path: queryPath,
      headers: {
          "x-api-key": apiKey,
          "Content-Type": "application/json",
          "Content-Length": Buffer.byteLength(jsonPayload, 'utf8')
      }
  };
  // Send request
  var postRequest = https.request(reqOptions, (response) => {
      response.on("data", (d) => {
          response.setEncoding("utf8");
          // Parse JSON response
          let data = JSON.parse(d);
          if (data.error == false) {
              // Display PDF document information
              for (var key in data.info) {
                  console.log(`${key}: ${data.info[key]}`);
              }
          }
          else {
              // Service reported error
              console.log("getPdfInfo(): " + data.message);
          }
      });
  })
      .on("error", (e) => {
          // Request error
          console.log("getPdfInfo(): " + e);
      });

  // Write request data
  postRequest.write(jsonPayload);
  postRequest.end();
}

```

--------------------------------

### Download File using C#

Source: https://docs.pdf.co/api-reference/file-download

This C# example demonstrates how to download a file using the PDF.co API. It sets up a WebClient to handle the download process. Replace YOUR_FILETOKEN_HERE and your API key.

```APIDOC
## GET /file/download/{fileToken}

### Description
Downloads a file from PDF.co storage using its file token via C#.

### Method
GET

### Endpoint
https://api.pdf.co/v1/file/download/YOUR_FILETOKEN_HERE

### Headers
- **x-api-key** (string) - Required - Your PDF.co API key.

### Output
Saves the downloaded file as `downloaded-file.pdf` in the current directory.
```

--------------------------------

### Optimize PDF using JavaScript (Node.js)

Source: https://docs.pdf.co/api-reference/pdf-optimize

This JavaScript code demonstrates how to optimize a PDF file using the pdf.co API in a Node.js environment. It includes steps for getting a presigned URL, uploading the file, and then optimizing it. Make sure to install the 'request' module using 'npm install request'.

```javascript
/*jshint esversion: 6 */

var https = require("https");
var path = require("path");
var fs = require("fs");

// `request` module is required for file upload.
// Use "npm install request" command to install.
var request = require("request");

// The authentication key (API Key).
// Get your own by registering at https://app.pdf.co
const API_KEY = "***********************************";


// Source PDF file
const SourceFile = "./sample.pdf";
// PDF document password. Leave empty for unprotected documents.
const Password = "";
// Destination PDF file name
const DestinationFile = "./result.pdf";


// 1. RETRIEVE PRESIGNED URL TO UPLOAD FILE.
getPresignedUrl(API_KEY, SourceFile)
  .then(([uploadUrl, uploadedFileUrl]) => {
      // 2. UPLOAD THE FILE TO CLOUD.
      uploadFile(API_KEY, SourceFile, uploadUrl)
          .then(() => {
              // 3. OPTIMIZE UPLOADED PDF FILE
              optimizePdf(API_KEY, uploadedFileUrl, Password, DestinationFile);
          })
          .catch(e => {
              console.log(e);
          });
  })
  .catch(e => {
      console.log(e);
  });


function getPresignedUrl(apiKey, localFile) {
  return new Promise(resolve => {
      // Prepare request to `Get Presigned URL` API endpoint
      let queryPath = `/v1/file/upload/get-presigned-url?contenttype=application/octet-stream&name=${path.basename(SourceFile)}`;
      let reqOptions = {
          host: "api.pdf.co",
          path: encodeURI(queryPath),
          headers: { "x-api-key": API_KEY }
      };
      // Send request
      https.get(reqOptions, (response) => {
          response.on("data", (d) => {
              let data = JSON.parse(d);
              if (data.error == false) {
                  // Return presigned url we received
                  resolve([data.presignedUrl, data.url]);
              }
              else {
                  // Service reported error
                  console.log("getPresignedUrl(): " + data.message);
              }
          });
      })
          .on("error", (e) => {
              // Request error
              console.log("getPresignedUrl(): " + e);
          });
  });
}

function uploadFile(apiKey, localFile, uploadUrl) {
  return new Promise(resolve => {
      fs.readFile(SourceFile, (err, data) => {
          request({
              method: "PUT",
              url: uploadUrl,
              body: data,
              headers: {
                  "Content-Type": "application/octet-stream"
              }
          }, (err, res, body) => {
              if (!err) {
                  resolve();
              }
              else {
                  console.log("uploadFile() request error: " + e);
              }
          });
      });
  });
}

function optimizePdf(apiKey, uploadedFileUrl, password, destinationFile) {
  // Prepare request to `Optimize PDF` API endpoint
  var queryPath = `/v1/pdf/optimize`;

  // JSON payload for api request
  var jsonPayload = JSON.stringify({
      name: path.basename(destinationFile), password: password, url: uploadedFileUrl, async: true
  });

  var reqOptions = {
      host: "api.pdf.co",
      method: "POST",
      path: queryPath,
      headers: {
          "x-api-key": apiKey,
          "Content-Type": "application/json",
          "Content-Length": Buffer.byteLength(jsonPayload, 'utf8')
      }
  };
  // Send request
  var postRequest = https.request(reqOptions, (response) => {
      response.on("data", (d) => {
          response.setEncoding("utf8");

          // Parse JSON response
          let data = JSON.parse(d);
          console.log(`Job #${data.jobId} has been created!`);


```

--------------------------------

### CURL - Defining Configuration Options

Source: https://docs.pdf.co/api-reference/pdf-compress

An advanced example showing how to compress a PDF with detailed configuration options for image processing and saving.

```APIDOC
## POST /v2/pdf/compress (with config)

### Description
Compresses a PDF file from a given URL with advanced configuration options for image processing and saving.

### Method
POST

### Endpoint
https://api.pdf.co/v2/pdf/compress

### Parameters
#### Request Body
- **async** (boolean) - Optional - If true, the operation will be performed asynchronously.
- **url** (string) - Required - The URL of the PDF file to compress.
- **config** (object) - Optional - Configuration object for compression settings.
  - **images** (object) - Settings for image compression.
    - **color** (object) - Settings for color images.
      - **skip** (boolean) - If true, skip color image processing.
      - **downsample** (object) - Downsampling settings for color images.
        - **skip** (boolean) - If true, skip downsampling.
        - **downsample_ppi** (integer) - Target PPI for downsampling.
        - **threshold_ppi** (integer) - PPI threshold for downsampling.
      - **compression** (object) - Compression settings for color images.
        - **skip** (boolean) - If true, skip compression.
        - **compression_format** (string) - Compression format (e.g., 'jpeg', 'jpeg2000').
        - **compression_params** (object) - Parameters for the chosen compression format.
          - **quality** (integer) - JPEG quality (0-100).
          - **quality_mode** (string) - JPEG2000 quality mode ('dB', 'layers').
          - **quality_layers** (array) - JPEG2000 quality layers.
    - **grayscale** (object) - Settings for grayscale images (similar structure to color images).
    - **monochrome** (object) - Settings for monochrome images.
      - **skip** (boolean) - If true, skip monochrome image processing.
      - **downsample** (object) - Downsampling settings for monochrome images.
        - **skip** (boolean) - If true, skip downsampling.
        - **downsample_ppi** (integer) - Target PPI for downsampling.
        - **threshold_ppi** (integer) - PPI threshold for downsampling.
      - **compression** (object) - Compression settings for monochrome images.
        - **skip** (boolean) - If true, skip compression.
        - **compression_format** (string) - Compression format (e.g., 'ccitt_g4').
        - **compression_params** (object) - Parameters for the chosen compression format.
  - **save** (object) - Settings for saving the PDF.
    - **garbage** (integer) - Value to control garbage collection during save.

### Request Example
```json
{
    "async": false,
    "url": "https://pdfco-test-files.s3.us-west-2.amazonaws.com/pdf-compress/sample.pdf",
    "config": {
        "images": {
            "color": {
                "skip": false,
                "downsample": {
                    "skip": false,
                    "downsample_ppi": 150,
                    "threshold_ppi": 225
                },
                "compression": {
                    "skip": false,
                    "compression_format": "jpeg",
                    "compression_params": {
                        "quality": 50
                    }
                }
            },
            "grayscale": {
                "skip": false,
                "downsample": {
                    "skip": false,
                    "downsample_ppi": 150,
                    "threshold_ppi": 225
                },
                "compression": {
                    "skip": false,
                    "compression_format": "jpeg2000",
                    "compression_params": {
                        "quality_mode": "dB",
                        "quality_layers": [36.0]
                    }
                }
            },
            "monochrome": {
                "skip": false,
                "downsample": {
                    "skip": false,
                    "downsample_ppi": 300,
                    "threshold_ppi": 450
                },
                "compression": {
                    "skip": false,
                    "compression_format": "ccitt_g4",
                    "compression_params": {}
                }
            }
        },
        "save": {
            "garbage": 4
        }
    }
}
```

### Response
#### Success Response (200)
- **status** (string) - The status of the operation.
- **name** (string) - The name of the compressed file.
- **downloadUrl** (string) - The URL to download the compressed PDF.
- **error** (boolean) - Indicates if an error occurred.
- **message** (string) - A message describing the result of the operation.
- **remainingCredits** (integer) - The number of remaining credits for the account.

#### Response Example
```json
{
  "error": false,
  "message": "",
  "remainingCredits": 100,
  "name": "result.pdf",
  "downloadUrl": "https://pdfco-test-files.s3.us-west-2.amazonaws.com/result.pdf"
}
```
```

--------------------------------

### C# PDF Text Search Example

Source: https://docs.pdf.co/api-reference/pdf-find

Use this C# code to upload a PDF and search for text using regular expressions. Ensure you have the Newtonsoft.Json library installed.

```csharp
using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

namespace PDFcoApiExample
{
    class Program
    {
        // The authentication key (API Key).
        // Get your own by registering at https://app.pdf.co
        const String API_KEY = "*********************************";

        // Source PDF file
        const string SourceFile = @".\sample.pdf";

        // Comma-separated list of page indices (or ranges) to process. Leave empty for all pages. Example: '0,2-5,7-'.
        const string Pages = "";

        // PDF document password. Leave empty for unprotected documents.
        const string Password = "";

        // Search string.
        const string SearchString = @"\d{1,}\.\d\d"; // Regular expression to find numbers like '100.00'
                                                     // Note: do not use `+` char in regex, but use `{1,}` instead.
                                                     // `+` char is valid for URL and will not be escaped, and it will become a space char on the server side.

        // Enable regular expressions (Regex)
        const bool RegexSearch = true;


        static void Main(string[] args)
        {
            // Create standard .NET web client instance
            WebClient webClient = new WebClient();

            // Set API Key
            webClient.Headers.Add("x-api-key", API_KEY);

            // 1. RETRIEVE THE PRESIGNED URL TO UPLOAD THE FILE.
            // * If you already have a direct file URL, skip to the step 3.

            // Prepare URL for `Get Presigned URL` API call
            string query = Uri.EscapeUriString(string.Format(
                "https://api.pdf.co/v1/file/upload/get-presigned-url?contenttype=application/octet-stream&name={0}",
                Path.GetFileName(SourceFile)));

            try
            {
                // Execute request
                string response = webClient.DownloadString(query);

                // Parse JSON response
                JObject json = JObject.Parse(response);

                if (json["error"].ToObject<bool>() == false)
                {
                    // Get URL to use for the file upload
                    string uploadUrl = json["presignedUrl"].ToString();
                    string uploadedFileUrl = json["url"].ToString();

                    // 2. UPLOAD THE FILE TO CLOUD.
                    webClient.Headers.Add("content-type", "application/octet-stream");
                    webClient.UploadFile(uploadUrl, "PUT", SourceFile); // You can use UploadData() instead if your file is byte[] or Stream

                    // 3. MAKE UPLOADED PDF FILE SEARCHABLE

                    // URL for `PDF Text Search` API call
                    // See documentation: https://docs.pdf.co
                    string url = "https://api.pdf.co/v1/pdf/find";

                    // Prepare requests params as JSON
                    Dictionary<string, object> parameters = new Dictionary<string, object>();
                    parameters.Add("password", Password);
                    parameters.Add("pages", Pages);
                    parameters.Add("url", uploadedFileUrl);
                    parameters.Add("searchString", SearchString);
                    parameters.Add("regexSearch", RegexSearch);

                    // Convert dictionary of params to JSON
                    string jsonPayload = JsonConvert.SerializeObject(parameters);

                    // Execute POST request with JSON payload
                    response = webClient.UploadString(url, jsonPayload);

                    // Parse JSON response
                    json = JObject.Parse(response);

                    if (json["error"].ToObject<bool>() == false)
                    {
                        foreach (JToken item in json["body"])
                        {
                            Console.WriteLine($"Found text \"{item["text"]}\" at coordinates {item["left"]}, {item["top"]}");
                        }
                    }
                    else
                    {
                        Console.WriteLine(json["message"].ToString());
                    }
                }
                else
                {
                    Console.WriteLine(json["message"].ToString());
                }
            }
            catch (WebException ex)
            {
                Console.WriteLine(ex.ToString());
            }

            webClient.Dispose();

            Console.WriteLine();
            Console.WriteLine("Press any key...");
            Console.ReadKey();
        }
    }
}

```

--------------------------------

### Account Balance Response Example

Source: https://docs.pdf.co/api-reference/account-balance-info

This is an example of a successful response from the account balance endpoint, showing the number of remaining credits.

```json
{
  "remainingCredits": 99795868
}
```

--------------------------------

### Make PDF Searchable using JavaScript (Node.js)

Source: https://docs.pdf.co/api-reference/pdf-change-text-searchable/searchable

This JavaScript code snippet shows how to make a PDF searchable using the pdf.co API. It includes functions to get a presigned URL for uploading, upload the file, and then make the PDF searchable. Ensure you have the 'request' module installed (`npm install request`).

```javascript
var https = require("https");
var path = require("path");
var fs = require("fs");

// `request` module is required for file upload.
// Use "npm install request" command to install.
var request = require("request");

// The authentication key (API Key).
// Get your own by registering at https://app.pdf.co
const API_KEY = "***********************************";


// Source PDF file
const SourceFile = "./sample.pdf";
// Comma-separated list of page indices (or ranges) to process. Leave empty for all pages. Example: '0,2-5,7-'.
const Pages = "";
// PDF document password. Leave empty for unprotected documents.
const Password = "";
// OCR language. "eng", "fra", "deu", "spa"  supported currently. Let us know if you need more.
const Language = "eng";
// Destination PDF file name
const DestinationFile = "./result.pdf";


// 1. RETRIEVE PRESIGNED URL TO UPLOAD FILE.
getPresignedUrl(API_KEY, SourceFile)
    .then(([uploadUrl, uploadedFileUrl]) => {
        // 2. UPLOAD THE FILE TO CLOUD.
        uploadFile(API_KEY, SourceFile, uploadUrl)
            .then(() => {
                // 3. MAKE UPLOADED PDF FILE SEARCHABLE
                makePdfSearchable(API_KEY, uploadedFileUrl, Password, Pages, Language, DestinationFile);
            })
            .catch(e => {
                console.log(e);
            });
    })
    .catch(e => {
        console.log(e);
    });


function getPresignedUrl(apiKey, localFile) {
    return new Promise(resolve => {
        // Prepare request to `Get Presigned URL` API endpoint
        let queryPath = `/v1/file/upload/get-presigned-url?contenttype=application/octet-stream&name=${path.basename(SourceFile)}`;
        let reqOptions = {
            host: "api.pdf.co",
            path: encodeURI(queryPath),
            headers: { "x-api-key": API_KEY }
        };
        // Send request
        https.get(reqOptions, (response) => {
            response.on("data", (d) => {
                let data = JSON.parse(d);
                if (data.error == false) {
                    // Return presigned url we received
                    resolve([data.presignedUrl, data.url]);
                }
                else {
                    // Service reported error
                    console.log("getPresignedUrl(): " + data.message);
                }
            });
        })
            .on("error", (e) => {
                // Request error
                console.log("getPresignedUrl(): " + e);
            });
    });
}

```