### Install pdf2json Globally

Source: https://github.com/modesty/pdf2json/blob/master/readme.md

Install the pdf2json package globally to enable direct command-line execution.

```javascript
npm install pdf2json -g
```

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

### Verify Node.js Version

Source: https://github.com/modesty/pdf2json/blob/master/readme.md

Check the installed Node.js version before proceeding with the installation. Ensure it meets the project's requirements.

```terminal
nodejs --version
v0.10.22
```

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

### Verify pdf2json Installation

Source: https://github.com/modesty/pdf2json/blob/master/readme.md

Check the installation path and version of the pdf2json command-line tool. This confirms successful global installation.

```terminal
which pdf2json
/usr/bin/pdf2json

pdf2json --version
0.6.2
```

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

### Install pdf2json Locally or Globally

Source: https://context7.com/modesty/pdf2json/llms.txt

Install the pdf2json module using npm for either programmatic use (local) or command-line interface (global).

```bash
npm install pdf2json
```

```bash
npm install -g pdf2json
```

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

### Example pdf2json --json output

Source: https://context7.com/modesty/pdf2json/llms.txt

This example demonstrates how to use the -j flag to output JSON and pipe it to grep to filter for the JSON object.

```bash
pdf2json -f ./form.pdf -o ./out/ -t -c -j | grep ' {'
```

```json
{
  "version": "4.0.3",
  "input": "./form.pdf",
  "outputs": [
    { "type": "json",    "path": "./out/form.json" },
    { "type": "fields",  "path": "./out/form.fields.json" },
    { "type": "content", "path": "./out/form.content.txt" }
  ],
  "stats": { "input": 1, "success": 1, "failed": 0 },
  "errors": [],
  "elapsedMs": 187
}
```

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

### Show Version or Help Info

Source: https://github.com/modesty/pdf2json/blob/master/readme.md

Use these flags to display the version number or more detailed help information for the command-line utility.

```javascript
node pdf2json.js -v
```

```javascript
node pdf2json.js -h
```

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

### Show pdf2json version or help

Source: https://context7.com/modesty/pdf2json/llms.txt

Use the -v flag to display the version and the -h flag to show help information.

```bash
pdf2json -v
```

```bash
pdf2json -h
```

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

### Verify Node Installation and Path

Source: https://github.com/modesty/pdf2json/blob/master/readme.md

Confirm that the 'node' command is correctly linked and accessible in the system's PATH. This verifies the symbolic link creation.

```terminal
which node
/usr/sbin/node

node --version
v4.5.0
```

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

### Install pdf2json Globally

Source: https://github.com/modesty/pdf2json/blob/master/readme.md

Install the pdf2json package globally using npm. This makes the pdf2json command-line tool available system-wide.

```terminal
$ npm install -g pdf2json
npm http GET https://registry.npmjs.org/pdf2json
npm http 304 https://registry.npmjs.org/pdf2json
/usr/bin/pdf2json -> /usr/lib/node_modules/pdf2json/bin/pdf2json
pdf2json@0.6.1 /usr/lib/node_modules/pdf2json
```

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

### Importing Dictionary Constants

Source: https://github.com/modesty/pdf2json/blob/master/readme.md

Demonstrates how to import the color, font face, and font style constants. The import path differs based on the library version.

```javascript
import { kColors, kFontFaces, kFontStyles } from "./lib/pdfconst.js"; // <-- pre 3.1.0
```

```javascript
import { kColors, kFontFaces, kFontStyles } from "pdf2json"; // <-- since 3.1.0
```

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

### PDF Metadata Example

Source: https://github.com/modesty/pdf2json/blob/master/readme.md

Example of the full metadata structure for a parsed PDF document, as of v2.0.0. This replaces the older 'Agency' and 'Id' fields.

```json
Meta: {
 PDFFormatVersion: '1.7',
 IsAcroFormPresent: true,
 IsXFAPresent: false,
 Author: 'SE:W:CAR:MP',
 Subject: 'U.S. Individual Income Tax Return',
 Creator: 'Adobe Acrobat Pro 10.1.8',
 Producer: 'Adobe Acrobat Pro 10.1.8',
 CreationDate: "D:20131203133943-08'00'",
 ModDate: "D:20140131180702-08'00'",
 Metadata: {
  'xmp:modifydate': '2014-01-31T18:07:02-08:00',
  'xmp:createdate': '2013-12-03T13:39:43-08:00',
  'xmp:metadatadate': '2014-01-31T18:07:02-08:00',
  'xmp:creatortool': 'Adobe Acrobat Pro 10.1.8',
  'dc:format': 'application/pdf',
  'dc:description': 'U.S. Individual Income Tax Return',
  'dc:creator': 'SE:W:CAR:MP',
  'xmpmm:documentid': 'uuid:4d81e082-7ef2-4df7-b07b-8190e5d3eadf',
  'xmpmm:instanceid': 'uuid:7ea96d1c-3d2f-284a-a469-f0f284a093de',
  'pdf:producer': 'Adobe Acrobat Pro 10.1.8',
  'adhocwf:state': '1',
  'adhocwf:version': '1.1'
 }
}
```

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

### Instantiate PDFParser

Source: https://context7.com/modesty/pdf2json/llms.txt

Create a new PDFParser instance. Pass `true` to `needRawText` to enable `getRawTextContent()`. An optional password string can be provided for encrypted PDFs.

```javascript
import PDFParser from "pdf2json";

// Basic parser (JSON output only)
const pdfParser = new PDFParser();

// Parser that also captures raw text
const pdfParserWithText = new PDFParser(null, true);

// Parser for a password-protected PDF
const pdfParserSecure = new PDFParser(null, false, "mySecretPassword");
```