### Include Activation Dependency with Maven

Source: https://pdfbox.apache.org/3.0/dependencies.html

Include the activation library, which was removed from the JDK starting with JDK 9, for preflight and some examples. Use version 1.1.1.

```xml
<dependency>
    <groupId>javax.activation</groupId>
    <artifactId>activation</artifactId>
    <version>1.1.1</version>
</dependency>
```

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

### Extract Pages from PDF Starting at a Specific Page

Source: https://pdfbox.apache.org/3.0/commandline.html

Creates a new PDF containing all pages from a specified starting page to the end of the original document. Requires the input PDF file.

```bash
PDFSplit -startPage=5 -i=sample_with_13_pages.pdf
```

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

### Extract a Range of Pages from PDF

Source: https://pdfbox.apache.org/3.0/commandline.html

Creates a new PDF containing pages within a specified start and end page range. Requires the input PDF file.

```bash
PDFSplit -startPage=5 -endPage=10 -i=sample_with_13_pages.pdf
```

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

### Include JAXB API Dependency with Maven

Source: https://pdfbox.apache.org/3.0/dependencies.html

Include the jaxb-api library, which was removed from the JDK starting with JDK 9, for preflight and some examples. Use version 2.3.1.

```xml
<dependency>
    <groupId>javax.xml.bind</groupId>
    <artifactId>jaxb-api</artifactId>
    <version>2.3.1</version>
</dependency>
```

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

### Create PDF from Text

Source: https://pdfbox.apache.org/3.0/commandline.html

Use this command to generate a PDF document from a plain text file. Specify input and output files, and optionally configure character set, font size, line spacing, margins, page size, and font type.

```bash
java -jar pdfbox-app-3.y.z.jar fromtext -i=<infile> -o=<outfile>
```

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

### Create PDF from Images

Source: https://pdfbox.apache.org/3.0/commandline.html

This command converts image files into a PDF document. You can specify input and output files, and control page size, resizing behavior, and auto-orientation based on image proportions.

```bash
java -jar pdfbox-app-3.y.z.jar fromimage -i=<infile> -o=<outfile>
```

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

### Load PDF with Scratch File Cache

Source: https://pdfbox.apache.org/3.0/faq.html

This approach loads a PDF using a scratch file, allowing for mixed memory and disk usage to handle memory constraints.

```java
Loader.loadPDF(file, () -> new ScratchFile(MemoryUsageSetting.setupMixed(...)))
```

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

### Import XFDF Data to PDF

Source: https://pdfbox.apache.org/3.0/commandline.html

Imports AcroForm data from an XFDF file into a PDF document. Specify input PDF and XFDF data files.

```bash
java -jar pdfbox-app-3.y.z.jar import:xfdf [OPTIONS] -i=<infile>
```

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

### Overlay PDF with Content

Source: https://pdfbox.apache.org/3.0/commandline.html

Overlays a base PDF document with content from one or more overlay PDF files. Supports different overlay strategies for specific pages or all pages.

```bash
java -jar pdfbox-app-3.y.z.jar overlay [OPTIONS] -i=<infile> -o=<outfile>
```

```bash
overlayPDF -i=input.pdf -default=overlay.pdf -o=output.pdf
```

```bash
overlayPDF -i=input.pdf -default=defaultOverlay.pdf -page="10=overlayForPage10.pdf" -position=FOREGROUND -o=output.pdf
```

```bash
overlayPDF -i=input.pdf -odd=oddOverlay.pdf -even=evenOverlay.pdf -o=output.pdf
```

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

### Include Bouncy Castle PKIX Dependency with Maven

Source: https://pdfbox.apache.org/3.0/dependencies.html

Include the bcpkix-jdk18on library from Bouncy Castle for public key encryption/decryption and signing/verifying PDFs. Use version 1.81.

```xml
<dependency>
    <groupId>org.bouncycastle</groupId>
    <artifactId>bcpkix-jdk18on</artifactId>
    <version>1.81</version>
</dependency>
```

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

### List Available Printers

Source: https://pdfbox.apache.org/3.0/commandline.html

Lists all available printers and their settings that can be used with the PDFBox print application. This command helps in identifying the correct printer name.

```bash
java -jar pdfbox-app-3.y.z.jar print -listPrinters
```

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

### Add Libraries to Preflight Validator CLI Classpath

Source: https://pdfbox.apache.org/3.0/dependencies.html

Use this command to include JAR files from a 'lib' subdirectory in the classpath when running the Preflight validator command-line application. This is for A1b conformance checks.

```bash
java -cp "preflight-app-3.0.2.jar:./lib/*" org.apache.pdfbox.preflight.Validator_A1b args
```

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

### Configure Log4j for PDFBox

Source: https://pdfbox.apache.org/3.0/faq.html

To suppress Log4j warnings, initialize the log4j system properly. You can set the log4j configuration using a system property.

```bash
log4j:WARN No appenders could be found for logger (org.apache.pdfbox.util.ResourceLoader).
log4j:WARN Please initialize the log4j system properly.

```

```bash
java -Dlog4j.configuration=log4j.xml org.apache.pdfbox.ExtractText <PDF-file> <output-text-file>
```

```bash
log4j.configuration=file:///<path to config file>
```

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

### Include JAI Image I/O Core Dependency with Maven

Source: https://pdfbox.apache.org/3.0/dependencies.html

Include the JAI Image I/O Core library for reading JPEG 2000 (JPX) images in your project's pom.xml. Set the version field to the appropriate version.

```xml
<dependency>
    <groupId>com.github.jai-imageio</groupId>
    <artifactId>jai-imageio-core</artifactId>
    <version>...</version>
</dependency>
```

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

### Add Libraries to PDFBox CLI Classpath

Source: https://pdfbox.apache.org/3.0/dependencies.html

Use this command to include JAR files from a 'lib' subdirectory in the classpath when running the main PDFBox command-line application. Ensure the correct JAR file name and path are used.

```bash
java -cp "pdfbox-app-3.0.2.jar:./lib/*" org.apache.pdfbox.tools.PDFBox args
```

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

### Convert PDF Pages to Images

Source: https://pdfbox.apache.org/3.0/commandline.html

Renders each page of a PDF document into an image file. Supports various image formats and quality settings. Requires the input PDF file.

```bash
java -jar pdfbox-app-3.y.z.jar render [OPTIONS] -i=<infile>
```

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

### Include Bouncy Castle Provider Dependency with Maven

Source: https://pdfbox.apache.org/3.0/dependencies.html

Include the bcprov-jdk18on library from Bouncy Castle for public key encryption/decryption and signing/verifying PDFs. Use version 1.82.

```xml
<dependency>
    <groupId>org.bouncycastle</groupId>
    <artifactId>bcprov-jdk18on</artifactId>
    <version>1.82</version>
</dependency>
```

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

### Include JBIG2 ImageIO Dependency with Maven

Source: https://pdfbox.apache.org/3.0/dependencies.html

Include the JBIG2 library for reading JBIG2 images in your project's pom.xml. Set the version field to the appropriate version.

```xml
<dependency>
    <groupId>org.apache.pdfbox</groupId>
    <artifactId>jbig2-imageio</artifactId>
    <version>...</version>
</dependency>
```

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

### Include PDFBox Core Dependencies with Maven

Source: https://pdfbox.apache.org/3.0/dependencies.html

Add the main pdfbox library and its transitive dependencies to your project using Maven. Set the version field to the latest stable PDFBox version.

```xml
<dependency>
    <groupId>org.apache.pdfbox</groupId>
    <artifactId>pdfbox</artifactId>
    <version>...</version>
</dependency>
```

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

### Load PDF with Temporary File Cache

Source: https://pdfbox.apache.org/3.0/faq.html

Use this method to load a PDF using a temporary file for caching, which can help manage memory usage for large documents.

```java
Loader.loadPDF(file, IOUtils.createTempFileOnlyStreamCache())
```

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

### Create PDType1Font instance

Source: https://pdfbox.apache.org/3.0/migration.html

Instantiate PDType1Font using the new constructor with Standard14Fonts.FontName. Instances are no longer singletons and may require user caching.

```java
new PDType1Font(Standard14Fonts.FontName.HELVETICA);
```

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

### Load PDF using RandomAccessReadBufferedFile

Source: https://pdfbox.apache.org/3.0/migration.html

Use the Loader class with RandomAccessReadBufferedFile for flexible PDF loading. Ensure the PDDocument is closed properly to avoid issues.

```java
try (PDDocument document = Loader.loadPDF(new RandomAccessReadBufferedFile("yourfile.pdf")))
{
    for (PDPage page : document.getPages())
    {
        ....
    }
}

```

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

### Include Bouncy Castle Mail Dependency with Maven

Source: https://pdfbox.apache.org/3.0/dependencies.html

Include the bcmail-jdk18on library from Bouncy Castle for public key encryption/decryption and signing/verifying PDFs. Use version 1.82.

```xml
<dependency>
    <groupId>org.bouncycastle</groupId>
    <artifactId>bcmail-jdk18on</artifactId>
    <version>1.82</version>
</dependency>
```

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

### Include JAI Image I/O JPEG2000 Dependency with Maven

Source: https://pdfbox.apache.org/3.0/dependencies.html

Include the JAI Image I/O JPEG2000 library for reading JPEG 2000 (JPX) images in your project's pom.xml. Set the version field to the appropriate version.

```xml
<dependency>
    <groupId>com.github.jai-imageio</groupId>
    <artifactId>jai-imageio-jpeg2000</artifactId>
    <version>...</version>
</dependency>
```

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

### Print PDF Document

Source: https://pdfbox.apache.org/3.0/commandline.html

Sends a PDF document to a printer. Requires the input PDF file and appropriate printer permissions. Supports various printing options.

```bash
java -jar pdfbox-app-3.y.z.jar print [OPTIONS] -i=<infile>
```

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

### Enable Subsampling for Rendering

Source: https://pdfbox.apache.org/3.0/faq.html

Activate subsampling on the PDFRenderer to potentially reduce memory usage during image rendering.

```java
setSubsamplingAllowed(true);
```

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

### Split PDF into 2-Page Chunks

Source: https://pdfbox.apache.org/3.0/commandline.html

Splits a PDF into multiple files, with each file containing 2 pages, except for the last file which may contain fewer pages. Requires the input PDF file.

```bash
PDFSplit -split=2 -i=sample_with_13_pages.pdf
```

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

### Split PDF Document into Multiple Files

Source: https://pdfbox.apache.org/3.0/commandline.html

Splits a PDF document into smaller files. Each new file will be named with a sequential number appended to the original filename prefix. Use 'outputPrefix' to customize filenames.

```bash
java -jar pdfbox-app-3.y.z.jar split [OPTIONS] -i=<infile>
```

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

### Split a PDF Range into Multiple Files

Source: https://pdfbox.apache.org/3.0/commandline.html

Splits a specified range of pages from a PDF into multiple smaller files, each containing a set number of pages. Requires the input PDF file.

```bash
PDFSplit -split=2 -startPage=5 -endPage=10 -i=sample_with_13_pages.pdf
```

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

### Include TwelveMonkeys JPEG Dependency with Maven

Source: https://pdfbox.apache.org/3.0/dependencies.html

Include the TwelveMonkeys imageio-jpeg library for more reliable JPEG decoding in your project's pom.xml. Set the version field to the appropriate version.

```xml
<dependency>
    <groupId>com.twelvemonkeys.imageio</groupId>
    <artifactId>imageio-jpeg</artifactId>
    <version>...</version>
</dependency>
```

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

### Decompress PDF Document

Source: https://pdfbox.apache.org/3.0/commandline.html

Use this command to decompress a PDF document, making its content readable with a text editor. Specify the input PDF file and the output file path for the decompressed version. Optionally, provide a password or choose to skip image decompression.

```bash
java -jar pdfbox-app-3.y.z.jar decode [OPTIONS] <input-file> <output-file>
```

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

### Save PDF without Compression

Source: https://pdfbox.apache.org/3.0/migration.html

Override the default compressed saving behavior by using PDDocument.save with CompressParameters.NO_COMPRESSION, particularly for creating PDF/A-1b documents.

```java
PDDocument.save(PDDocument, CompressParameters.NO_COMPRESSION);
```

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

### Add pdfbox-io Maven Dependency

Source: https://pdfbox.apache.org/3.0/migration.html

Include the pdfbox-io module in your Maven project to utilize the new IO classes.

```xml
<dependency>
    <groupId>org.apache.pdfbox</groupId>
    <artifactId>pdfbox-io</artifactId>
</dependency>
```

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

### Debug PDF Structure

Source: https://pdfbox.apache.org/3.0/commandline.html

Analyzes and inspects the internal structure of an existing PDF document. Can optionally open a specified PDF file.

```bash
java -jar pdfbox-app-3.y.z.jar debug [inputfile]
```

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

### Add PDFBox 3.0 Maven Dependency

Source: https://pdfbox.apache.org/3.0/getting-started.html

Include this dependency in your Maven project to use the latest PDFBox release.

```xml
<dependency>
  <groupId>org.apache.pdfbox</groupId>
  <artifactId>pdfbox</artifactId>
  <version>3.0.7</version>
</dependency>
```

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

### Enable Text Sorting by Position

Source: https://pdfbox.apache.org/3.0/faq.html

Use this setting to extract text in a left-to-right, top-to-bottom order, which is often more intuitive than the default content stream order.

```java
setSortByPosition(true);
```

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

### Enable Pure Java CMYK Conversion for Rendering Performance

Source: https://pdfbox.apache.org/3.0/getting-started.html

Use this JVM argument to potentially improve PDF rendering performance, especially for pages with many images. This setting is available since PDFBox 2.0.4.

```java
-Dorg.apache.pdfbox.rendering.UsePureJavaCMYKConversion=true
```

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

### Merge PDF Documents

Source: https://pdfbox.apache.org/3.0/commandline.html

Merges a list of PDF documents into a single output PDF file. Requires specifying the output file and at least one input file.

```bash
java -jar pdfbox-app-3.y.z.jar merge [-hV] -o=outfile -i=<infile> [-i=<infile>]
```

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

### Properly Close PDDocument

Source: https://pdfbox.apache.org/3.0/faq.html

Ensure that all PDDocument objects are closed to avoid warnings. Use a finally block to guarantee the close() method is called, even if errors occur.

```java
PDDocument doc = new PDDocument(); 
try 
{
   doc = PDDocument.loadPDF( "my.pdf" ); 
}
finally 
{
   if( doc != null )
   {
      doc.close();
   }
}
```

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

### Extract Text from PDF

Source: https://pdfbox.apache.org/3.0/commandline.html

Extracts all text from a specified PDF document. Supports various output formats and page range selections.

```bash
java -jar pdfbox-app-3.y.z.jar export:text [OPTIONS] -i=<infile>
```

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

### Disable Resource Cache for Images

Source: https://pdfbox.apache.org/3.0/faq.html

Disable the cache for PDImageXObject objects to prevent excessive memory consumption, especially for PDFs with repeated images. This may slow down rendering for such files.

```java
PDDocument.setResourceCache(new DefaultResourceCache() {
    @Override
    public void put(COSObject indirect, PDXObject xobject) {
        // do nothing
    }
});
```

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

### Disable Gsub for Complex Scripts

Source: https://pdfbox.apache.org/3.0/migration.html

Deactivate the complex script feature, including Latin ligatures and Indian scripts, by calling TrueTypeFont.setEnableGsub(false) if visual differences are undesirable.

```java
TrueTypeFont.setEnableGsub(false);
```

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