> ## Documentation Index
> Fetch the complete documentation index at: https://docs.abbyy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Distribution Kit for Linux: PDF

> PDF-related resource files in the Linux distribution kit: shared libraries for PDF opening, export, encryption, and digital signing of recognized documents.

Resource files listed below are only necessary if you intend your application to process PDF files.

<table><thead><tr><th><p><strong>File name</strong></p></th><th><p><strong>Distribution</strong></p></th></tr></thead><tbody><tr><td colspan="2"><p><strong>Bin folder</strong></p></td></tr><tr><td><p>libImage.Format.Jbig2.so</p></td><td><p>This file is necessary for PDF export if you are saving pictures into the document using the JBIG2 image codec.</p></td></tr><tr><td><p>libImage.Format.Jpeg.so</p></td><td><p>This file is necessary for PDF export if you are saving pictures into the document using the JPEG image codec.</p></td></tr><tr><td><p>libImage.Format.Jpeg2k.so</p></td><td><p>This file is necessary for PDF export if you are saving pictures into the document using the JPEG 2000 image codec.</p></td></tr><tr><td><p>libImage.Format.Pdf.so<br />libPdfTools.Rasterizator.Pdfium.so<br />libpdfium.so<br />libPdfTools.PdfToolsAuxInfo.so</p></td><td><p>Mandatory for PDF opening.</p></td></tr><tr><td><p>libPdfTools.AdobeSupport.so<br />libExport.Pdf.so<br />libPdfTools.Encryption.so<br />libPdfToolkit.so<br />libPdfTools.CommonInstruments.so<br />libPdfTools.Heuristics.so</p></td><td><p>Necessary for PDF export.</p></td></tr><tr><td><p>libPdfTools.Crypto.so</p></td><td><p>Necessary for the digital signing support.</p></td></tr><tr><td><p>libPdfService.so</p></td><td><p>Redistribute this file if your application uses the <strong><a href="/fine-reader/engine/api-reference/engine-object-iengine-interface/processing-methods/injecttextlayer-method">IEngine::InjectTextLayer</a></strong> method.</p></td></tr><tr><td><p>libOpenTypeSubsetter.so</p></td><td><p>Necessary for export to PDF/A format.</p></td></tr><tr><td><p>libTextRendering.so</p></td><td><p>Necessary for PDF export.</p></td></tr><tr><td colspan="2"><p><strong>Data folder</strong></p></td></tr><tr><td><p>GlyphRecovery0.bin<br />GlyphRecovery1.bin</p></td><td><p>Mandatory for PDF opening.</p></td></tr><tr><td><p>DefaultProfiles.peps</p></td><td><p>Mandatory for PDF export.</p></td></tr><tr><td><p>DefaultFont.4.fontdata<br />DefaultMetricsBoldFont.4.fontdata<br />DefaultMetricsFont.4.fontdata<br />DefaultMetricsItalicBoldFont.4.fontdata<br />DefaultMetricsItalicFont.4.fontdata<br />DefaultFont.fnt</p></td><td><p>Mandatory for PDF export.</p></td></tr><tr><td colspan="2"><p><strong>Data/Resources/CMap folder</strong></p></td></tr><tr><td><p>Adobe-GB1-2<br />Adobe-GB1-4<br />Adobe-CNS1-0<br />Adobe-CNS1-3<br />Adobe-Japan1-2<br />Adobe-Japan1-4<br />Adobe-Korea1-1<br />UniGB-UCS2-H<br />UniGB-UCS2-V<br />UniCNS-UCS2-H<br />UniCNS-UCS2-V<br />UniJIS-UCS2-H<br />UniJIS-UCS2-V<br />UniKS-UCS2-H<br />UniKS-UCS2-V</p></td><td><p>Mandatory for PDF export.</p></td></tr><tr><td><p>All the files in this folder that are not explicitly listed here.</p></td><td><p>Mandatory for PDF opening and export.</p></td></tr></tbody></table>

See also

[Distribution Kit - Linux](/fine-reader/engine/distribution/distribution-linux/distribution-kit-linux)