veraPDF is a purpose-built, open source, file-format validator covering all PDF/A and PDF/UA parts and conformance levels.
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PDF4QT – PDF editor
PDF4QT is a cross-platform PDF editor consisting of four applications.
Read morePDF Metadata Editor – simple GUI tool
PDF Metadata Editor is a simple tool you can use to edit the metadata (Author, Keywords, etc.) of a PDF document.
Read moreScans to PDF – create small, searchable PDFs from scanned documents
Scans to PDF lets you create small, searchable PDFs from scanned documents.
Read morePulsar – hyper-hackable text editor
Pulsar is a community-led hyper-hackable Text Editor. It’s forked from the abandoned Atom text editor. It’s built on Electron.
Read moreunlockR – simple tool to decrypt PDF files
unlockR is a simple tool to decrypt PDF files. It offers a GUI using GTK4.
Read morejpeg2pdf – convert PDF files
jpeg2pdf is a command-line tool which lets you convert images to PDF. It supports a variety of different image formats.
Read morePdfJumbler – rearrange, merge, delete, and rotate pages from PDF files
PdfJumbler is a simple tool to rearrange, merge, delete, and rotate pages from PDF files.
Read morepdfposter – print large posters on multiple sheets
pdfposter can be used to create a large poster by building it from multiple pages and/or printing it on large media.
Read more21 Best Free and Open Source Linux PDF Viewers
The PDF file format is one of the most common file formats in use today. This article recommends the best open source PDF viewers.
Read moreKiview – quick file preview
Kiview gives the user the ability to quickly preview different file types without the need to launch the default application.
Read moreShelf – browse and view documents
Shelf is a simple PDF and EPUB document browser and viewer which is part of Maui, a modular front-end framework.
Read moreJumpdf – keyboard-focused PDF viewer
Jumpdf is a keyboard-focused PDF viewer for documents where one needs to jump between different sections of the document frequently.
Read morepdfresurrect – analyze PDF documents
pdfresurrect is a C-based tool which analyzes and helps extract older “hidden” versions of a PDF from the current PDF.
Read moreCorePDF – simple lightweight PDF viewer
CorePDF is a lightweight PDF app based on Poppler. CorePDF is part of C Suite, an app suite of core apps based on Qt.
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