locally hosted web application that allows you to perform various operations on PDF files.
Cost / License
- Freemium
- Open Source
Application types
Platforms
- Mac
- Windows
- Online
- Self-Hosted
- Cloudron
- Docker Hub




The best open source PDF Reader alternative to Adobe Acrobat DC is Stirling-PDF. If that doesn't suit you, our users have ranked more than 100 alternatives to Adobe Acrobat DC and 13 are open source PDF Readers so hopefully you can find a suitable replacement. Other interesting open source PDF Reader alternatives to Adobe Acrobat DC are BentoPDF, Sioyek, LEKTRA and Papers.
locally hosted web application that allows you to perform various operations on PDF files.




BentoPDF is a PDF Toolkit that works fully offline with no sign ups. It's fast, secure and forever free. In an era where data is a commodity, we take a different approach. All processing for BentoPDF tools happens locally in your browser.



Sioyek is a PDF viewer with minimal interface optimized for reading research papers and technical books.




High-performance viewer for documents and images offering split tabs, customizable single or book layouts, portals for side-by-side sections, instant search, line highlight, annotation tools, link hints, searchable highlights, session management, and TOML config.


A document viewer for the GNOME desktop. You can view, search or annotate documents in many different formats.


A feature-rich, privacy-focused PDF app built with Jetpack Compose and Material 3. View, edit, and manage PDFs with 12 powerful tools including merge, split, compress, rotate, lock/unlock, and more. Supports bookmarks, table of contents, full-text search, and auto-scroll for...




Privacy-first, offline PDF editor for Android. Merge, split, compress, convert and annotate PDFs — 100% on-device, no internet required.




Xreader is a document viewer capable of displaying multiple and single page document formats like PDF and Postscript.
Offers more than 15 free, open-source web-based PDF tools for editing, conversion, merging, splitting, compressing, metadata removal, and password removal, with all client-side processing, no ads, no file size or batch limits, and no registration required.




FormulatePro helps you open and write on PDF documents. You can fill out any PDF form document, drop in graphics, scribble with the mouse or a tablet, save and print.

Secure, local-first PDF editor. Edit, merge, split, OCR text extraction, and manage PDFs offline. No cloud.



It lacks many features and has bugs. The PDF open button sometimes disappears.