Open-source PDF platform to edit, convert, OCR, sign, redact, and automate PDF workflows via a web UI and REST API.

88.2k stars7.8k forkslast commit Actively maintained

Web-based PDF toolkit for merging, splitting, compressing, converting, signing and editing PDF files. Provides browser, desktop and mobile clients, batch processing and integrations with cloud storage for uploading, downloading and basic PDF workflows.
Open-source PDF platform to edit, convert, OCR, sign, redact, and automate PDF workflows via a web UI and REST API.

88.2k stars7.8k forkslast commit Actively maintained
Self-hostable, privacy-first PDF toolkit that runs fully in the browser for editing, merging, converting, and processing PDFs without server-side uploads.

14.4k stars1.2k forksAGPL-3.0last commit Actively maintained
Gotenberg is a containerized HTTP API that converts HTML, Markdown, and Office documents to PDF using engines like Chromium and LibreOffice, with options to merge and automate outputs.

12.7k stars821 forksMITlast commit Actively maintained
OmniTools is a self-hosted web app providing browser-based utilities for images, video, PDF, text, date/time, math, and data formats, with client-side processing.

9.9k stars682 forksMITlast commit Actively maintained
Self-hosted image optimizer that compresses and converts images locally in your browser, works offline, and keeps files private with on-device processing.

2.7k stars136 forksGPL-3.0last commit Actively maintained
Self-hosted PDF manager to organize, view, annotate, sign, and share PDFs with multi-device reading progress, tagging, and optional access-controlled links.

1.8k stars117 forksAGPL-3.0last commit Actively maintained
Self-hosted web UI for file conversion, OCR for PDFs/images, and local Whisper-based audio transcription, wrapping common CLI tools with background jobs and history.
950 stars57 forksMITlast commit Slowing down
Self-hosted web app for signing PDFs (single or multi-signer), organizing pages (merge/rotate/extract), editing PDF metadata, and compressing files.

816 stars108 forksAGPL-3.0last commit Actively maintained
Self-hosted web app that removes background music and reduces noise from videos or audio (including URLs), using FFmpeg and DeepFilterNet-based enhancement.
719 stars51 forksMITlast commit Likely dormant
Next.js web app that reads EPUB, PDF, DOCX, MD and TXT using pluggable TTS providers, offering real-time read-along highlighting, word timestamps, and audiobook export.

483 stars71 forksMITlast commit Actively maintained
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 8 of 10 shipped a commit in the last six months. Licences in this list: AGPL-3.0, MIT, GPL-3.0. In exchange you take on hosting, backups and updates yourself.
Browse everything in Document Processing & PDF Tools.