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

90.5k stars8.2k forkslast commit Actively maintained
Cloud API for converting HTML/CSS or URLs into high-quality PDF and Excel documents. Supports advanced layout (headers/footers, pagination, page floats), PDF forms and accessibility tagging, asynchronous generation, hosted document URLs, encryption, and compliance.
Open-source PDF platform to edit, convert, OCR, sign, redact, and automate PDF workflows via a web UI and REST API.

90.5k stars8.2k forkslast commit Actively maintained
ConvertX is a self-hosted web file converter supporting 1000+ formats across documents, images, audio/video, ebooks, and 3D assets, with multi-file processing and accounts.

18.6k stars1k 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.

12.9k stars846 forksMITlast commit Actively maintained
Open-source platform for guided web interviews that collect user input, run logic, and generate documents (PDF, DOCX, RTF) or integrate with external services via APIs.

984 stars309 forksMITlast commit Actively maintained
Go-based self-hosted web archiver for personal/home use. Saves pages as PDF, captures HTTP headers, and stores single-file HTML. Provides a REST API and optional web UI.
197 stars5 forksBSD-3-Clauselast commit Slowing down
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. 4 of 5 shipped a commit in the last six months. Licences in this list: AGPL-3.0, MIT, BSD-3-Clause. In exchange you take on hosting, backups and updates yourself.
Browse everything in Document Processing & PDF Tools.