Open-source Smallpdf alternatives

Stirling PDF is an open-source PDF editing platform that can run as a desktop app, in the browser, or on servers you control through a private API. The project's pitch is that documents can be edited, signed, redacted, converted and automated without being sent to an external service. It is written in Java and distributed with Docker for self-hosting.

It bundles more than 50 PDF tools, including merge, split, sign, redact, convert, OCR and compress. No-code pipelines in the interface let you automate repeated processing, and REST APIs cover nearly all tools for integration into existing systems. The interface is available in over 40 languages. Enterprise options include SSO, auditing and flexible on-premise deployments.

A quick start with Docker serves the app on a local port, and the documentation covers desktop and Kubernetes installs. The repository describes the project as open-core, and GitHub lists its license as 'Other', so confirm which features fall under which terms. It suits individuals and organizations that handle sensitive PDFs and prefer a self-hosted alternative to online PDF tools.

BentoPDF is a client-side PDF toolkit that handles files directly in the browser, so documents are never uploaded to a server. That design makes it attractive for sensitive paperwork, and it can also be self-hosted. You can merge, split and reorganize pages, edit and modify PDFs, convert images and other formats to PDF, convert PDFs to other formats, and secure or optimize files.

Deployment is flexible. The project documents static hosting, local self-hosting, Docker Compose and Podman, a Podman Quadlet setup and a simple self-hosted build mode, along with options for custom branding, disabling specific tools and removing the GitHub star counter. It also covers WebAssembly configuration, air-gapped or offline deployment, a CORS proxy for digital signatures, and version management. A commercial build is mentioned, and the interface is translated into multiple languages.

BentoPDF is licensed under AGPL-3.0, with commercial licensing noted in the documentation, and it is written in JavaScript and TypeScript. It suits individuals, teams and organizations that need a free alternative to online PDF tools without sending files to third parties.

OmniTools is a self-hosted web app that gathers many small utilities in one place, from image and video editing to PDF handling, text formatting and number crunching. It is meant to be a quick, ad-free alternative to the scattered online tools people search for every day.

Its tool categories include image, video and audio tools such as resizing, converting and trimming, PDF tools for splitting, merging and editing, text and list tools such as case converters and shufflers, date and time calculators, math tools, and data tools for JSON, CSV and XML. All files are processed on the client side, so nothing leaves your device, and more tools are added over time.

OmniTools is a React and TypeScript project using Material UI, licensed under MIT. It can be run with Docker or Docker Compose, with a small image that is quick to deploy, and a demo site is available. Translations are managed through Locize, and contributors can add new tools following the project setup instructions.

PDFsam, short for PDF Split And Merge, is a desktop application for working with PDF files. PDFsam Basic, the free and open-source edition developed in this repository, extracts pages, splits, merges, mixes and rotates documents on multiple platforms.

The application is written with JavaFX. Since version 4 it is released as a self-contained application that bundles a jlinked JDK, whereas version 3 required a Java Runtime Environment 8 with JavaFX installed. Documentation, an FAQ, build instructions, contribution guidelines, a translation project and a list of properties and arguments to tweak behavior are all linked from the repository.

Since version 3, PDFsam Basic is licensed under the GNU Affero General Public License, while earlier versions were released under GPLv2. The software runs locally on your computer, so documents do not need to be uploaded to a web service.