Cost / License
- Free
- Open Source
Application typeApplication types
Platforms
- Online
Google's image compressor, fully in-browser
Most online file tools work the same way: you upload your document, their server processes it, and it is deleted on a promise you cannot verify.
A small number do not. These run entirely in your browser using WebAssembly, so the file never leaves your machine — and most keep working with the network disconnected, which is the only version of that claim a user can check for themselves.
This list collects the ones I have found. Suggestions welcome.
Browser-based editing supports complex layers, masks, and adjustment tools, opens PSD, XCF, Sketch files, and exports in over 40 formats, all client-side for privacy.
Cost / License
- Freemium
- Proprietary
Application typeApplication types
Platforms
- Online
- Software as a Service (SaaS)
+2
A full image editor in a browser tab. Files open from your disk and stay there.
Breeze PDF is a powerful, free PDF editor that works entirely offline in your browser. No uploads, 100% privacy guaranteed.
Cost / License
- Free
- Proprietary
Application typeApplication types
Platforms
- Online
PDF editor that works entirely offline in the browser. Nothing is uploaded.
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.
Cost / License
- Free
- Open Source
Application typeApplication types
Platforms
- Online
- Self-Hosted
PDF toolkit that works fully offline with no sign-up. All processing happens locally in your browser.
Deliberately excluded: self-hosted tools like Stirling PDF. Running software on your own server is a different guarantee from running it in your own browser — both are good, but only one needs no server at all.
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