Stayput

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About Stayput

Stayput is a small collection of file tools that run entirely inside your web browser. Convert an iPhone photo, shrink a PDF, remove the location data from a picture before posting it. The kind of chores that usually send you to a site that uploads your file to a server, makes you wait, and then asks you to sign up or pay after the second one.

How it works

Modern browsers can run real programs. Stayput uses JavaScript libraries and WebAssembly builds of well-known open-source code (libheif for HEIC photos, pdf-lib and pdf.js for PDFs) to do the work on your device. The website is just static files served from a CDN. There is no backend and there is nothing to upload to.

That has three consequences. Your files are private because they never leave your computer or phone. There is no file size cap set by us, because no server handles your files; the main limit is your device’s memory (phones hold less), and a few tools limit frames or output pixels and say so on the page. And after one visit and a short wait it works offline, because the page and its code are cached in your browser (tools that download a model or engine, such as captions, background removal, MP3 export, archives and PDF unlock, need one online run first).

Funding

Stayput is free and has no ads, no accounts and no cross-site tracking, only a self-hosted, cookie-free usage counter described on the privacy page. A static site is cheap to run. If it becomes expensive, the plan is to ask for donations, not to add uploads or ads. If it saved you a subscription and you want to say thanks, the repository has a sponsor link; that money helps cover running costs.

If a tool saved you time, you can support StayPut on Ko-fi.

Open source

The code is published under the MIT license at github.com/keenanlk/stayput. Bug reports, feature requests and pull requests are welcome. If you want to verify the privacy claim, the repository is the place to look.

Credits

Stayput is built on the work below. The complete list, with versions, licenses, links to the exact source and the source offer for the LGPL parts, is on the open-source licenses page.