Filestay

What it does

Convert HEIC, compress images to an exact KB target, make passport/visa photos, merge PDFs and more — all processed on your device via WebAssembly. No signup, no limits, works offline.

Convert, compress, resize and edit images and PDFs entirely in your browser. No upload, no limits, no signup. Works offline.

Converted, compressed, edited — on your device. Never uploaded. Convert, compress, resize and crop photos without uploading them. Every tool here is a WebAssembly build of a real codec — MozJPEG, libwebp, libavif, libheif, OxiPNG, pdf-lib, pdf.js — running inside your browser tab. There is no upload step, no processing queue and no server bill. Our cost for your thousandth conversion is identical to our cost for your first: nothing. Ads on the page pay for the domain and the development. They sit in the margins and after the content, never next to a download button. The advertising code and your file never meet, because your file is never transmitted anywhere for anything to meet it. Open…from filestay.app

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