Most photo jobs are small: a HEIC that Windows won’t open, a screenshot too big for a form, a web image an app won’t take. The usual fix is a website that uploads your photos to someone else’s server. We think that’s the wrong way round.

Thumbs Photo does the work on your own phone or computer. Pick your photos, tap one button, and save them back. Nothing is uploaded, there’s no account, and it keeps working in airplane mode. Here’s how we prove it.

Why it’s free

Because your phone does the work, each conversion costs us almost nothing. That lets us keep the tools free, with no daily limits and no watermarks.

Add it to your home screen

On iPhone, tap the Share button in Safari, then Add to Home Screen. On Android, open the browser menu and choose Install app or Add to Home screen. It opens like an app, works offline, and on Android it appears in the share menu so you can send photos straight to it.