Question 1

Is Offline Toolbox free?

Accepted Answer

Yes. All 65 tools are completely free, with no account, sign-up or paywall.

Question 2

Are my files uploaded to a server?

Accepted Answer

No. Every tool runs 100% inside your browser using WebAssembly and Web Workers. Your files never leave your device and nothing is sent to any server.

Question 3

Does it work offline?

Accepted Answer

Yes. Offline Toolbox is an installable PWA. Most tools work fully offline. A few (OCR, background removal and the ffmpeg-based audio/video tools) download their engine once on first use, then also work offline.

Question 4

What can I do with it?

Accepted Answer

Edit and convert PDFs, convert and edit images, run OCR, remove image backgrounds, convert and trim audio/video, and use developer utilities like a code playground, JSON diff, code formatter, CSS gradient generator and cron builder.