Why "in your browser" matters
Most free online tools upload your files to a server. You're trusting a stranger with your photos, contracts, voice memos, and data. OpenConvert doesn't work that way. Every tool here uses modern browser technology (Canvas, Web Audio and WebAssembly) to process your files locally - the work happens on your computer, and nothing is transmitted, stored, or seen by anyone. It's faster too, because there's no upload or download round-trip.
Free, with no catch
No account, no email, no watermarks, no per-day limits. The tools are supported by unobtrusive ads so they can stay free for everyone.
FAQ
Do these tools upload my files?
- No - every tool processes files locally in your browser using the Canvas API, Web Audio API, or WebAssembly. Nothing is ever transmitted to a server.
Do they work on mobile and iPad?
- Yes - all tools run on any modern browser, including Safari on iPhone and iPad and Chrome on Android.
Is there a file size limit?
- No artificial limit. The only constraint is your device’s available memory.
Are the tools really free?
- Yes, completely. No account, no watermarks, no per-day limits. The site is supported by unobtrusive advertising.
Do they work without an internet connection?
- Once the page is loaded, most tools run offline because all processing happens on your device.
How is this different from Smallpdf, iLovePDF or Adobe?
- Those services upload your files to their servers before processing. OpenConvert does everything in your browser - your files never leave your device.