Formatica

Convert any file. Right on your device. Formatica turns your files into the format you actually need — instantly, privately, and for free. Drop in a file and it suggests what to convert it to, and explains why, or pick any format yourself. Everything happens locally in your browser. There's no server, so your files are never uploaded anywhere — not even to power the app. Conversion uses real, deterministic encoders rather than an AI model, so there's nothing to meter or charge for. It covers the everyday cases: photos, video clips, audio recordings, and documents, converted between the common formats you'd expect for each. Images and video can be resized or cropped before converting, by percentage or exact pixels, with an optional aspect-ratio lock. Audio conversions let you adjust the output bitrate. Word documents, PDFs, and plain text convert between each other too. Drop in several files at once and pick a different output format for each. The interface automatically matches your browser's language. And if you don't need it right now, there's a real off switch in the toolbar — one click to turn it off, one click to turn it back on. No accounts, no uploads, no analytics or tracking. See the in-extension Support & Privacy page for details. Formatica is free to use, full stop — there's an optional "buy me a coffee" link at the bottom of the popup, entirely optional, never required.