Your files stay here.
The tools come to you.
Every conversion runs as WebAssembly inside your browser tab. Open DevTools and watch — nothing leaves your machine. Not your photos, not your contracts, not your data. Ever.
Why Bytario
Most "free" file tools upload your files to a server you can't audit. Bytario runs everything inside your browser — verifiably.
Nothing leaves your machine
Every conversion runs as WebAssembly inside your browser tab. Open DevTools → Network and watch — zero outbound requests after the page loads. Your photos, contracts, and data never touch a server. Not even for a millisecond.
Instant results
No upload wait. No download wait. Disk → WASM → result, all in one browser thread.
No signup required
No account. No email. No cookies. No analytics. Open the tool, use it, done.
Works offline
After the page loads, disconnect entirely. The WASM engine lives in your browser.
Need an API? Same engine, server-side.
The same conversion engine powers a production B2B API at api.bytario.com. Bearer-token auth, hard quotas, rate limiting, no surprise bills. One codebase, two runtimes.