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Free browser tools that never upload your files

Converters, generators and calculators that run entirely inside your browser. Nothing is uploaded, nothing is stored, and none of it needs an account.

Most online converters work by uploading your file to a server, processing it there, and giving you a link back. That means a copy of your document, photo or spreadsheet now sits on someone else's machine, governed by a privacy policy you did not read.

Browsers have been able to do this work locally for years. Canvas handles image encoding, the Web Crypto API handles hashing, and modern JavaScript handles the rest. Every tool here uses those APIs directly, which is why they keep working with the network disconnected — and why there is no upload progress bar.