Base64 Decoder
Convert Base64-encoded text back to its original content. Everything happens in your browser — nothing is sent to a server.
Pourquoi utiliser cet outil ?
This Base64 decoder instantly reveals the original content of an encoded string, with nothing to install. Handy for debugging an API, reading a token or checking the content of an encoded file, it runs entirely client-side: your data never leaves your browser, making it safe to use with confidential information.
Why it's free
A discreet ad banner covers hosting costs — that's the whole business model. No account to create, no usage limit, no paid tier unlocking the real result. Calculations run in your browser, so your numbers, dates and text never leave your device.
How our tools work