Base64 vers Fichier
Collez du Base64 pour décoder et télécharger le fichier original avec détection automatique du type.
Frequently Asked Questions
How does the tool detect the file type?
It examines magic bytes in the decoded data — for example, %PDF for PDF files, the PNG header for images — and sets the appropriate MIME type automatically.
Can I specify the filename?
Yes. Enter a filename before downloading. The tool also suggests a name based on the detected MIME type.
What if the MIME type is wrong?
You can override it manually. The decoded bytes remain the same regardless — only the file extension and how the OS opens it will change.
Is it safe to decode unknown Base64 strings?
The decoding itself is safe since it runs in your browser. However, be cautious about opening decoded executables or scripts from untrusted sources.