/ Tool 04
Base64 Encoder / Decoder
Encode and decode Base64 — text, JSON tokens, or files (drag & drop, max 10 MB). UTF-8 & emoji safe, URL-safe mode, Data URI output. 100% in your browser, zero uploads.
Drop file to encode
0 chars
100% local processing — files and text never leave this browser tab. No uploads, no API calls. Max file size: 10 MB.
How It Works
01
Paste or Drop a File
Type or paste text (emojis and accents handled correctly), or drop an image, PDF, audio or text file up to 10 MB.
02
Convert Live
Conversion updates as you type. On decode, the MIME type is detected from Data URIs or magic bytes — images, PDF, ZIP and more.
03
Copy or Download
Copy the result or download it as a file — decoded binaries come back with the correct extension. Nothing is ever sent to a server.