The Base64 Encoder / Decoder is a simple and modern web tool that lets you easily convert text or small files into Base64 format and decode them back. Perfect for developers, designers, and anyone who needs to encode or decode data for web use, this app works right in your browser without uploading anything.

Base64 Encoder / Decoder

Encode text or small files to Base64 and decode Base64 back to text or downloadable files.

No server — client side only

Input (text or Base64)

Auto-detect Base64

Input bytes: 0

Base64 bytes: 0

Detected: —

File (drag & drop or click to choose)

Drop a file here to encode it, or choose a file

No file

Preview will appear here for images

Output

Tips:

• Encoding a file produces a Data URL (data:<mime>;base64,....)
• Decoding a Data URL will recreate the original file if the browser supports it.
• Large files can be slow — keep uploads small (images, text files).

Made for Simple Apps for Everyday Use • Client‑side only

Need a tweak? Ask me.