AV Tools
ContentsPortfolio ↗
V · Security & Encoding
V · Security & EncodingAV-S03

AV-S03

Base64 Encode / Decode

Encode text or files as Base64 or Base64URL, and decode Base64 back to text or a file.

● Runs on your device; nothing is uploaded

How to use it

  1. Choose Encode or Decode.
  2. Type text in the box, or drop a file onto the drop zone.
  3. When encoding, set URL-safe, Padding and Wrap at 76 as needed.
  4. Copy the output, or use Download .txt / Download bytes.

Limits

File to encode
25 MB
Base64 text file to decode
5 MB
On-page preview
First 200,000 characters
Features
  • Standard Base64 and Base64URL, with or without padding
  • MIME line wrapping at 76 characters
  • Decodes data: URLs and tolerates missing padding and whitespace
  • Detects binary output and guesses the file extension
  • Copies an encoded file as a data: URL

For AI agents: avtools_base64

AV-S03 · Base64 Encode / Decode

Loading the tool…