Base64 URL Safe Encoder

Encode and decode Base64 URL-safe strings.

ℹī¸ Base64 URL vs Standard Base64

Base64 URL-safe encoding differs from standard Base64:

  • Replaces + with -
  • Replaces / with _
  • Removes padding = characters
  • Safe for use in URLs and JSON without encoding

How to use Base64 URL Encoder/Decoder

  1. 1
    Enter your text — Type or paste regular text or Base64 URL-safe string into the input field.
  2. 2
    Choose action — Click "Encode to Base64 URL" to convert text to URL-safe format, or "Decode from Base64 URL" to convert back to text.
  3. 3
    Copy or Download — Use the Copy button to paste elsewhere, or Download to save as a text file.

The Base64 URL Encoder/Decoder runs entirely in your browser — your data never leaves your machine. Commonly used for JWT tokens and API parameters.