Base64URL Encode

Encode text to Base64URL (URL-safe Base64) for JWT segments, query parameters, and filename-safe binary representation.

Your generated secrets and hashes are processed locally in your browser whenever possible and are not stored on our servers.

Overview

Encode text to Base64URL (URL-safe Base64) for JWT segments, query parameters, and filename-safe binary representation.

Benefits

  • RFC 4648 URL-safe alphabet
  • No padding by default
  • UTF-8 text support
  • Local encoding

Use Cases

  • JWT header/payload encoding
  • URL query binary data
  • Filename-safe encodings
  • API param encoding

Users Also Use

How to Use

  1. Enter plain text.
  2. Click Encode.
  3. Copy Base64URL result.

FAQ

What is Base64URL?
Base64URL replaces +/ with -_ and often omits padding = so values are safe in URLs.
Is input stored?
No.

About Base64URL Encode

Base64URL encoders are required when working with JWTs and modern APIs. Encode locally instead of risking data exposure on remote encoder sites.

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