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
- Enter plain text.
- Click Encode.
- 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.