Encoding security tools
Base64, URL encoding, JWT decode, and UUIDs. Duplicates of the developer tools point at the main pages.
Digest helpers and encoding utilities for inspection—not encryption of secrets at rest.
More in this category: JWT Decoder
UUID Generator
Generate RFC 4122 version 4 UUIDs with crypto.getRandomValues.
Encoding
JWT Decoder
Decode a JWT header and payload. Decoding does not verify the signature.
Encoding
Base64 Encoder
Encode UTF-8 text to Base64 locally.
Encoding
Base64 Decoder
Decode Base64 to UTF-8 text locally.
Encoding
URL Encoder
Percent-encode text with encodeURIComponent.
Encoding
URL Decoder
Decode percent-encoded URLs locally.
Encoding
Related guides
- JSON Formatting and Validation: Complete Guide
- JSON vs JSON5: What's the Difference?
- Base64 Encoding Explained