Which characters are encoded?

Any character outside the unreserved set defined in RFC 3986.

Developer Tools

URL Encoder / Decoder

Encode special characters in URLs so they travel safely through networks.

Encode special characters in URLs so they travel safely through networks.

Everything runs directly in your browser. No signup, no upload, no tracking of your inputs - just a fast, focused utility that respects your time.

Format, prettify, and validate JSON with syntax highlighting.

Validate JSON syntax and quickly locate errors.

Encode text to Base64 or decode Base64 back to plain text.

Generate cryptographically strong UUID v4 identifiers in bulk.