Developer
Format, validate, and transform technical data directly in the browser.
Categories
Structured data
Format, validate, and compact structured payloads without sending content to the server.
Regular Expressions
Test JavaScript patterns, flags, matches, and captured groups in the browser.
Encoding
Encode and decode technical text, Base64URL, JWT, URLs, and other formats in the browser without sending content to the server.
Hashes
Generate text fingerprints with SHA-256, SHA-1, MD5 and security warnings.
All developer tools
Available tools organized by their main use case.
Structured data
Format, validate, and compact structured payloads without sending content to the server.
Regular Expressions
Test JavaScript patterns, flags, matches, and captured groups in the browser.
Encoding
Encode and decode technical text, Base64URL, JWT, URLs, and other formats in the browser without sending content to the server.
Base64 Converter
Encode and decode Base64 in the browser, with UTF-8 support, Base64URL, and privacy notices.
JWT Decoder
Decode JWT header and payload in the browser, inspect claims, dates, and security warnings without sending the token to the server.
URL Encode Decode
Encode and decode URL components, URIs, and form values in the browser without sending content to the server.
Hashes
Generate text fingerprints with SHA-256, SHA-1, MD5 and security warnings.