Developer Tools
A toolbox for developers — format JSON, encode Base64 and URLs, generate hashes, UUIDs, passwords and QR codes, all in your browser.
JSON Formatter
Format, indent and beautify messy JSON instantly.
JSON Validator
Check whether your JSON is valid and see the error location.
Base64 Encode
Encode text to a Base64 string.
Base64 Decode
Decode a Base64 string back to plain text.
URL Encode
Percent-encode text so it is safe inside a URL.
URL Decode
Decode a percent-encoded URL string back to text.
HTML Encode
Escape characters so text displays safely as HTML.
HTML Decode
Convert HTML entities back to normal characters.
Hash Generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from text.
UUID Generator
Generate random version 4 UUIDs.
Password Generator
Create strong, random passwords with custom rules.
QR Code Generator
Generate a downloadable QR code for any text or link.
Text Case Converter
Convert text to UPPER, lower, Title and sentence case.
Word Counter
Count words, sentences and reading time in your text.
Character Counter
Count characters with and without spaces in real time.