Developer Tools
Explore our collection of free developer tools. All tools run locally in your browser for maximum privacy and speed.
Base64 Encode
Encode text to Base64.
Base64 Decode
Decode Base64 back to text.
URL Encode
Encode text using percent-encoding.
URL Decode
Decode percent-encoded text.
HTML Encode
Encode special characters into HTML entities.
HTML Decode
Decode HTML entities back into text.
JWT Decoder
Decode JWT header and payload (no verification).
Hex → Text
Convert hexadecimal bytes to UTF-8 text.
Text → Hex
Convert UTF-8 text to hexadecimal bytes.
JSON Formatter
Pretty-print JSON with indentation.
JSON Validator
Check whether JSON is valid.
JSON Minifier
Minify JSON by removing whitespace.
JSON → CSV
Convert a JSON array of objects into CSV.
CSV → JSON
Convert CSV into a JSON array of objects.
XML Formatter
Pretty-print XML with indentation.
XML → JSON
Convert XML into JSON.
YAML → JSON
Convert YAML into JSON.
JSON Diff Viewer
Compare two JSON values and list differences.
MD5 Generator
Generate an MD5 hash (hex).
SHA1 Generator
Generate a SHA-1 hash (hex).
SHA256 Generator
Generate a SHA-256 hash (hex).
SHA512 Generator
Generate a SHA-512 hash (hex).