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JSON formatter, regex tester, base64 encoder, UUID generator, password generator and more. No signup. Instant results. Works on mobile.
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JSON formatter, regex tester, base64, UUID generator, password generator and more
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Developer Tools
JSON, regex, base64, UUID, passwords, test data and more
JSON Formatter
Beautify, minify and validate JSON
Regex Tester
Test regular expressions with live match highlighting
Base64 Encoder
Encode and decode Base64 strings
UUID Generator
Generate UUID/GUID v1 and v4 online
Password Generator
Create strong, secure random passwords
Text Diff
Compare two texts and highlight differences
Slug Generator
Convert titles to SEO-friendly URL slugs
UTM Builder
Build campaign URLs with UTM tracking parameters
Random Number
Generate random numbers in any range for testing or sampling
Random Color
Get random hex codes and color palettes
Random Date
Generate random dates in any format for test data
Mock Name Generator
Generate realistic mock names for databases and seed data
Markdown Editor
Write and preview Markdown with real-time rendered HTML output
HTML Encoder / Decoder
Convert special characters to HTML entities and back
URL Encoder / Decoder
Percent-encode URLs and decode encoded strings instantly
Hash Generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from text
CSS Minifier
Compress CSS by removing whitespace and comments
JSON to CSV
Convert a JSON array to CSV with nested key support
Color Code Converter
Convert colors between HEX, RGB and HSL instantly
Text Tools
Clean, format and analyse text instantly
JSON Formatter
Beautify, minify and validate JSON
Word Counter
Count words, characters and reading time
Case Converter
UPPER, lower, Title and Sentence case
Regex Tester
Test regular expressions with live match highlighting
Base64 Encoder
Encode and decode Base64 strings
Lorem Ipsum Generator
Generate placeholder text for mockups
Slug Generator
Convert titles to SEO-friendly URL slugs
Character Counter
Count against Twitter, meta title and ad limits
UTM Builder
Build campaign URLs with UTM tracking parameters
Remove Line Breaks
Strip or replace line breaks from pasted text
Remove Duplicate Lines
Deduplicate and sort lists of text lines
Text Diff
Compare two texts and highlight differences
Text Repeater
Repeat any text a set number of times with a custom separator
Unit Converters
Convert length, weight, temperature and more instantly