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All developer focused tools: formatters, validators, debug, optimizers.
47 tools
JSON Formatter
Pretty-print, minify, and validate JSON.
Regex Tester
Test regular expressions in real time.
Live Regex
Test preg_match, preg_match_all, preg_replace, preg_split, preg_grep.
UUID Generator
Generate v4 UUIDs in bulk.
ULID Generator
Sortable unique ID generator.
Query String to JSON
Convert URL parameters to JSON and back.
Fake Data Generator
Generate dummy JSON or CSV records.
Chmod Calculator
Convert file permissions to rwx and octal.
Code Line Counter
Count lines, blanks, and comments.
Keyboard Info Viewer
Inspect keyCode, code, and modifiers.
Slug Generator
Convert text into SEO-friendly slugs.
SVG to React Component
Convert SVGs into reusable React components.
CSS Cursor Viewer
Live preview of all CSS cursor styles.
CSS Specificity Checker
Calculate selector specificity.
Copyright Generator
Footer copyright and license snippets.
QR Code Generator
Generate scannable QR codes.
Data URL Generator
Encode and decode data: URIs.
HTML to JSX
Convert HTML attributes to JSX.
HTML Previewer
Sandboxed live HTML preview.
Semver Calculator
Parse, compare and bump SemVer.
URL Parser
Inspect, clean & rebuild URLs.
HTML Formatter
Beautify HTML code.
CSS Formatter
Beautify and organize CSS.
XML Formatter
Format and beautify XML.
SQL Formatter
Format SQL queries.
JSON Validator
Check if JSON is valid.
XML Validator
Validate XML syntax and structure.
Email Validator
Check if email format is valid.
URL Validator
Validate URLs with strict rules.
Credit Card Validator
Validate cards with Luhn check.
Minify CSS
Remove whitespace and comments.
Minify JavaScript
Strip comments and compress.
JSON Minifier
Compact and validate JSON.
HTML Minifier
Compress HTML.
JavaScript Obfuscator
Obfuscate JS with low, medium, or high presets.
Device Info
Browser, OS, and hardware snapshot.
User-Agent Parser
Parse UA strings.
UID / ULID Decoder
Decode ULID, UUID, and ObjectId.
Responsive Font Checker
Preview font sizes across viewport widths.
JavaScript Formatter
Beautify JavaScript code.
GraphQL Formatter
Format GraphQL queries.
LESS Formatter
Format LESS code.
CSS to SCSS Converter
Convert flat CSS to nested SCSS.
HTML Validator
Check for unclosed and mismatched tags.
CSS Validator
Basic CSS brace and semicolon checks.
Favicon Checker
Preview favicons for any domain.
IP Info
Public IP and geolocation snapshot.