🛠️ Category · 30 tools
Free developer & text tools
Format, convert, test and generate code, data and text. Every tool is free, needs no account and runs in your browser, so your files stay on your device.
Most used
🧩 JSON Formatter
Format, validate and minify JSON
🧪 Regex Tester
Test regular expressions live with highlighted matches
🔠 Case Converter
UPPERCASE, lowercase, Title Case and more
🔐 Base64 Encode / Decode
Encode text to Base64 or decode it back
💻 Code to Image
Turn code into a beautiful, shareable image with syntax highlighting, a window frame and a gradient background
🆔 UUID Generator
Generate random UUID v4 identifiers
All 30 developer & text tools
🎨 CSS Gradient Generator
Design a beautiful gradient with unlimited color stops and copy the CSS in one click, or export a PNG
🔢 Color Contrast Checker
Check if your text and background pass WCAG AA and AAA accessibility, with a live ratio and preview
👁️ Color Blindness Simulator
See any image or screenshot the way color-blind people do
🔄 CSV to JSON Converter
Convert a CSV spreadsheet to JSON or JSON back to CSV
🔐 JWT Decoder
Paste a JSON Web Token to read its header and payload instantly, with human-readable expiry dates
🔒 Hash Generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from text
🔗 URL Encoder / Decoder
Encode or decode URL / percent-encoding
🎨 Color Converter
Convert colors between HEX, RGB and HSL, with a picker
📜 Lorem Ipsum Generator
Placeholder text by paragraphs, sentences, words, characters or list items
📝 Markdown to HTML
Write Markdown and get clean HTML with live preview
🔀 Text Diff Checker
Compare two texts and see what changed
🔢 Binary, Hex & Decimal Converter
Convert binary, decimal, hex, octal and any base 2–36 with no size limit, two’s complement, worked steps, and…
🔁 YAML to JSON Converter
Convert YAML to JSON and JSON to YAML in your browser
🗜️ HTML, CSS & JS Minifier
Minify or beautify HTML, CSS and JavaScript in your browser with Terser and CSSO
🧽 Text Cleaner
Remove line breaks, extra spaces, duplicate or empty lines, HTML tags and emojis; sort lines, fix smart…
✨ Fancy Text Generator
Turn text into 27 Unicode styles
📰 XML Formatter & Validator
Format, beautify or minify XML and check it is well-formed
🗄️ SQL Formatter
Format and beautify SQL for MySQL, PostgreSQL, SQL Server, Oracle, SQLite, BigQuery, Snowflake and more
🏷️ Meta Tag & Open Graph Generator
Write SEO title, description, canonical, Open Graph and X card tags with live Google, Facebook, X and…
🤖 Robots.txt Generator & Tester
Create a robots.txt with disallow rules, sitemaps and one-click AI crawler blocking (GPTBot, ClaudeBot…
⏰ Cron Expression Generator
Explain any cron expression in plain English and see the next run times in your time zone
🔐 Chmod Calculator
Convert Linux file permissions between checkboxes, octal (755, 644) and symbolic (rwxr-xr-x)
⏱️ Unix Timestamp Converter
Convert Unix timestamps (seconds, ms, µs, ns
🩺 Email DNS Checker (SPF, DMARC, DKIM)
Check a domain's MX, SPF (syntax, 10-lookup limit, duplicates), DMARC policy, DKIM selectors, MTA-STS…
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