Developer Tools

JSON Formatter Format, validate and minify JSON with clear error reporting. Developer Tools Base64 Encoder / Decoder Encode text to Base64 or decode Base64 back to text. Developer Tools URL Encoder / Decoder Percent-encode text for URLs or decode an encoded URL. Developer Tools UUID Generator Generate random version-4 UUIDs (GUIDs). Developer Tools Unix Timestamp Converter Convert between Unix timestamps and human-readable dates. Developer Tools Number Base Converter Convert numbers between binary, octal, decimal and hexadecimal. Developer Tools Color Converter Convert colours between HEX, RGB and HSL with a live swatch. Developer Tools CSS Gradient Generator Create CSS linear or radial gradients with a live preview. Developer Tools CSS Minifier Minify CSS by removing comments and unnecessary whitespace. Developer Tools Text to Binary Converter Convert text to binary and binary back to text (UTF-8, 8-bit). Developer Tools Text Diff Checker Compare two blocks of text and highlight added and removed lines. Developer Tools Color Contrast Checker Check the WCAG contrast ratio between two colours for accessible text. Developer Tools IP Subnet Calculator Calculate the network, broadcast, mask, host range and host count from an IP and CIDR. Developer Tools PX to REM Converter Convert between pixels and rem/em for any root font size. Developer Tools Markdown to HTML Converter Convert Markdown to clean HTML with a live preview. Developer Tools Download Time Calculator Estimate how long a file takes to download at a given connection speed. Developer Tools CSS Box Shadow Generator Design a CSS box-shadow with live sliders and copy the code. Developer Tools CSS Border Radius Generator Round each corner with live sliders and copy the border-radius CSS. Developer Tools CSS Cubic-Bezier Generator Craft a CSS easing curve with a live preview and copy the cubic-bezier(). Developer Tools HTML Entity Encoder / Decoder Encode text to HTML entities or decode entities back to text. Developer Tools JWT Decoder Decode a JSON Web Token to read its header and payload. Developer Tools Colour Shades & Tints Generator Generate a tint-to-shade scale from any colour with hex codes. Developer Tools Cron Expression Helper Decode a cron expression and see its next run times. Developer Tools JSON to CSV Converter Convert JSON to CSV and CSV back to JSON, in your browser. Developer Tools Regex Tester Test a regular expression live with match highlighting and capture groups. Developer Tools IBAN Validator Check whether an IBAN is valid using the mod-97 checksum. Developer Tools Credit Card Validator Check a card number with the Luhn algorithm and detect the brand. Developer Tools URL Parser Break a URL into its protocol, host, path and query parameters. Developer Tools Random Color Generator Generate random hex colours for your designs. Developer Tools Text to ASCII Convert text to ASCII codes and ASCII codes back to text. Developer Tools Strip HTML Tags Remove HTML tags and get clean plain text. Developer Tools Base32 Encoder & Decoder Encode text to Base32 or decode Base32 back to text (RFC 4648). Developer Tools HTML Table Generator Generate clean, ready-to-paste HTML table code from data or dimensions. Developer Tools Truth Table Generator Generate a truth table from a boolean logic expression. Developer Tools CSS Triangle Generator Generate pure-CSS triangles with a live preview and copy-ready code. Developer Tools XML Formatter Beautify or minify XML with proper indentation. Developer Tools Tab to Space Converter Convert tabs to spaces or spaces to tabs in your code. Developer Tools CRC32 Checksum Calculator Compute the CRC-32 checksum of text. Developer Tools JSON to TypeScript Generate TypeScript interfaces from a JSON sample. Developer Tools PPI Calculator Work out screen pixel density (PPI) from the resolution and diagonal size. Developer Tools Chmod Calculator Convert Unix file permissions between octal and symbolic form. Developer Tools HTML Minifier Minify HTML by removing comments and collapsing whitespace. Developer Tools HTTP Status Code Lookup Look up the meaning of any HTTP status code. Developer Tools YAML to JSON Converter Convert YAML to JSON and JSON back to YAML, with validation and clear error messages. Developer Tools JSON to XML Converter Convert JSON to XML and XML back to JSON, with attributes, arrays and CDATA handled correctly. Developer Tools CSS Glassmorphism Generator Build a frosted-glass card with backdrop blur, tint and shadow, and copy the CSS. Developer Tools CSS clip-path Generator Clip elements into circles, hexagons, stars, arrows and custom polygons with a live preview. Developer Tools CSS Loader Generator Build a pure-CSS loading spinner or progress animation — no JavaScript, no images. Developer Tools LLM API Cost Calculator Work out what an AI API will cost per request, per month and per year from token counts. Developer Tools BCD & Gray Code Converter Convert between decimal, binary, BCD and Gray code in either direction. Developer Tools Markdown Table Generator Turn CSV, TSV or spreadsheet data into a properly aligned Markdown table. Developer Tools SQL Formatter Beautify or minify SQL with clause indentation and consistent keyword casing. Developer Tools Code Beautifier Format HTML, CSS and JavaScript with proper indentation — language detected automatically. Developer Tools JSON Schema Generator Generate a draft-07 JSON Schema from a sample JSON document, with format detection. Developer Tools Uptime & SLA Calculator See how much downtime an availability target allows, per day, month and year. Developer Tools Video File Size Calculator Work out a video’s file size from its bitrate, or the bitrate needed to hit a size. Developer Tools Screen Resolution Checker What resolution, viewport and pixel ratio this device is actually reporting. Developer Tools