Developer Tools

data_object JSON Formatter Free online JSON validator, beautifier (pretty print) and minifier. Runchevron_right lan What Is My IP Address See your public IPv4/IPv6 address, ISP, approximate location and browser details instantly — with one-click copy. Runchevron_right palette Color Converter Convert between HEX, RGB and HSL color codes instantly. Color picker included, free. Convertchevron_right code Number Base Converter Convert numbers between binary, octal, decimal, hexadecimal and any base from 2 to 36 — exact for huge values. Convertchevron_right tag Text ↔ Hex Converter Encode text into hexadecimal and decode hex back into readable text — UTF-8 safe, entirely in your browser. Convertchevron_right tag Hash Generator (SHA-256 / SHA-512) Compute SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text or file — locally with the browser's WebCrypto, nothing uploaded. Generatechevron_right color_lens Color Palette Generator Generate complementary, analogous, triadic and monochromatic palettes from a base color — click any swatch to copy its hex. Generatechevron_right key JWT Decoder Paste a JSON Web Token and read its header and payload as formatted JSON — with expiry times translated to human dates. Fully offline. Runchevron_right invert_colors Complementary Color Finder Find the complementary (opposite) of any color, its RGB inverse, and the readable text color to use on it. Runchevron_right manage_search Regex Tester Write a regular expression, paste test text and see matches highlighted live — with capture groups, flags and clear error messages. Checkchevron_right data_object HTML Entity Encoder / Decoder Convert special characters to HTML entities (&, <, ©) or decode entities back to readable text — both directions, live. Runchevron_right sort_by_alpha JSON Key Sorter Sort every object's keys alphabetically throughout a JSON document, recursively — makes diffs clean and configs easy to scan. Runchevron_right code_blocks JSON Stringify / Unstringify Escape a JSON object into a single quoted string literal for embedding in code, or unescape a stringified JSON string back to readable JSON. Runchevron_right link URL Encode / Decode Percent-encode text for safe use in a URL, or decode an encoded URL back to readable text — both directions, live as you type. Runchevron_right grain ASCII Art Generator (Image to Text) Turn any photo into ASCII art — adjustable width and character density, monochrome text output you can copy or download. Generatechevron_right dialpad Text to Binary Converter Convert text to binary (8-bit UTF-8 bytes) and back — both boxes are live and bidirectional. Convertchevron_right tag Text to ASCII/Unicode Code Converter Convert text to a list of decimal character codes and back — covers the full Unicode range, not just 7-bit ASCII. Convertchevron_right contrast WCAG Contrast Checker Check the contrast ratio of a text/background pair against WCAG AA and AAA — with live preview at normal and large text sizes. Checkchevron_right palette Tint & Shade Scale Generator Turn one brand color into a 50-900 design-system scale — ten tints and shades with hex codes, click to copy. Generatechevron_right schedule Cron Expression Generator Build a crontab schedule from dropdowns — minute, hour, day, month, weekday — with a plain-English readout and common presets. Generatechevron_right code Base64 Encode / Decode Encode text to Base64 or decode Base64 back to text — UTF-8 safe, entirely in your browser. Runchevron_right schedule Unix Timestamp Converter Timestamp to human date and back — seconds and milliseconds auto-detected, shown in your timezone and UTC, with a live current timestamp. Convertchevron_right lan CIDR / Subnet Calculator Enter an IP and CIDR prefix (e.g. 192.168.1.0/24) to get the network address, broadcast address, subnet mask and usable host range. Calculatechevron_right monitor Screen PPI & Size Calculator Pixel density, physical dimensions and dot pitch from diagonal size and resolution — compare monitors before buying. Calculatechevron_right code HTML / XML Formatter & Validator Paste HTML or XML and get it cleanly indented, with well-formedness errors (XML) or unclosed-tag warnings (HTML) flagged. Validatechevron_right compress CSS Minifier / Beautifier Shrink CSS by stripping comments and whitespace, or expand it back into cleanly indented, readable code — both directions, live. Runchevron_right database SQL Formatter Paste a SQL query and get it reformatted with each clause (SELECT, FROM, WHERE, JOIN, GROUP BY…) on its own indented line. Runchevron_right menu_book GitHub README Generator Fill in a form — project name, description, features, install and usage steps, license — and get a ready-to-paste README.md. Generatechevron_right code_blocks HTML/CSS/JS Live Editor A tiny in-browser playground — write HTML, CSS and JS and see the result update live in a sandboxed preview, no account or build step. Runchevron_right terminal Python Editor (Run in Browser) Write and run real Python in your browser — no install, no server, no account. Powered by Pyodide, a full CPython build compiled to WebAssembly. Runchevron_right