🛠Dev
Developer tools cover the everyday workflow: format and validate JSON, test regular expressions, decode JWTs, convert formats, generate hashes and inspect data. Built to speed up common tasks without leaving the browser.
136 tools
Pix Decoder
Decode Brazilian Pix BR Code (text starting with 0002...) extracting key, amount, beneficiary, city and identifier.
Icon Finder
Search SVG icons from the Lucide library (1300+ icons) by name. Copy the SVG or component name.
.env Formatter
Formats .env files: sort variables, group by prefix, quote values and remove duplicates.
Unicode Info
Shows details of each character: code point (U+XXXX), official name, category, UTF-8 bytes, HTML/JS escapes.
Cron Generator
Generate cron expressions (5 fields: minute, hour, day, month, weekday) with common presets and natural-language description.
.htaccess Generator
Generate Apache .htaccess snippets: force HTTPS, redirect www, expire cache, GZIP compress, block IPs.
Typographic Scale
Generate a harmonic typographic scale based on a ratio (1.125, 1.25, 1.333, 1.5, 1.618). Output in rem, px and CSS clamp.
Strikethrough Text Generator
Transform any text into strikethrough text using Unicode combining characters. Works on social networks.
Zalgo Text Generator
Generate creepy Zalgo text with overlapping diacritical characters. Control the intensity of the effect.
Text Diff
Compare two texts and see the differences highlighted line by line. Useful for reviewing documents and code.
JSON Formatter
Format, validate and minify JSON online. Paste raw JSON and get a readable, indented version.
Regex Tester
Test regular expressions in real time. See highlighted matches and captured groups.
Cron Expression Editor
Parse and build cron expressions with human-readable descriptions, next execution times and shortcuts for common schedules.
JWT Decoder
Decode and inspect JWT (JSON Web Tokens). View the header, payload and verify expiration. Processed 100% in the browser — the token never leaves your device.
CSS Gradient Generator
Create linear and radial CSS gradients with real-time preview. Adjust colors, positions and angle. Copy the CSS code with one click.
JSON ↔ CSV Converter
Convert data between JSON (array of objects) and CSV bidirectionally. Paste and convert instantly in the browser, no file upload needed.
PX ↔ REM / EM Converter
Convert pixels to REM and EM and vice versa with configurable base. Reference table with the most common CSS sizes. Essential for web.
CSS Box Shadow Generator
Create CSS box shadows with real-time preview. Configure multiple shadow layers, color, blur, spread and inset. Copy the CSS code.
URL Analyzer
Decompose any URL into its components: protocol, host, pathname, query parameters and hash. Inspect query strings individually.
HTML Formatter
Format and indent HTML code for better readability. Ideal for reviewing and debugging HTML quickly.
HTML Escape / Unescape
Escape special HTML characters (<, >, &, ", ') to HTML entities and convert entities back to text.
HTML Validator
Check for syntax and structure errors in HTML code. Identify unclosed tags and common problems.
HTML Tag Remover
Remove all HTML tags from text, leaving only the pure content without markup. Useful for extracting text from HTML.
CSS Formatter
Format and indent CSS code for better readability and maintenance.
JavaScript Formatter
Format and indent JavaScript code for better readability and debugging.
JavaScript Minifier
Minify JavaScript code by removing whitespace and comments to reduce file size in production.
JavaScript Escape / Unescape
Escape JavaScript strings by adding backslashes before special characters and convert back to the original.
JSON Validator
Validate JSON data to check for syntax errors. Detailed error report with line and position of the problem.
JSON Escape / Unescape
Escape strings for use in JSON by adding backslashes and convert JSON strings back to the original text.
XML Formatter
Format and indent XML code for better readability and inspection.
XML Minifier
Minify XML data by removing unnecessary whitespace and line breaks for production.
XML Validator
Validate XML data to check for syntax and structure errors.
XML Escape / Unescape
Escape special XML characters (<, >, &, ", ') to entities and convert XML entities back to text.
YAML Validator
Validate YAML data to check for syntax and indentation errors.
SQL Formatter
Format SQL code for better readability. Supports SELECT, INSERT, UPDATE, DELETE and other commands.
SQL Minifier
Minify SQL code by removing unnecessary whitespace and comments.
HTML Table Generator
Paste CSV, TSV or semicolon-separated data and instantly generate an HTML table with thead, tbody and live preview.
HTML Preview
Write HTML, CSS and JavaScript and see the rendered result in real time. Isolated sandbox — no code is sent to any server.
HTTP Status Codes
Look up all HTTP status codes with names and descriptions. Search by code or keyword. Quick reference for developers.
Unix Permissions Calculator (chmod)
Calculate Unix file permissions visually. Check read, write and execute for owner, group and others to get the octal code (e.g. 755) and symbolic notation (e.g. rwxr-xr-x).
User-Agent Parser
Parse User-Agent strings and identify browser, version, operating system and device type. Perfect for debugging access logs.
Programming Case Converter (camelCase, snake_case)
Convert text between camelCase, PascalCase, snake_case, SCREAMING_SNAKE_CASE, kebab-case, dot.case, Title Case and more with one click. Perfect for renaming variables and API fields.
IPv4 Subnet Calculator
Calculate IPv4 subnets with CIDR notation. Enter an IP address and prefix (e.g. 192.168.1.0/24) to get the network address, broadcast, host range, subnet mask and binary representation.
Markdown Table Generator
Build Markdown tables visually — add rows and columns, edit cells and copy the GFM syntax ready for README, Notion or GitHub. No manual formatting.
Docker Run → Compose
Convert a docker run command to the equivalent docker-compose.yml automatically. Maps ports, volumes, environment variables, networks and restart policies.
SVG Optimizer
Reduce SVG file size by removing metadata, comments, editor attributes (Inkscape, Illustrator) and unnecessary whitespace. Processed in your browser.
CSS Clamp Calculator
Generate CSS clamp() values for fluid typography and spacing. Enter minimum/maximum sizes and viewport widths to get a ready-to-paste clamp() function.
CSV Validator & Viewer
Validate, parse and visualize CSV data in table format. Automatically detects delimiters (comma, semicolon or tab) and highlights formatting errors.
JSON Comparator
Compare two JSON objects and visualize differences side by side: added, removed and changed fields. Supports nested structures. Processed in your browser.
Truth Table
Generate truth tables for Boolean logic expressions. Supports AND, OR, NOT, XOR, NAND and NOR. Auto-detects variables and shows all possible combinations. Processed in the browser.
JSON Flatten / Unflatten
Flatten a nested JSON into dot-notation keys (e.g. user.address.city) and rebuild the reverse path. Useful to export to CSV, generate .env files or compare configs. Everything in your browser.
CSS Border Radius Generator
Create custom rounded shapes with 8 independent controls (4 corners × 2 axes). Live preview and ready-to-copy CSS. Everything in your browser.
Cubic Bezier Generator
Create and visualize cubic-bezier curves for CSS animations. Drag control points, preview the animation and copy the value. Includes presets (ease, ease-in, ease-out). Everything in your browser.
CSS Clip-Path Generator
Create CSS shapes with clip-path: polygons, circles, ellipses and insets. Pick presets (star, hexagon, arrow, chevron) and copy the ready code. Everything in your browser.
CSS Triangle Generator
Create pure CSS triangles using the border trick. Choose direction (up, down, left, right), size and color. Useful for tooltips, arrows and pointers. Everything in your browser.
CSS Glassmorphism Generator
Create frosted-glass effects with backdrop-filter, transparency and borders. Adjust blur, saturation and opacity. Live preview and copy-ready CSS. Everything in your browser.
CSS Grid Generator
Build CSS Grid layouts visually: define rows, columns, gaps and alignment. Live preview and ready-to-copy CSS. Everything in your browser.
CSS Loader Generator
Create pure-CSS spinners and loaders in 8 styles (ring, dots, pulse, bars, etc.). Adjust color, size and speed. No libs, no GIFs. Everything in your browser.
Mesh Gradient Generator
Create modern mesh gradients by combining multiple radial-gradients. Add, remove and drag points to compose vibrant backgrounds Stripe/Linear style. Everything in your browser.
CSS Neumorphism Generator
Create Soft UI (neumorphism) effects with two complementary box-shadows. Adjust base color, distance, blur and type (raised, flat, pressed). Copy ready CSS. Everything in your browser.