Developer Tools

Search and discover emoji meanings, names, and usage suggestions.

Format, beautify, minify, and validate JSON data instantly in your browser.

Encode text to Base64 or decode Base64 strings instantly in your browser.

Encode and decode URLs and query parameters with support for encodeURIComponent and encodeURI.

Encode and decode HTML entities like & < > instantly in your browser.

Convert numbers between binary, octal, decimal, and hexadecimal bases instantly.

Format, beautify, minify, and validate XML data instantly in your browser.

Format YAML, validate syntax, and convert between YAML and JSON bidirectionally.

Convert JSON arrays to CSV format with table preview and instant file download.

Convert CSV data to JSON format with auto-detection of delimiters and table preview.

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text input.

Decode JWT tokens to inspect header, payload, and signature without verification.

Generate cryptographically secure passwords with customizable length, characters, and strength meter.

Estimate token counts and API costs for GPT-4, Claude, and other AI models.

Generate cryptographically secure UUID v4 identifiers with bulk generation and format options.

Generate QR codes for URLs, text, WiFi credentials, and vCards with custom sizes.

Test regular expressions in real-time with match highlighting and capture group details.

Generate placeholder text by paragraphs, sentences, or words with customizable options.

Compress CSS by removing whitespace and comments with file size reduction stats.

Beautify or minify HTML with configurable indentation and proper tag nesting.

Format SQL queries with proper indentation, uppercase keywords, and syntax highlighting.

Write Markdown with a live side-by-side preview supporting GitHub Flavored Markdown.

Create Markdown tables visually with column alignment controls and easy editing.

Convert Markdown text to a downloadable PDF with live preview and print-friendly styling.

Compare two texts side by side and highlight added, removed, and unchanged lines.

Render HTML and CSS code as a downloadable PNG image in your browser.

Convert Unix timestamps to human-readable dates and vice versa with timezone support.

Build cron expressions visually with human-readable explanations and common presets.

Test HTTP requests directly from your browser with custom headers, body, and response formatting.

Convert curl commands to JavaScript, Python, PHP, or Go code and build curl commands visually.

Look up your IP address and geolocation details including city, country, ISP, and timezone.

Convert text between camelCase, snake_case, kebab-case, PascalCase, and more styles.

Count words, remove duplicates, sort, reverse, shuffle lines, and more text operations.

Searchable reference of common TCP/UDP ports with service names, protocols, and descriptions.

Generate Docker Compose YAML files with service presets for common stacks.

Generate .gitignore files by selecting templates for Node.js, Python, Java, Go, Rust, and more.

Browse and copy ready-to-use HTMX patterns for forms, search, modals, pagination, and more.

Comprehensive guide to ChatGPT prompting techniques, tips, tricks, and best practices.

Collection of 100+ ready-to-use AI prompts for coding, writing, marketing, and more.

Complete reference of Visual Studio Code keyboard shortcuts for Windows, Mac, and Linux.

Generate beautiful, harmonious color palettes with AI based on your project description.

Pick colors and convert between HEX, RGB, and HSL formats with a visual color picker.

Create beautiful linear and radial CSS gradients with live preview and code export.

Generate favicons from text or images in multiple sizes with manifest.json and HTML snippets.

Compress JPG, PNG, and WebP images client-side with quality control and before/after comparison.

Check WCAG contrast ratios between text and background colors for accessibility compliance.

Generate tints and shades of any color for consistent design palettes and UI themes.

Resize images to exact dimensions or social media presets with client-side processing.

Convert images to Base64 data URIs for embedding directly in HTML, CSS, or code.

Minify and optimize SVG files by removing metadata, comments, and unnecessary attributes.

Convert SVG files or code to high-quality PNG images at any size or scale.

Convert images between PNG, JPEG, and WebP formats with adjustable quality.

Design CSS text shadows visually with live preview and instant code export.

Calculate modular type scales for consistent heading hierarchies in your design system.

Build Flexbox layouts visually with direction, alignment, and gap controls plus CSS export.

Design CSS Grid layouts visually with rows, columns, and gap controls plus CSS export.

Design CSS box shadows visually with blur, spread, color controls and layered shadows.

Edit CSS border-radius values for each corner independently with live preview.

Generate pure CSS background patterns like dots, stripes, checkerboards, and more.

Generate consistent spacing scales based on a base unit for design systems.

Convert between px, rem, and em units with customizable root font size.

Preview how your links appear when shared on social media with Open Graph tags.

Convert images between WebP, PNG, and JPG formats directly in your browser.

Convert SVG icons to PNG in multiple sizes (16px to 512px) for favicons, app icons, and more.

Convert between SteamID, SteamID3, SteamID64, and Steam profile URL formats instantly.

Count characters, words, lines, sentences, and UTF-8 byte size of any text.