All Tools
78 tools across 5 catalogs
Developer Tools
Formatters, encoders, generators, and web utilities for developers.
Formatters
JSON Formatter & Validator
Format, validate, and beautify JSON data with syntax highlighting.
SQL Formatter
Format and beautify SQL queries with keyword highlighting.
HTML Beautifier
Format HTML and XML with proper indentation.
CSS Formatter
Beautify and minify CSS code.
XML Formatter
Format and beautify XML documents with proper indentation.
Encoders
Base64 Encode/Decode
Encode text to Base64 or decode Base64 back to text instantly.
URL Encode/Decode
Encode or decode URLs and query string parameters.
JWT Decoder
Decode and inspect JSON Web Tokens (JWT) header and payload.
HTML Entity Encode/Decode
Convert special characters to/from HTML entities.
Unicode Escape/Unescape
Convert between Unicode escape sequences and readable text.
Generators
UUID Generator
Generate random UUID v4 identifiers for your applications.
Mermaid Diagram Editor
Create flowcharts, sequence diagrams, ER diagrams, Gantt charts and more with Mermaid syntax.
Regex Tester
Test and debug regular expressions with real-time matching.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text.
Password Generator
Generate strong, secure passwords with custom length and rules.
Cron Expression Builder
Visual builder for cron expressions with presets and human-readable preview.
Fake Data Generator
Generate fake names, emails, addresses, and phone numbers for testing.
Meta Tag Generator
Generate HTML meta tags for SEO, Open Graph, and Twitter Cards.
.gitignore Generator
Generate .gitignore files by selecting languages and frameworks.
README Generator
Generate README.md templates with customizable sections.
Converters
JSON Schema Generator
Generate JSON Schema from sample JSON data with automatic type and format detection.
JSON ↔ YAML Converter
Convert between JSON and YAML formats instantly.
Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa.
Number Base Converter
Convert numbers between Binary, Octal, Decimal, and Hexadecimal.
JSON ↔ CSV Converter
Convert JSON arrays to CSV and CSV back to JSON.
JSON → TypeScript
Generate TypeScript interfaces from JSON data automatically.
Web
HTTP Status Reference
Searchable reference for all HTTP status codes with descriptions.
API Tester
Send HTTP requests (GET, POST, PUT, DELETE) and inspect responses. Like Postman in your browser.
SQL Playground
Run SQL queries in your browser with in-memory SQLite. Practice joins, aggregations, and more.
Robots.txt Generator
Build robots.txt with visual editor for crawl rules and sitemap.
Productivity Tools
Text utilities, timers, converters, and tools to boost your workflow.
Text
Mind Map
Create mind maps from indented text. Visualize ideas and hierarchies instantly.
Word Counter
Count words, characters, sentences, and paragraphs in your text.
Meeting Notes
Structured meeting notes template with agenda, action items, and Markdown export.
Kanban Board
Drag-and-drop Kanban board for task management. Add columns, cards, and organize your workflow.
Lorem Ipsum Generator
Generate placeholder text in paragraphs, sentences, or words.
Markdown Editor
Write and preview Markdown with live rendering side by side.
Text Diff Checker
Compare two texts and highlight the differences line by line.
Case Converter
Convert text between UPPER, lower, Title, camelCase, snake_case, kebab-case, and more.
Remove Duplicate Lines
Remove duplicate lines, trim whitespace, sort alphabetically.
String Escape/Unescape
Escape and unescape strings for JSON, HTML, URL, and SQL.
Text Repeater
Repeat text N times with custom separator.
Notepad
Simple browser-based notepad with auto-save to local storage.
Text to Speech
Read text aloud using browser's Web Speech API with voice selection.
Converters
Design & Media Tools
Color pickers, image tools, and CSS generators for designers.
Color
Color Picker & Converter
Pick colors and convert between HEX, RGB, HSL, and more.
Contrast Checker
Check WCAG color contrast ratio for accessibility compliance (AA/AAA).
Palette Generator
Generate harmonious color palettes with multiple harmony modes.
Tailwind Color Finder
Find the closest Tailwind CSS color for any HEX value.
Color Blindness Simulator
Preview how colors look for different types of color vision deficiency.
Image
Social Media Image
Create images for Instagram, Facebook, Twitter, LinkedIn with gradients and text. Download as PNG.
Image Compressor
Compress PNG, JPEG, and WebP images without losing quality.
Image Resizer
Resize images by dimensions or percentage with aspect ratio lock.
Image to Base64
Convert image files to Base64 data URLs.
Placeholder Image Generator
Generate placeholder images with custom size, color, and text.
Image Format Converter
Convert images between PNG, JPEG, and WebP formats.
CSS
Icon Finder
Search and browse 1500+ Lucide icons. Copy import or JSX code with one click.
CSS Gradient Generator
Create beautiful CSS gradients with a visual editor and copy the code.
Font Pairing
Browse curated Google Font pairings with live preview. Copy CSS import code.
Box Shadow Generator
Create CSS box-shadow with a visual editor. Multiple layers, inset, copy code.
Border Radius Preview
Visual border-radius editor for all corners with CSS output.
Flexbox Playground
Interactive CSS Flexbox layout builder with live preview and code output.
CSS Grid Generator
Visual CSS Grid layout builder with live preview and code output.
Finance Tools
Calculators and planners for loans, budgets, and investments.
Calculators
Loan Calculator
Calculate monthly payments, interest, and amortization schedules.
Compound Interest Calculator
Calculate compound interest with multiple compounding frequencies.
Tip Calculator
Calculate tips and split bills between multiple people.
Discount Calculator
Calculate discounts, final prices, and compare multiple discount levels.
ROI Calculator
Calculate Return on Investment percentage and net gain/loss.
Business Tools
QR generators, invoice makers, and marketing utilities.
Marketing
QR Code Generator
Generate QR codes for URLs, text, Wi-Fi, and more.
UTM Builder
Build UTM-tagged URLs for campaign tracking in Google Analytics.
Hashtag Generator
Generate relevant hashtags for social media posts by topic.
Email Subject Line Tester
Score email subject lines for open rate optimization with 9 criteria.