Tools

90 tools, organized by category — search or filter to find the one you need.

Developer Tools

26
JSON Formatter & ValidatorFormat, validate, and minify JSON instantly.
JSON Diff CheckerCompare two JSON documents and see exactly what changed, by structure not text.
.gitignore GeneratorGenerate a .gitignore file for your stack — Node, Python, Java, and more.
Open Source License GeneratorGenerate a LICENSE file for MIT, Apache 2.0, GPL, and more, instantly.
README GeneratorGenerate a well-structured README.md for your project, instantly.
Password GeneratorGenerate strong, random passwords instantly.
Diceware Passphrase GeneratorGenerate secure, memorable passphrases using the diceware method.
Password Strength CheckerCheck how strong your password is, entirely offline, in your browser.
UUID & Hash GeneratorGenerate UUIDs and compute MD5/SHA hashes instantly.
Base64 Encoder / DecoderEncode and decode Base64 text, files, and images instantly.
Regex TesterTest and debug regular expressions with live match highlighting.
URL Encoder & DecoderEncode and decode URLs and query strings instantly.
IP Subnet CalculatorCalculate network address, broadcast, and host range from an IP and CIDR, instantly.
JWT DecoderDecode and inspect JWT tokens — header and payload, instantly.
Cron Expression BuilderBuild and understand cron expressions with a visual editor.
HTML Entity Encoder & DecoderEncode and decode HTML entities instantly.
Timestamp ConverterConvert Unix timestamps to human-readable dates and back, instantly.
Number Base ConverterConvert numbers between binary, octal, decimal, and hexadecimal, instantly.
JSON to TypeScript GeneratorGenerate TypeScript interfaces from JSON instantly.
XML Formatter & ValidatorFormat, validate, and minify XML instantly.
YAML to JSON ConverterConvert between YAML and JSON formats instantly, both directions.
SQL Query FormatterFormat and beautify SQL queries instantly.
Code Minifier & BeautifierMinify or beautify JavaScript, CSS, and HTML instantly.
Text & Code Diff CheckerCompare two texts or code snippets and see the differences instantly.
cURL to Code ConverterConvert cURL commands to JavaScript, Python, and more, instantly.
HTTP Status Code ReferenceLook up HTTP status codes and their meanings instantly.

Text & Writing

13
Word & Character CounterCount words, characters, sentences, and reading time instantly.
Markdown to HTML ConverterConvert Markdown to HTML instantly, with live preview.
HTML to Markdown ConverterConvert HTML to clean Markdown instantly.
Case ConverterConvert text between UPPERCASE, lowercase, Title Case, camelCase, and more.
Lorem Ipsum GeneratorGenerate placeholder Lorem Ipsum text for mockups and designs.
Duplicate Line RemoverRemove duplicate lines from a list or text block instantly.
Text SorterSort lines of text alphabetically, numerically, or by length, instantly.
Slug GeneratorConvert text into clean, URL-friendly slugs instantly.
Text Reverser & Palindrome CheckerReverse text and check if it's a palindrome, instantly.
Line Break & Whitespace CleanerClean up extra spaces, line breaks, and whitespace from text, instantly.
Readability Score AnalyzerCheck the readability of your text with Flesch-Kincaid and other scores.
Text to ASCII Art GeneratorConvert text into ASCII art banners instantly.
Morse Code TranslatorTranslate text to Morse code and back, with audio playback.

Calculators

13
Unit ConverterConvert length, weight, temperature, and more, instantly.
Currency ConverterConvert between currencies instantly.
Image DPI & Dimension CalculatorCalculate print size, pixel dimensions, and DPI/PPI instantly.
Aspect Ratio CalculatorCalculate and convert aspect ratios and dimensions instantly.
Percentage CalculatorCalculate percentages, percentage change, and more, instantly.
BMI CalculatorCalculate Body Mass Index (BMI) instantly.
Age & Date Difference CalculatorCalculate age or the exact time between two dates, instantly.
Invoice GeneratorCreate and download professional invoices as PDF, free.
Tip CalculatorCalculate tips and split the bill instantly.
Sales Tax & VAT CalculatorCalculate sales tax, VAT, or GST on any price, instantly.
Compound Interest CalculatorCalculate how your savings or investments could grow over time.
Loan & EMI CalculatorCalculate loan payments, EMI, and total interest instantly.
Freelance Rate CalculatorCalculate your ideal hourly or project rate based on your goals and expenses.

Color & Design

12
Color Palette Generator & ExtractorGenerate color palettes or extract them from any image.
Color Format ConverterConvert colors between HEX, RGB, HSL, and CMYK instantly.
CSS Gradient GeneratorDesign and export CSS gradients with a live visual editor.
Fluid Typography CalculatorGenerate responsive CSS clamp() font sizes that scale smoothly with viewport width.
SVG Pattern GeneratorDesign seamless, tileable SVG background patterns, free.
Contrast CheckerCheck color contrast against WCAG accessibility standards, instantly.
Favicon GeneratorGenerate favicons in every required size from one image, free.
CSS Box-Shadow GeneratorDesign and export CSS box-shadows with a live visual editor.
CSS Border-Radius & Blob GeneratorDesign rounded corners and organic blob shapes with a visual editor.
CSS Flexbox & Grid PlaygroundVisually build and understand CSS Flexbox and Grid layouts, free.
Font Pairing PreviewerPreview and compare Google Font pairings for headings and body text.
Placeholder Image GeneratorGenerate placeholder images with custom dimensions, colors, and text.

Image Tools

12
Image CompressorCompress JPG, PNG, and WebP images without losing quality, free.
Image Resizer & CropperResize and crop images to exact dimensions, free.
Image Format ConverterConvert images between PNG, JPG, WebP, and AVIF, free.
EXIF Data Viewer & RemoverView and remove hidden metadata (including GPS location) from photos, free.
Watermark AdderAdd a text or image watermark to your photos, free.
Meme GeneratorCreate memes with custom text, free, no watermark, no signup.
Background RemoverRemove image backgrounds automatically, free, no upload required.
Screenshot Annotator & EditorAnnotate screenshots with arrows, text, shapes, and blur, free.
Image Rotator & FlipperRotate and flip images instantly, free.
SVG to PNG ConverterConvert SVG files to PNG, JPG, or WebP instantly.
GIF MakerCreate animated GIFs from a series of images, free.
Collage MakerCombine multiple photos into one collage layout, free.

Data & Files

7
CSV to JSON ConverterConvert between CSV and JSON formats instantly, both directions.
CSV to Excel ConverterConvert CSV files to genuine Excel (.xlsx) spreadsheets, free.
CSV & JSON Data MergerCombine multiple CSV or JSON files into one dataset, free.
CSV Viewer & CleanerView, edit, and clean messy CSV data in a spreadsheet-like grid.
File Hash CheckerVerify a file's integrity by checking its hash against an expected value.
File Type DetectorDetect a file's true type by its content, not just its extension.
Random Data GeneratorGenerate realistic fake data for testing — names, emails, addresses, and more.

SEO & Marketing

7
Meta Tag & Open Graph PreviewerPreview how your page looks when shared on social media and search.
UTM Link BuilderBuild trackable campaign URLs with UTM parameters, instantly.
QR Code GeneratorGenerate QR codes for URLs, text, Wi-Fi, and more, instantly.
Barcode GeneratorGenerate barcodes in multiple formats — Code 128, EAN, UPC, and more.
Robots.txt & Sitemap GeneratorGenerate robots.txt and XML sitemap files for your website, free.
Social Media Post PreviewerPreview and check character limits for posts across social platforms.
Business Name GeneratorGenerate creative business and brand name ideas instantly.