All tools
47 focused, client-side utilities with clear UX and privacy-minded defaults.
JSON Editor
Edit, format, repair, query, compare, and explore JSON in text, tree, and table modes.
JSON Formatter
Format, minify, and validate JSON in your browser.
JSON Validator
Check whether your JSON is valid and locate errors.
JSON to CSV
Convert a JSON array into CSV for spreadsheets.
CSV to JSON
Turn CSV spreadsheets into JSON arrays.
Base64 Encoder / Decoder
Encode and decode Base64 text or files live — URL-safe, MIME, and data URIs.
Encoder / Decoder
Convert text or files to Base32, Hex, Binary, Decimal (ASCII), Octal, Base58, Base62, Base36, Base85, or Base64 — and back.
URL Encoder / Decoder
Percent-encode and decode URL components.
UUID Generator
Generate one or many UUID v4 identifiers.
JWT Decoder / Generator
Decode or generate JWTs locally — secrets never leave your browser.
Push Notification Tester
Send a test push notification to Android, iOS, or web device tokens through Firebase Cloud Messaging.
Regex Tester
Test regular expressions against sample text.
Timestamp Converter
Convert Unix timestamps to dates and back.
Word Counter
Count words, sentences, paragraphs, and more.
Character Counter
Count characters with and without spaces.
Case Converter
Convert text between common casing styles.
Remove Duplicate Lines
Deduplicate lines while preserving order.
Text Sorter
Sort lines ascending or descending.
Percentage Calculator
Calculate percentages, ratios, and percent change.
Age Calculator
Calculate exact age in years, months, and days.
Date Difference Calculator
Find the span between two dates.
Unit Converter
Convert length, weight, temperature, and more.
Loan Calculator
Estimate monthly payments for a fixed-rate loan.
QR Code Generator
Create QR codes for links, Wi-Fi, contacts, email, SMS, and text — download PNG, SVG, or PDF.
Barcode Generator
Generate thousands of sequential barcodes (Code 128, EAN-13, UPC…) as PNG, SVG, or PDF.
Hash Generator
Hash text or files with MD5, SHA-1, SHA-256, SHA-384, SHA-512, and CRC32 — with HMAC and hash comparison.
Password Generator
Create strong random passwords or memorable passphrases, with a live strength meter and crack-time estimate.
Color Converter & Contrast Checker
Convert colors between HEX, RGB, HSL, HSV, HWB, CMYK, and OKLCH, and check WCAG contrast for accessible text.
CSS Generator
Visually build CSS gradients, layered box shadows, glassmorphism cards, cubic-bezier easing curves, and SVG blobs.
Favicon Generator
Make a favicon from text, emoji, or an image and download favicon.ico, PNG icons, apple-touch-icon, and a manifest.
Pixel Art Maker
Draw pixel art on an 8×8 to 64×64 grid, or turn any photo into pixel art with retro palettes. Export PNG or SVG.
Meta Tag Generator & OG Preview
Write SEO, Open Graph, and X card tags and preview how links look on Google, Facebook, X, LinkedIn, and Slack.
Number Base Converter
Convert numbers of any size between binary, octal, decimal, hexadecimal, and any base from 2 to 36, with two's complement.
Morse Code Translator
Translate text to Morse code and back, then play it as sound or a flashing light at your chosen speed.
JSON to YAML Converter
Convert JSON to clean YAML and YAML back to JSON, with indentation, key sorting, and multi-document support.
Diff Checker
Compare two texts side by side or as a unified diff, with word-level highlights and options to ignore case and spacing.
Lorem Ipsum Generator
Generate lorem ipsum paragraphs, sentences, words, or list items as plain text, HTML, or Markdown.
Fancy Text Generator
Turn text into 30+ copy-paste font styles, glitch (Zalgo) text, ASCII art banners, and kaomoji.
Markdown Editor
Write GitHub-flavored Markdown with a toolbar and live preview, then copy the HTML or download .md and .html files.
SQL Formatter
Format messy SQL into readable queries for PostgreSQL, MySQL, SQL Server, Oracle, BigQuery, and more — or minify it.
cURL Converter
Convert curl commands to JavaScript fetch, axios, Python requests, Go, PHP, Java, C#, and Rust code.
Cron Expression Generator
Build and understand cron schedules: plain-language descriptions, the next 10 run times, presets, and a syntax cheat sheet.
HTTP Status Codes
Search every HTTP status code from 100 to 511 with plain-language explanations, categories, and links to the specs.
.gitignore Generator
Build a .gitignore from templates for languages, frameworks, editors, and operating systems, with duplicates removed.
A/B Test Calculator
Check whether your A/B test result is statistically significant and plan how many visitors a test needs.
Typing Speed Test
Measure your typing speed in words per minute and your accuracy in 15, 30, 60, or 120-second tests, in 11 languages.
Reaction Time & CPS Test
Test your reflexes in milliseconds and measure how many clicks per second you can do in 1 to 60 seconds.