All Tools
A growing collection of free, browser-based utilities. Everything runs locally, so your data never leaves your device.
JSON Formatter
Beautify, minify and validate JSON instantly. Paste your data and get clean, readable output in one click.
Base64 Encoder
Encode text to Base64 or decode Base64 back to plain text. A handy utility for developers.
URL Encoder / Decoder
Percent-encode or decode URLs and query parameters quickly and safely in your browser.
Color Picker
Pick colors and convert between HEX, RGB and HSL formats for your design and CSS needs.
Password Generator
Generate strong, random and secure passwords with customizable length and character sets.
Markdown Preview
Write Markdown and see the rendered HTML preview side by side in real time.
UUID Generator
Generate random UUIDs (version 4) in bulk. RFC 4122 compliant, perfect for database keys and unique identifiers.
Hash Generator
Compute SHA-1, SHA-256 and SHA-512 hashes of any text. All done locally in your browser using the Web Crypto API.
Text Case Converter
Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case and kebab-case instantly.
Word Counter
Count characters, words, sentences and paragraphs in real time. Get reading time estimates and keyword density.
QR Code Generator
Create custom QR codes for URLs, text, contacts and more. Download as PNG or SVG instantly.
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates. Supports seconds and milliseconds, any timezone.
Lorem Ipsum Generator
Generate placeholder text in Lorem Ipsum style. Choose paragraph count, sentence length and output as plain text or HTML.
Unit Converter
Convert between length, weight, temperature and data units. Metric to imperial and more, all instant.
JWT Decoder
Decode JWT headers and payloads locally in your browser without sending tokens to a server.
Regex Tester
Test regular expressions against text locally in your browser and inspect every match and capture group.
Text Diff Checker
Compare two blocks of text locally in your browser and review added, removed, and unchanged lines.
HTML Entity Encoder
Encode or decode HTML entities locally in your browser for safer markup and readable text.
CSV to JSON Converter
Convert CSV data to formatted JSON locally in your browser without uploading your files.
JSON to CSV Converter
Convert JSON arrays to CSV locally in your browser without sending data to a server.
YAML to JSON Converter
Convert simple YAML to formatted JSON locally in your browser with private, client-side processing.
JSON to TypeScript Converter
Generate TypeScript types from JSON locally in your browser without sending your data anywhere.
CSS Minifier
Minify CSS locally in your browser and compare the original and compressed character counts.
JavaScript Cleaner
Remove comments and unnecessary whitespace from JavaScript locally with a conservative cleanup utility.
Color Contrast Checker
Check foreground and background color contrast against WCAG AA and AAA accessibility thresholds.
Robots.txt Generator
Generate a robots.txt file with crawler rules, sitemap, and host directives in your browser.