JSON, CSS, regex, passwords, UUID, QR codes, SEO audits and 65+ more - all free, fast, and built for everyday web work.
Format, validate and beautify JSON
Beautify and indent SQL queries
Format and validate XML documents
Clean up and indent HTML markup
Format and beautify CSS stylesheets
Beautify and format JavaScript code
Compress CSS to reduce file size
Minify JavaScript to improve page speed
Compress HTML for production
Convert Unix timestamps to dates and back
Encode and decode Base64 strings
Encode and decode URLs & URI components
Encode and decode HTML special characters
Convert Markdown syntax to HTML
Convert between YAML and JSON formats
Convert CSV data to JSON format
Convert Binary, Octal, Decimal, Hex
Convert images to Base64 data URLs
Generate UUIDs / GUIDs in bulk
Generate placeholder lorem ipsum text
Generate strong random passwords
Generate QR codes for any text or URL
Create favicons from text, logos or uploaded images
Generate iOS, Android and PWA icon sizes
Create beautiful CSS gradient backgrounds
Generate harmonious color palettes
Pick colors and convert HEX/RGB/HSL
Check WCAG color contrast ratios
Audit HTML or a page URL for common WCAG issues
Export OG, Twitter, Instagram and app preview sizes
Discover great Google Font combinations
View, edit and optimize SVG markup
Visually design CSS Flexbox layouts
Generate CSS Grid layouts visually
Convert pixels to REM and EM units
Count words, characters, sentences
Convert to camelCase, UPPER, snake_case...
Convert text to URL-friendly slugs
Remove duplicate lines from text
Sort lines of text alphabetically
Flesch-Kincaid readability analysis
Compare and diff two text blocks
Remove HTML tags, keep plain text
Test and debug regular expressions
Decode and inspect JWT tokens
Generate MD5, SHA-1, SHA-256 hashes
Build and explain cron expressions
Detect fonts used on any website
Generate SEO, Open Graph & JSON-LD tags
Preview social cards and metadata from any URL
Extract and validate JSON-LD structured data
Check spelling and grammar with writing stats
Strip tracking parameters from any URL
Calculate and convert image aspect ratios
Convert JSON objects to TypeScript interfaces
Generate CSS box-shadow with live preview
Calculate Unix file permissions visually
Parse any URL into its components
Generate robots.txt files for your site
Test robots.txt rules against a specific URL
Validate XML sitemaps and inspect URL entries
Check HTTP redirects, hops and final URLs
Audit canonical, robots meta and OG URL signals
Audit CSP, HSTS and browser security headers
Find links and check for broken HTTP responses
Audit manifest metadata, icons and install basics
Convert HTML to Markdown instantly
Compress images in-browser, fully private
Convert TOML config files to JSON format
Generate CSS clip-path shapes visually
Escape and unescape JS, HTML, URL and SQL strings
Extract dominant colors from any image instantly
Convert times between any timezones worldwide
Generate JSON Schema from any JSON object
ZipTools is designed for the small tasks that slow real work down: formatting API payloads, checking SEO and accessibility basics, generating favicons and app icons, cleaning URLs, testing regex, and converting text or code snippets without bouncing between ten different websites.
Most tools run entirely in the browser, so pasted code, uploaded images, and text stay on your machine.
The library focuses on practical utilities developers, designers, and marketers actually reuse every week.
Every tool opens instantly with no account wall, no installation, and no need to hand data to another app.
Format messy payloads with JSON Formatter, inspect auth tokens with JWT Decoder, and turn objects into interfaces with JSON to TypeScript.
Build a favicon set from a logo in Favicon Generator, then export mobile-ready sizes in App Icon Generator.
Use Accessibility Scan, Contrast Checker, Meta Generator, and Open Graph Preview before publishing.
Check redirect chains, canonical URLs, sitemaps, robots.txt rules, and broken links from one place.
If you are landing on ZipTools for the first time, these pages do the best job of showing what the site is for and why people keep it bookmarked.