Tools that work.No login. No fluff.
A growing collection of free, fast, client-side tools built by Zinc Online Solutions. Everything runs in your browser — nothing is sent to a server.
- 22Tools
- 100%In-browser
- 0Data collected
Developer Tools
Core dev utilities, the ones we actually use ourselves.
Text Formatter
Convert text between Sentence case, Title Case, camelCase, UPPERCASE and more.
JSON Formatter
Format and pretty-print JSON with configurable indentation and syntax validation.
CSS Prettifier
Format CSS, LESS, or SCSS with Prettier. The inverse of minifying: prettify to read.
JS Prettifier
Format JavaScript, TypeScript, JSX, or TSX with Prettier, with the options that matter.
URL Encoder
Encode and decode URLs and query-string values, with both encodeURIComponent and encodeURI.
JWT Decoder
Decode a JSON Web Token to read its header, payload, and expiry, or sign a new one.
JSON Stringifier
Convert a JSON object into a compact escaped string ready for code or APIs.
JSON Parser
Parse and validate a JSON string. See the type and structure of the result.
CSS Minifier
Strip comments and whitespace from CSS to reduce file size for production.
JS Minifier
Minify JavaScript by removing comments and collapsing whitespace.
Less to CSS
Compile Less stylesheets to CSS with full support for variables, mixins, nesting.
Image to WebP
Convert any image to WebP format in batch for faster web performance.
Image to Format
Convert any image to WebP, PNG, JPEG or AVIF in batch, right in your browser.
Image to Text
Extract text from screenshots, photos and scans with OCR in 10 languages.
Password Generator
Generate strong random passwords with cryptographic randomness and an entropy readout.
UUID Generator
Generate UUID v4 or time-ordered v7 identifiers, singly or in batches of up to 100.
Color Picker
Pick a color and copy it as HEX, RGB, RGBA, HSL, or HSLA, with a WCAG contrast check.
Gradient Generator
Build a CSS linear or radial gradient visually and copy the code it produces.
JS Playground
Write and run JavaScript in a sandboxed frame, then share it as a link.
HTML Playground
HTML, CSS or Less, and JavaScript with a live preview, shareable by link.
Python Playground
Run real Python 3 in your browser on its own thread, then share it as a link.
SEO Tools
Understand how a page performs, ranks, and reads.
SEO Audit
Check any page against Google PageSpeed for performance, accessibility, best practices, and SEO.