Data & encoding

Format and validate JSON instantly.

Encode and decode Base64 text privately in the browser.

Decode JWT header and payload claims locally in the browser.

Validate JSON syntax and see exact error messages instantly.

Encode and decode URL percent encoding instantly in the browser.

Convert Unix timestamps to dates and back instantly.

Explain cron expressions in plain English with next run times.

Convert HEX, RGB, HSL, and HSB color formats with live preview instantly.

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes instantly.

Convert CSV rows to a JSON array of objects instantly.

Convert JSON array of objects to CSV instantly.

Escape and unescape HTML entities instantly in the browser.

Convert numbers between binary, octal, decimal, and hex instantly.

Create and sign JWT tokens locally with HS256 in the browser.

Generate TypeScript interfaces and types from JSON instantly.

Convert YAML documents to formatted JSON instantly.

Format SQL queries with readable indentation instantly.

Convert cURL commands to Fetch, Axios, or Node.js instantly.

Parse URL query strings into structured JSON instantly.

Convert CSS to Tailwind utility classes instantly. Figma Inspect supported.

Convert Tailwind utility classes to plain CSS instantly.

Convert images between PNG, WebP, and JPEG locally in the browser.

Hash and verify bcrypt passwords locally in the browser.

Convert TOML configuration files to JSON instantly.

Compile LESS stylesheets to plain CSS instantly.

Compile SCSS and SASS stylesheets to plain CSS instantly.

Beautify and minify HTML instantly in the browser.

Beautify and minify CSS instantly in the browser.

Beautify and minify JavaScript instantly in the browser.

Search Tailwind CSS utility classes with live previews instantly.

Compile LESS and map to Tailwind utility classes instantly.

Compile SCSS/SASS and map to Tailwind utility classes instantly.

Calculate Unix chmod permissions and convert octal to symbolic notation.

Parse URLs into protocol, host, path, query params, and hash.

Test JSONPath expressions against JSON data with live results instantly.

Build cron schedules visually and copy crontab expressions instantly.

Generate JSON Schema from any JSON object instantly.

Validate .env syntax and detect duplicates and risky entries.

Validate OpenAPI 3.x and Swagger 2.0 specs instantly.

Encode images to Base64 data URIs or decode Base64 back to images.

Extract and clean SVG icons from HTML with color and size overrides.

Convert SVG files to PNG, JPEG, or WebP raster images locally.

Convert SVG to PNG, JPEG, or WebP at 1×, 2×, or 3× retina scale.

Compare two timestamps and calculate the difference in days, hours, and seconds.

Convert Markdown to clean HTML with live preview and GFM support.

Generate Zod schemas from TypeScript interfaces. Supports v3, v4, unions, enums.

Generate realistic mock JSON API responses from templates or a JSON example.

Convert docker run commands to docker-compose.yml YAML instantly.

Compare two JSON objects and see added, removed, and changed keys.

Check JWT expiry status with exp, iat, and nbf claim details.

Extract JSON Schemas from OpenAPI 3.x or Swagger 2.0 specs.

Convert JSON to YAML instantly in your browser.

Convert TypeScript interfaces and types to JSON Schema instantly.

Convert JSON Schema to TypeScript types and interfaces instantly.