All tools

JSON Diff & Compare

Compare two JSON documents structurally — added, removed, and changed values with exact paths, ignoring key order.

JSON Formatter

Format and beautify JSON instantly with syntax highlighting.

JSON to TypeScript & Zod

Generate TypeScript interfaces, type aliases or a Zod schema from sample JSON. Merges array items and marks missing keys optional.

JSON Validator

Validate JSON and get detailed error messages.

YAML ↔ JSON

Convert between YAML and JSON formats seamlessly.

CSV ↔ JSON ↔ SQL

Transform data between CSV, JSON, and SQL Insert formats.

SQL Formatter

Beautify and format your SQL queries for better readability.

Base64 Encode / Decode

Encode text to Base64 or decode Base64 to plain text.

URL Encode / Decode

Encode or decode URL components for safe transmission.

HTML Viewer

Preview and render HTML in a live sandbox.

HTML Minifier

Strip whitespace and comments from HTML to reduce file size.

HTTP Status Checker

Check HTTP status codes and response headers for multiple URLs in bulk.

Locale Converter

Convert locale codes between BCP 47 (en-US), POSIX (en_US.UTF-8), ICU, Android and Accept-Language, with live previews of numbers, dates and plurals.

JWT Decoder

Decode and inspect JWT tokens — header, payload, and signature.

Hash Generator

Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes locally in your browser.

Bcrypt Tester

Generate and verify Bcrypt password hashes securely.

UUID/ULID Generator

Generate bulk UUIDs (v4) and ULIDs for your applications.

Password Generator

Generate strong random passwords with crypto.getRandomValues. Pick the length and character sets and see the entropy. Nothing leaves your browser.

Security Headers Generator

Pick your HSTS, CSP, framing and referrer settings and get ready-to-paste config for Next.js, nginx, Apache, Express, Vercel or Netlify.

Regex Tester

Test regular expressions against strings with live match highlighting.

CSS Unit Converter

Convert between PX, REM, and EM units with a configurable base font size.

Color Palette & Contrast

Explore color formats and check WCAG contrast accessibility.

SVG Optimizer

Clean up and minify SVG code to reduce file size.

Case Converter

Convert text between camelCase, snake_case, kebab-case, PascalCase, Title Case, and URL slugs.

Diff Checker

Compare two text snippets to find deletions and additions.

Crontab Explainer

Understand cron expressions in plain, human-readable English.

Markdown Previewer

Write and preview GitHub Flavored Markdown in real-time.

Text List Converter

Easily convert lists between formats like comma to newline, newline to comma, space to newline, and more.

DNS Lookup

Query DNS records (A, MX, TXT, etc.) for any domain.

Whois Lookup

Retrieve domain registration and ownership information.