Developer Tools

Format, validate, and minify JSON

Compare two JSON objects and highlight differences

Generate TypeScript interfaces from JSON

Generate Zod schemas from JSON

Convert JSON arrays to CSV format

Test JSONPath expressions on JSON data

Encode and decode Base64 strings

Percent-encode and decode URLs

Encode and decode HTML entities

Inspect and convert Unicode code points

MD5, SHA-1, SHA-256, SHA-512 and more

Hash and verify bcrypt passwords

Decode and inspect JWT tokens

Sign JWTs with HS256/RS256

Test regular expressions with live matching

Compare two text blocks line by line

Live preview Markdown as HTML

Generate placeholder text

Convert between camelCase, snake_case, kebab-case and more

Count words, characters, lines and reading time

Minify and beautify CSS

Visual CSS gradient builder with linear, radial, and conic support

Visual CSS box-shadow builder with multiple layers and presets

Write CSS and see it applied to sample HTML elements live

Visual CSS border-radius builder with live preview and presets

Pick and convert between HEX, RGB, HSL, HSV

Generate harmonious color palettes

Generate v1, v4, v5, and v7 UUIDs

Parse and explain cron expressions

Convert Unix timestamps to/from human-readable dates

Generate secure passwords with custom length, charset, and strength check

Generate Universally Unique Lexicographically Sortable Identifiers

Convert text to URL-friendly slugs with custom separators

Escape and unescape strings for JSON, JavaScript, HTML, URL, and CSV

Sort, deduplicate, reverse, shuffle, and transform text lines

Convert px to rem, em, pt, vw and more with configurable base font size

Convert between bytes, KB, MB, GB, TB in both SI and binary units

Calculate the difference between two dates in years, months, weeks, and days

Convert times between world timezones using the Intl API

Convert colors between HEX, RGB, HSL, and HSV formats

Format and minify HTML with configurable indentation

Minify and format JSON with size stats

Build cURL commands from URL, method, headers, and body

Validate YAML syntax with detailed error messages and stats

Generate random names, emails, UUIDs, dates, and more

Complete regex reference with live pattern tester

Reference guide for all HTTP status codes with search and category filter

Convert cURL commands to fetch, axios, Python, Go, PHP, and Ruby

Parse and view CSV files as a table or JSON with delimiter detection

Parse and validate .env files with duplicate detection and format conversion

Parse, compare, and check semantic version ranges

Calculate subnet info, host ranges, and split subnets from CIDR notation

Format numbers with Intl.NumberFormat — locale, currency, percent, scientific

Visual CSS flexbox builder with live preview and generated CSS

Generate CORS headers with nginx, Express, and Apache config snippets

Format and minify SQL with keyword uppercasing and dialect detection

Validate JSON data against a JSON Schema Draft-7

Visual CSS grid layout builder with live preview and presets

Generate SVG favicons from text with custom colors and shapes

Build Content-Security-Policy headers with presets and validation

Build git commands from a form — commit, push, branch, and more

Convert HTML to Markdown and Markdown back to HTML

Format, validate, and convert TOML to/from JSON

Searchable reference for 80+ HTTP request and response headers

Auto-detect and format API responses — JSON, XML, HTML, CSV

View, analyze, sanitize, and optimize SVG files

Generate and preview Open Graph and Twitter card meta tags

Browse and explore OpenAPI/Swagger specs with endpoint search

Build and test HTTP requests with headers, body, and auth

Compare two API responses or JSON payloads side by side

Parse URLs into components and build/modify URLs with query params

Convert text to ASCII art with multiple font styles and borders

Convert text to Morse code and decode Morse back to text

Convert between octal, symbolic, and descriptive Unix file permissions

Calculate and convert aspect ratios, scale dimensions, and fit/cover boxes

Parse docker image references into registry, namespace, tag, and digest components

Calculate and compare CSS selector specificity with token breakdown

Visual cubic-bezier animation curve generator with presets and SVG preview

Generate fluid CSS clamp() values for responsive typography and spacing

Generate tints and shades scale from any base color with CSS variable output

Analyze text for word count, readability scores, and word frequency

Convert IPv4 addresses between decimal, hex, binary, octal, and integer formats

Minify HTML by removing comments, collapsing whitespace, and stripping empty attributes

Convert numbers to English words, ordinals, and Roman numerals

Generate Go struct definitions from JSON with proper field names and json tags

Look up DNS records (A, AAAA, MX, TXT, NS, CNAME and more) via DNS-over-HTTPS

Geolocate any IPv4/IPv6 address — country, city, ISP, coordinates, and timezone

Minify JavaScript by removing comments, collapsing whitespace, and stripping console calls

Compress JPEG, PNG, and WebP images in the browser using Canvas with quality and resize controls

Convert images between JPEG, PNG, and WebP formats entirely in the browser

Preview the next N scheduled run times for any cron expression

Generate Python TypedDict, dataclass, or Pydantic models from JSON

Build CSS @keyframes animations with presets, live preview, and generated CSS

Blend two colors with intermediate steps and explore complementary/analogous/triadic relationships

Encode and decode Base32 with Standard, Extended Hex, Crockford, and z-base-32 alphabets

Generate HTML and Markdown tables from CSV, TSV, or pipe-delimited data

View and generate unified diffs with colored added/removed line highlighting

Convert XML to JSON and JSON back to XML with attribute handling

Generate Apache .htpasswd entries with SHA-1, MD5, or plain password hashing

Parse and convert INI/config files to JSON and back, with section browsing

Convert between YAML and JSON

Generate QR codes for URLs and text with custom error correction

Check WCAG 2.1 color contrast ratios for accessibility compliance

Format and minify XML with validation

Format and minify GraphQL queries and mutations

Convert px values to viewport units (vw, vh) for responsive design

Convert between binary, octal, hex, and decimal