Developer Tools

Format, validate, and minify JSON data. Pretty-print or compress JSON instantly in your browser.

Generate SHA-1, SHA-256, and SHA-512 hashes from text. Fast cryptographic hash generation in your browser.

View and inspect localStorage, sessionStorage, and cookies stored by websites in your browser.

Encode text to Base64 or decode Base64 back to readable text. Handles Unicode characters correctly.

Test regular expressions against sample text with live highlighting and match details. Perfect for developers.

Decode JWT tokens to inspect header, payload, and expiration. No signature verification, just quick decoding.

Generate RFC 4122 v4 UUIDs instantly. Options for uppercase and hyphen-free formats, up to 100 at once.

Convert Unix timestamps to readable dates and back. Works with seconds, milliseconds, and ISO date strings.

Encode URLs and text to safe URL format, or decode percent-encoded URLs back to readable text.

Encode special characters as HTML entities or decode entities back to plain text. Essential for XSS-safe output.

Pretty-print minified XML with proper indentation and line breaks. Perfect for inspecting API responses.

Convert images to base64 data URLs for inline use in HTML, CSS, and JSON payloads.

Convert titles and phrases into clean, SEO-friendly URL slugs. Perfect for blog posts and routes.

Write markdown and preview rendered HTML live. Headings, lists, quotes, code blocks, and links supported.

Break any URL into its components — protocol, host, path, query parameters, and more.

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

Format, indent, and beautify SQL queries for MySQL, PostgreSQL, SQLite, and more. All in your browser.

Minify HTML by stripping whitespace and comments. Compress pages up to 40% smaller right in your browser.

Format messy CSS into readable code or minify it for production. Beautify, compress, and validate CSS.

Convert Markdown to clean HTML with live preview. Copy or download the rendered output instantly.

Generate TypeScript interfaces from any JSON object instantly. Perfect for API response typing.

Convert text between Unicode, escaped \u sequences, and HTML entities. Decode or encode instantly.

Encode text to Morse code or decode Morse back to text. Includes a full Morse alphabet reference table.

Convert between Roman numerals and Arabic numbers. Supports values up to 3999 with correct subtractive notation.

Generate secure random strings with configurable length, character sets, and count. Copy results in one click.

Generate random integers, decimals, or coin flips between any range. Uses cryptographically secure randomness.

Parse and explain cron expressions in plain English. Validate schedules and preview next run times.

Calculate network addresses, broadcast addresses, usable hosts, and CIDR ranges for IPv4 subnets.