Development & programming

Validate and format JavaScript code in a syntax-highlighted editor.

Edit, validate, and format JSON with syntax highlighting. Instantly prettify or minify JSON, validate syntax, and edit with a full-featured code editor.

Edit, validate, and format MDX content with syntax highlighting. Combines Markdown and JSX in one powerful editor.

Edit, validate, and format TOON (Token-Oriented Object Notation) with syntax highlighting. Convert between JSON and TOON, validate syntax, and format token-efficient data for LLMs.

Convert CSS styles to Tailwind CSS utility classes instantly. Transform traditional CSS syntax into modern Tailwind classes. Perfect for migrating projects to Tailwind or learning Tailwind equivalents of CSS properties.

Open multiple URLs in new browser tabs at once. Paste a list of URLs and open them all with a single click.

Generate a customizable HTML5 video tag with common media attributes and source options.

Create beautiful CSS gradients with linear, radial, and conic options. Preview live and copy the generated CSS code.

Create gradient text styles with a live preview and copyable CSS.

Generate Google Calendar links for adding events with title, date, time, location, and description

Generate Outlook calendar event links for easy sharing and quick event creation

Generate shareable links to add events directly to Yahoo Calendar with custom title, description, location, date, and time

Download favicon.ico from any website by entering its URL or domain name

Convert text between plain characters and Unicode formats like code points (U+XXXX), JavaScript escape sequences, HTML entities, hexadecimal, and decimal values

Interactive playground for experimenting with Moment.js date and time API - format, parse, manipulate dates with live output

Test and experiment with date-fns library functions in a live JavaScript playground with instant output

Test and experiment with RxJS reactive programming patterns, observables, and operators in real-time

Generate mailto links for email with recipient, CC, BCC, subject, and body parameters. Create clickable email links for websites and HTML documents.

Convert between Tailwind CSS colors and regular formats like HEX, RGB, HSL. Find the closest Tailwind color match for any color.

Validate Bitcoin addresses and detect address type (Legacy, SegWit, Taproot) and network (Mainnet, Testnet)

Validate Ethereum addresses and check EIP-55 checksum encoding

Generate RTSP URLs for IP cameras and video streaming with authentication, custom paths, and common device presets

Sign and unsign HTTP cookie values using HMAC-SHA256 for secure session management and data integrity verification

Check if two strings are exactly equal using strict comparison