All Labs

Paste raw JSON to instantly format, validate, or minify it. Includes syntax highlighting, inline error detection with line numbers, and one-click copy. Perfect for debugging API responses or config files.

Instantly encode any text to Base64 or decode Base64 strings back to plain text. Handles full UTF-8 character sets including emojis and international characters. Useful for embedding data in URLs, emails, or API payloads.

Encode or decode URLs and query strings. Supports both component and full URI modes.

Generate cryptographically random UUID v4 identifiers — one at a time or in bulk. Each UUID is unique across space and time, making them perfect for database primary keys, session tokens, or correlation IDs.

Convert colors between HEX, RGB, and HSL formats with a live preview.

Generate placeholder text by paragraphs, sentences, or word count.

Convert between Unix timestamps and human-readable dates. Supports seconds and milliseconds.

Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text using the Web Crypto API.

Write and test regular expressions with real-time match highlighting, captured group inspection, and a library of common pattern presets. Supports all JavaScript regex flags including global, case-insensitive, and multiline.

Paste two versions of text to instantly see additions, deletions, and modifications highlighted side by side. Switch between line-level and word-level diff modes. Great for reviewing code changes, config updates, or document revisions.

A split-pane Markdown editor with live preview. Write GitHub Flavored Markdown on the left and see it rendered in real time on the right. Supports tables, task lists, strikethrough, and auto-linking.

Decode JSON Web Tokens to inspect header, payload, and expiration. No data sent to any server.

Convert between px, rem, em, pt, vw, and vh with configurable base font size and viewport.

Generate QR codes from text or URLs with adjustable size and error correction. Download as PNG.

Generate TypeScript interfaces from JSON data. Handles nested objects and arrays.

Parse and explain cron expressions in human-readable format with preset examples.

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

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

Format and beautify SQL queries with customizable indentation.

Common regex patterns with descriptions, examples, and one-click copy.

Optimize and minify SVG markup — remove metadata, comments, and whitespace.

Convert images to Base64 data URIs for embedding in HTML or CSS.

Generate placeholder images with custom dimensions, colors, and text.

Paste a cURL command or raw API response to see formatted, highlighted output.

Generate strong, customizable passwords with length, character set, and strength indicator.

Create beautiful CSS gradients with a visual editor — linear, radial, and conic.

Encode and decode HTML entities — convert special characters for safe HTML embedding.

Build markdown tables visually with a spreadsheet-like editor.

Test your typing speed and accuracy with random passages. Track WPM and error rate.

Test your memory by matching pairs of cards. Track your moves and best time.

Can you identify the correct color from its hex code? Test your color intuition!

Click on any value in a JSON tree to get its path. Supports dot and bracket notation.

Calculate and convert aspect ratios. Find dimensions, resize proportionally.

Count characters, words, sentences, lines, and paragraphs in any text.

Calculate Unix file permissions — toggle checkboxes or type the octal/symbolic value.

Convert multiple Unix timestamps at once. Paste a list and get human-readable dates.

Generate CSS grid/flexbox placeholder layouts for quick prototyping.

Test your reaction time — click as fast as you can when the screen turns green!

The classic Snake game — eat food, grow longer, don't hit yourself!

The addictive number puzzle — slide tiles to combine them and reach 2048!

Guess the 5-letter word in 6 tries — letters turn green, yellow, or gray!

Convert between YAML and JSON formats with syntax highlighting and error detection.

Parse CSV data into JSON arrays or objects with delimiter and header options.

Generate JSON Schema from a JSON sample. Supports nested objects, arrays, and all data types.

Convert text to URL-friendly slugs with separator, case, and length options.

Visual CSS box-shadow builder with layers, presets, and live preview.

Pick a base color and instantly generate harmonious palettes using color theory — complementary, analogous, triadic, tetradic, and split-complementary schemes. Export as HEX, RGB, or HSL for direct use in CSS.

Analyze text for word frequency, count, and percentage with CSV export.

Convert text to binary (ASCII) and binary back to text, with spaced and continuous formats.

Classic Minesweeper game with Easy, Medium, and Hard difficulty levels.

Generate and play Sudoku puzzles with Easy, Medium, and Hard difficulty levels.

Compare two JSON objects side-by-side, see added/removed/changed keys, and merge them.

A multi-mode percentage calculator covering all common scenarios: percentage of a number, percentage change between values, percentage difference, and adding/subtracting percentages. Instant results as you type.

Convert between 100+ measurement units across 7 categories: length, weight, area, volume, speed, temperature, and digital storage. Results update instantly as you type. Handles metric, imperial, and digital units.

A responsive calculator supporting basic arithmetic, scientific functions (sin, cos, tan, log, sqrt, power), parentheses, and a running history of past calculations. Keyboard-friendly with instant evaluation.