Free Online Tools

Format, validate, and explore JSON with syntax highlighting and tree view.

Convert Unix timestamps to dates and dates to epoch time. Supports seconds and milliseconds.

Encode and decode Base64 for text with URL-safe and standard modes.

Encode or decode full URLs and URL components instantly.

Generate QR codes for URLs, text, Wi-Fi, and more. Customize colors, size, and download as PNG or SVG.

Pick colors and convert between HEX, RGB, HSL, and HSB. Eyedropper support and saved palette.

Write Markdown and preview rendered output in real time. Export as HTML.

Decode JSON Web Tokens to inspect header, payload, signature, and expiration status.

Generate random words for Pictionary and drawing games. 13 categories, 3 difficulty levels, built-in timer.

Generate random words from 8 categories. Perfect for writing, games, and brainstorming.

Random truth questions and dare challenges for parties. 3 difficulty levels with history tracking.

Get creative drawing prompts with subject, style, mood, and constraints. Lock slots for variations.

Generate random UUID v4 identifiers in bulk. 4 output formats with one-click copy.

Generate random strings with custom length and character sets. Cryptographically secure.

Generate MD5 and SHA hashes from text locally in your browser.

Count words, characters, reading time, and keyword density in real time.

Compare two text blocks and highlight line changes instantly.

Convert text into common case styles and naming formats.

Generate strong random passwords with strength indicator. Customizable length and character types.

Resize images to exact dimensions with aspect ratio lock and preset sizes. Export as PNG, JPEG, or WebP.

Compress images to reduce file size. Batch process, adjustable quality, real-time size comparison.

Convert images between PNG, JPG, WebP, and BMP. Batch convert with adjustable quality.

Crop images with preset aspect ratios or freeform selection. Visual grid overlay for composition.

Convert text to Unicode escape sequences, HTML entities, UTF-8 hex, code points, and CSS escapes.

Convert CSV files to JSON and JSON arrays back to CSV locally in your browser.

Calculate percentages, percent of a number, and percentage change instantly.

Convert length, weight, temperature, area, volume, and speed units instantly.

Test regular expressions with live matches, flags, match positions, and capture groups in your browser.

Build cron expressions from presets or fields and copy readable schedules for jobs and automation.