Free Online Utilities for Everyone

Generate and validate International Bank Account Numbers (IBAN) for various countries. Supports multiple IBAN formats and validation rules.

Generate Universally Unique Identifiers in multiple versions (v1, v4, v7) and GUID format. Supports bulk generation, validation, and custom formatting.

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text and files. Support for HEX and Base64 output formats with bulk processing capabilities.

Generate QR codes and barcodes with customizable options. Supports multiple formats, sizes, colors, error correction levels, and both PNG/SVG output formats.

AI-powered lottery number generator with statistical analysis. Generate numbers based on frequency, cold numbers, odd-even ratio, and range distribution.

Format, validate, minify and convert JSON data. Features include syntax highlighting, error detection, CSV/XML/YAML conversion, and comprehensive statistics.

Edit and preview Markdown in real-time with split-screen view. Features syntax highlighting, live preview, file upload/download, and export to HTML.

Encode and decode text or files to/from Base64 format. Features include file type detection, format validation, and conversion to hex/binary encoding.

Minify and compress HTML, CSS, JavaScript, JSON, XML, and SVG code to reduce file size and improve website performance.

Encode and decode URLs with multiple encoding types. Supports standard URL encoding, component encoding, form data, and custom character preservation.

Convert between units (length, weight, volume, temperature, speed, area, time, digital storage) and number formats (binary, decimal, hex, fractions, percentages) with real-time results.

Convert images between formats (JPEG↔PNG, SVG→PNG, GIF→JPEG, WebP) with quality control and resize options. Supports batch conversion and maintains image quality.

Compare multiple world time zones simultaneously with interactive drag control. Visualize day/night cycles across cities. Perfect for scheduling international meetings and remote team coordination.

Merge multiple PDF documents and images (JPEG, PNG) into a single PDF file. Features drag-and-drop, file reordering, and instant client-side processing with no upload required.

Convert UNIX timestamps to readable dates and vice versa with timezone support. Features ISO 8601, RFC 2822, batch conversion, and CSV export.

5 powerful date tools: calculate date differences, D-Day countdown, add/subtract dates, convert lunar↔solar calendars, and calculate Korean age (만 나이) with complete privacy.

Decode, validate, and analyze JSON Web Tokens (JWT) with comprehensive security insights. Check token expiration, claims analysis, and security recommendations.

Find your external IP address instantly using multiple reliable services. Shows both public and local IPs with network information. Uses ipify, ifconfig.me, checkip.amazonaws.com, and WebRTC.

Scan QR codes and barcodes using your camera or upload images. Supports multiple formats including QR, UPC, EAN, Code 128, Code 39, and more with real-time detection.

Extract text from images using advanced Optical Character Recognition. Supports 11+ languages including English, Korean, Chinese, Japanese with client-side processing for privacy.

Create custom roulette wheels for team selection, decision making, or random picks. Fully customizable options and smooth animations.

Play the classic ladder game for decision making and fun. Create custom players and prizes, then follow the ladder paths to discover your result.

Detect emotions from facial expressions using AI and WebGPU. Analyzes photos to identify happiness, sadness, anger, fear, surprise, disgust, and neutral emotions with real-time camera support.

Discover your personality type through intuitive image selection. DISC-based psychological test with 12 personality profiles, radar chart visualization, and personalized growth advice.