All Tools
Explore our various practical tools to help you with everyday life and work needs.
Calculation Tools
Various math calculations and unit conversion tools
Length Unit Converter
Professional length unit conversion tool supporting 30+ units including metric, imperial, and traditional units
Weight Unit Converter
Professional weight unit converter supporting 16+ weight units with precise calculations
Area Unit Converter
Professional area unit conversion tool supporting 30+ units including metric, imperial, and traditional units
Time Unit Converter
Professional time unit conversion tool supporting units from milliseconds to millennia
Travel Tools
Practical tools for travel
Development Tools
Tools for software development
Crontab Timezone Generator
Professional Crontab timezone generator with cross-timezone scheduling and visual Cron editing
Text Diff Checker
Professional text comparison tool with syntax highlighting for multiple programming languages
JSON Formatter & Validator
Professional JSON processing tool with formatting, validation, error checking, and repair suggestions
Base64 Encoder/Decoder
Free, fast online Base64 encoding and decoding tool
XML Formatter & Validator
Professional online XML processing tool with formatting, validation, and error checking
Random Password Generator
Free online random password generator with customizable length and character types
Database Key Length Designer
Interactive database primary key design tool based on Birthday Paradox collision probability, supporting UUID v7 compact format
Directory Tree Converter
Convert directory tree text to various formats including JSON and Markdown
Mermaid Chart Editor
Visual Mermaid chart editor supporting flowcharts, sequence diagrams, and more
Flowchart Editor
Visual flowchart editor with drag-and-drop, node editing, and Mermaid export
HTTP Request Simulator
Free online HTTP request simulator supporting GET/POST/PUT/DELETE requests, multiple body formats (JSON/Form/XML), authentication, response formatting and search. An online Postman alternative
Daily Life
Practical tools for everyday life
Decision Wheel
Random selection tool to help you make decisions between multiple options
Decision Analysis Tool
Systematic decision analysis using weighted scoring or AHP analytical hierarchy process
Product Comparison Tool
Professional product comparison tool for feature comparison and multi-platform price comparison
Screen & Keyboard Cleaning Tool
Screen and keyboard cleaning assistant with full black screen and keyboard lock
Online Jiaobei Divination Blocks
Free online Jiaobei (Moon Blocks) divination tool with 3D animation simulating a real temple experience. Press and hold to charge, release to toss. Experience Holy, Laughing, and Negative Blocks results. Full-screen immersive mode and history supported.
Resource Directory
Curated directory of useful websites including development tools, design resources, and learning platforms
Startup Tools
Practical tools for entrepreneurs
AI Tools
Artificial intelligence related tools
Entertainment Tools
Music, video, gaming and other entertainment tools
YouTube KTV Singing Tool
Online KTV singing tool. Paste YouTube links to auto-extract subtitles, display lyrics in KTV style sync. Supports subtitle upload/edit, playlist management, multiple playback modes, scenario saving, data import/export
Scrolling Light Text Tool
Fullscreen scrolling text tool for concerts, events, and live streaming. Supports LED, neon, typing, vertical and horizontal scroll animations
Social Media Tools
Tools for social media management
Social Media Assistant
Social media management tool for post management, data analysis, and content optimization
Social Media Image Tool
Free online social media image processing tool supporting image specifications for 10 major platforms including YouTube, Instagram, Facebook, TikTok, X, Reddit, Threads, Douyin, Xiaohongshu, and Twitch
YouTube Thumbnail Extractor
Free online YouTube thumbnail extractor. Enter a video URL to automatically extract thumbnails in 5 resolutions (120×90 to 1280×720). Supports one-click image copy, thumbnail download, and displays actual file sizes