Online Tools
Free and practical online tools collection
Hot Picks
(9)My Favorites
Favorite tools for quick access
Developer Tools
(23)JSON Formatter
Online JSON formatting, beautifying and minifying tool
Base64 Encoder/Decoder
Convert text to/from Base64
UUID Generator
Generate UUID v4 in batches
Timestamp Converter
Convert between Unix timestamp and datetime
URL Encoder/Decoder
URL encoding and decoding tool
Hash Generator
Generate SHA hash values
Regex Tester
Real-time regular expression testing
JWT Parser
Parse and validate JWT tokens
Code Formatter
Format JS/HTML/CSS/JSON code
Cron Expression Generator
Generate cron expressions visually
Image Base64 Converter
Convert images to and from Base64
CHMOD Calculator
Calculate Unix/Linux file permissions
JSON/CSV Converter
Convert between JSON and CSV formats
YAML/JSON Converter
Convert between YAML and JSON formats
HTTP Status Codes
Complete HTTP status code reference
Browser Information
View your browser and device information
SQL Formatter
Format and beautify SQL queries
MIME Types Reference
File extension and MIME type reference
Number Base Converter
Convert between binary, octal, decimal and hexadecimal
Slug Generator
Generate URL-friendly slug strings
Page Title
Page Description
Escape/Unescape Tool
Escape HTML, URL, JSON strings
Doc to Markdown
Convert DOCX, PDF, HTML, TXT, CSV to Markdown format
Productivity
(23)Color Converter
Convert between RGB/HEX/HSL colors
Text Counter
Count characters, words, lines, etc.
Password Generator
Generate random passwords
QR Code Generator
Generate QR codes for text or links
Text Diff
Compare differences between two texts
Image Converter
Convert between PNG/JPG/WebP formats
Image Compressor
Compress images online
Markdown Editor
Edit Markdown with live preview
Case Converter
Convert text between different cases
Lorem Ipsum Generator
Generate placeholder text for design
Emoji Picker
Quickly copy emoji symbols
CSS Gradient Generator
Generate CSS gradient backgrounds
Color Palette Generator
Generate harmonious color schemes
Duplicate Remover
Remove duplicate lines from text
Text Sorter
Sort lines of text
Text Reverser
Reverse text order
Find & Replace
Batch find and replace text
ASCII Art Generator
Convert text to ASCII art
Shanghai Gaokao Essay Scoring
AI-powered essay scoring for Shanghai college entrance exam, with detailed analysis and suggestions
PDF Merge & Split
Merge or split PDF files online. No upload needed, processed locally for privacy
Image Resizer & Cropper
Resize and crop images online with custom dimensions and aspect ratio
Remove Image Background
AI-powered background removal. Create transparent PNG images instantly
Video to GIF Converter
Convert video clips to animated GIFs with custom size, FPS and speed
Life & Fun
(19)SBTI Personality Test
A meme-style MBTI parody! 30 absurd questions to discover your quirky personality type
RMB Converter
Convert numbers to Chinese RMB format
Unit Converter
Convert length/weight/temperature units
Speed Test
Test network download/upload speed
World Clock
View time across timezones and convert between them
Tarot Reading
Online tarot card reading for guidance
Daily Horoscope
Check today's horoscope for your zodiac sign
IP Address Lookup
Find your IP address and location info
Mystic Astrology
AI astrologer interprets star codes and explores destiny
BMI Calculator
Calculate Body Mass Index
Loan Calculator
Calculate mortgage payments and interest
Countdown Timer
Set countdown for important moments
Random Generator
Generate random numbers, flip coins, roll dice
Age Calculator
Calculate exact age from birthday
Date Difference Calculator
Calculate days between two dates
Percentage Calculator
Various percentage calculations
Discount Calculator
Calculate discounted prices quickly
IBAN Validator
Validate International Bank Account Numbers
AI Girl
Chat with a cute AI girl, share your mood and stories