Search by keywords, such as text, json, image, etc.
Development
Random Phone Numbers
Development
Generate random 11-digit phone numbers for China Mobile, Unicom, Telecom and China Broadcasting network with bulk quantity and copy features.
Unified Social Credit Code Generator
Development
Generate 18-digit Unified Social Credit Code compliant with China mainland standards, using ISO 7064:1983 MOD 11-2 check algorithm to ensure format correctness and validation. Support batch generation and individual/bulk copy features.
Random Email Generator
Development
Support common email domains (qq/163/126/gmail etc.), customizable prefix rules and length, supports single and bulk copy.
18-Digit ID Card Number Generator
Development
Generate compliant 18-digit Chinese ID card numbers online, supporting filtering by province/city/county, gender, and age group, with randomly generated names and addresses. Uses national standard check algorithm to ensure generated ID numbers are formatted correctly. Support batch generation and individual/bulk copy features.
Base64 Encode/Decode
Development
Convert between text and Base64. Supports UTF-8 characters, URL-safe variant and an option to remove line breaks.
Random Password Generator
Development
Password generator, random string generation, batch generation
URL Encode/Decode
Development
URL online encoding and decoding tool
UUID Generator
Development
Batch generate UUIDs
Timestamp Conversion
Development
Online timestamp conversion tool and get current timestamp
MD5 Online Encryption
Development
MD5 online encryption, length includes 32-bit and 16-bit
JSON Online Converter
Development
Provides real-time editing and preview of JSON data, with features like syntax highlighting, validation, formatting, escaping, unescaping, compression, etc., to improve reading and modification efficiency and accuracy
Regular Expression Tester
Development
Regular expression testing tool, common regular expressions
Unicode to Chinese Conversion
Development
Mutual conversion between Unicode and Chinese
HTTP Status Codes
Development
HTTP status corresponding names and meaning explanations
JWT Parser
Development
Parse and decode JSON Web Tokens (JWT) and display their Header and Payload.
HTML Entity Escape
Development
HTML entity escape tool. Convert plain text to HTML entities or restore entities back to HTML.
JS Format/Compress
Development
JS formatting/compression tool, provides online JS formatting, compression and obfuscation
HTML Format/Compress
Development
HTML and XML formatting and compression tool
CSS Format/Compress
Development
Online CSS formatting and compression
File ↔ Base64
Development
Convert between arbitrary files and Base64 strings. Encode files to Base64 for pasting or transfer, or restore Base64 into downloadable files.
Image ↔ Base64
Development
Convert between images and Base64, supporting image upload, Base64 preview, copy and download.
Crontab Generator & Validator
Development
Generate and validate Linux crontab, Spring cron, and Quartz cron expressions with real-time preview of next execution times.
Education
Unit Conversion
Education
Online weight, length, area, time, angle, speed, temperature, pressure, heat, power and other conversions
Morse Code
Education
Morse code encoding and decoding that supports Chinese
Base Conversion
Education
Online base conversion tool, can convert between 2 to 64 bases
ASCII Table
Education
ASCII table, control codes, standard ASCII characters and non-standard ASCII characters comparison table
Unit Conversion
Education
Online weight, length, area, time, angle, speed, temperature, pressure, heat, power and other conversions
Unit Conversion
Education
Online weight, length, area, time, angle, speed, temperature, pressure, heat, power and other conversions
Unit Conversion
Education
Online weight, length, area, time, angle, speed, temperature, pressure, heat, power and other conversions
Unit Conversion
Education
Online weight, length, area, time, angle, speed, temperature, pressure, heat, power and other conversions
Unit Conversion
Education
Online weight, length, area, time, angle, speed, temperature, pressure, heat, power and other conversions
Unit Conversion
Education
Online weight, length, area, time, angle, speed, temperature, pressure, heat, power and other conversions
Unit Conversion
Education
Online weight, length, area, time, angle, speed, temperature, pressure, heat, power and other conversions
Unit Conversion
Education
Online weight, length, area, time, angle, speed, temperature, pressure, heat, power and other conversions