All Tools
Curated online tools, organized by category for easy discovery
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Online Calculator
A multifunctional online calculator supporting basic operations, scientific calculations, and percentage calculations, with a clean and clear interface.
Text Replacement Tool
Online batch text replacement tool, supporting normal replacement and regular expression replacement, with advanced options such as case sensitivity and whole word matching.
Hash Generator
An online hash value generation tool that supports algorithms such as MD5, SHA1, SHA256, SHA512, and can generate hash values for strings or files.
JS Formatter & Minifier
Online JavaScript formatting and minification tool, supports ES6+ syntax, one-click beautify/minify JS code, can detect syntax errors.
Image Rotate & Flip
Online image rotation and flipping tool, supporting 90°/180°/270° rotation and horizontal/vertical mirror flip, with real-time preview.
Lorem Ipsum Generator
Online Lorem Ipsum placeholder text generator, supports custom paragraph count, word count, and sentence count, suitable for design drafts and layout placeholders.
Markdown Editor
Online Markdown editor with real-time preview, supports syntax highlighting, tables, code blocks, etc., and one-click export to HTML/MD format.
English Case Converter
Online English case converter tool, supporting multiple conversion modes such as uppercase, lowercase, capitalize, camelCase, snake_case, and more.
CSS Formatter & Minifier
Online CSS formatting and minification tool. One-click beautify/minify CSS code, supporting custom indentation, property sorting, and more.
HTML Entity Encoder/Decoder
Online HTML entity encoding/decoding tool, supports escaping and unescaping of all HTML special characters to prevent XSS attacks.
Random Number Generator
Online random number generation tool, supports generating integers or decimals within a specified range, and can batch generate non-repeating random number sequences.
PDF Rotate Pages
Online PDF page rotation tool, allows rotating a single page or batch rotating all pages, supporting 90°/180°/270° rotation angles.
Regex Tester
Online regex testing tool supporting real-time matching, highlighting, group extraction, and replacement testing. Supports PCRE/JavaScript syntax.
Image Cropper Tool
Online image cropping tool, supports free cropping, fixed ratio cropping (1:1/4:3/16:9), real-time preview, and one-click download of the cropped result.
Text Counter - Free Online Text Statistics Tool
An online text counting tool that supports real-time statistics for Chinese and English, character count, word count, line count, and paragraph count. It is completely free and requires no registration.
QR Code Generator
Quickly generate QR codes, supporting URLs, text, WiFi configurations, etc., with customizable colors and sizes
Image Compression
Online image compression tool, supports JPG, PNG, WebP formats, intelligent compression maintains clarity
AI Writing Assistant
AI intelligent writing, supports copy generation, article continuation, title creation, and SEO optimization suggestions
PDF Merge
Merge multiple PDF files into one document online, free and watermark-free
PDF Compression
Compress the size of PDF files online, reducing volume while maintaining quality
JSON Formatter
Online JSON formatting, validation, and compression tool, supporting syntax highlighting and tree view
Base64 Encoding and Decoding
Base64 encoding and decoding tool, supporting strings and files
Color Picker
Online color picker, supports conversion between HEX, RGB, HSL formats
Image Format Conversion
Online image format conversion, supports mutual conversion between JPG, PNG, WebP, AVIF
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