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Popular Tools

Most used tools in the community

Tip Calculator

Calculate tip, total and per-person share with custom tip rate and party size.

Border Radius Generator

Visually generate CSS border-radius with independent corner control and copy code.

Fuel Cost Calculator

Calculate trip fuel cost from distance, consumption and fuel price.

XML Formatter

Beautify XML code with proper indentation

Punctuation Remover

Remove Chinese and English punctuation from text

Pomodoro Timer

Pomodoro technique timer with 25-min focus and 5-min break cycles. Customizable.

Stopwatch

Online stopwatch with start, pause, lap and reset. Millisecond precision.

JWT Decoder

Decode JWT tokens to view header and payload

Why Choose Us

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No download or installation needed, just open your browser

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Data processed locally, never uploaded to servers

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Smart AI tools for more efficient creation

All Tools

Curated online tools, organized by category for easy discovery

Border Radius Generator

Visually generate CSS border-radius with independent corner control and copy code.

Developer Tools

Tip Calculator

Calculate tip, total and per-person share with custom tip rate and party size.

Fuel Cost Calculator

Calculate trip fuel cost from distance, consumption and fuel price.

Calorie Calculator

Calculate daily calorie needs from weight, height, age and activity level.

Countdown Timer

Online countdown timer with custom hours, minutes and seconds, alarm on finish.

Pomodoro Timer

Pomodoro technique timer with 25-min focus and 5-min break cycles. Customizable.

Stopwatch

Online stopwatch with start, pause, lap and reset. Millisecond precision.

Discount Calculator

Calculate discounted price and savings. Supports percentage and amount-off modes in real time.

Currency Converter

Convert between major world currencies with customizable exchange rates.

Format Conversion

Timezone Converter

Convert time between major world timezones and cities in real time.

Developer Tools

Data Size Converter

Convert between KB, MB, GB, TB and more. Supports decimal and binary standards.

Format Conversion

Palindrome Checker

Check if text reads the same forwards and backwards. Ignore spaces and case options.

Text Editing & Processing

View all 102 tools

Border Radius Generator

Visually generate CSS border-radius with independent corner control and copy code.

Developer Tools

Timezone Converter

Convert time between major world timezones and cities in real time.

Developer Tools

MAC Address Generator

Generate random MAC addresses in bulk with custom OUI prefix and format.

Developer Tools

Subnet Calculator

Calculate network address, broadcast, usable hosts and mask from IP and CIDR prefix.

Developer Tools

CSS Box Shadow Generator

Visually generate CSS box-shadow with offset, blur, spread, color and inset. Copy code.

Developer Tools

ROT13 Cipher

ROT13 is a symmetric letter-substitution cipher for simple encoding and decoding.

Developer Tools

Caesar Cipher

Caesar cipher encoder/decoder with custom shift. Classic substitution cipher with brute-force all shifts.

Developer Tools

Number Base Converter

Convert between binary, octal, decimal and hexadecimal. Supports decimals and large integers in real time.

Developer Tools

View all 33 tools

Tip Calculator

Calculate tip, total and per-person share with custom tip rate and party size.

Fuel Cost Calculator

Calculate trip fuel cost from distance, consumption and fuel price.

Calorie Calculator

Calculate daily calorie needs from weight, height, age and activity level.

Countdown Timer

Online countdown timer with custom hours, minutes and seconds, alarm on finish.

Pomodoro Timer

Pomodoro technique timer with 25-min focus and 5-min break cycles. Customizable.

Stopwatch

Online stopwatch with start, pause, lap and reset. Millisecond precision.

Discount Calculator

Calculate discounted price and savings. Supports percentage and amount-off modes in real time.

Dice Roller

Roll multiple dice with custom faces online. Fair random results for games and draws.

View all 16 tools

Currency Converter

Convert between major world currencies with customizable exchange rates.

Format Conversion

Data Size Converter

Convert between KB, MB, GB, TB and more. Supports decimal and binary standards.

Format Conversion

Text to Binary

Convert text to binary code with UTF-8 support. Real-time conversion, perfect for learning encoding and debugging.

Format Conversion

Binary to Text

Decode binary code back to readable text with UTF-8 support. Real-time decoding, the reverse of text to binary.

Format Conversion

Hex to Text

Decode hexadecimal code to readable text with UTF-8 support. Real-time decoding for debugging and analysis.

Format Conversion

Morse Code Converter

Convert text to Morse code and back. Supports letters, numbers and common punctuation with custom separators.

Format Conversion

HTML to Markdown

Convert HTML to Markdown format

Format Conversion

JSON to CSV Converter

Convert JSON array data to CSV format

Format Conversion

View all 17 tools

Palindrome Checker

Check if text reads the same forwards and backwards. Ignore spaces and case options.

Text Editing & Processing

Text to HTML

Convert plain text into HTML paragraphs with automatic escaping of special characters.

Text Editing & Processing

Punctuation Remover

Remove Chinese and English punctuation from text

Text Editing & Processing

Text Sorter

Sort text lines alphabetically, by length, or randomly

Text Editing & Processing

Line Break Remover

Remove line breaks from text, optionally keep paragraph breaks

Text Editing & Processing

Slug Generator

Convert titles to URL-friendly slugs

Text Editing & Processing

Word Frequency Analyzer

Analyze word frequency in text, supports Chinese and English

Text Editing & Processing

Text Reverser

Reverse text by character, word, or line

Text Editing & Processing

View all 14 tools

Barcode Generator

Generate Code128 barcodes online with custom size and color. Live preview and PNG download.

QR Code Reader

Decode QR codes from images or camera locally. Privacy-friendly, no upload to server.

Color Contrast Checker

Check foreground/background contrast against WCAG standards with AA/AAA rating.

Image Resizer

Resize images online with custom dimensions

Favicon Generator

Generate website favicon from text or letters

Image Metadata Viewer

View image dimensions, format, file size and more

Image to Base64

Convert images to Base64 encoded strings

CSS Gradient Generator

Visual CSS gradient generator for linear and radial gradients

View all 12 tools

PDF to Image

Convert PDF pages to PNG images (local processing)

PDF & Office Documents

Image to PDF

Merge multiple images into a PDF file (local processing)

PDF & Office Documents

PDF Text Extractor

Online PDF text extraction tool. Upload a PDF to extract its text content, with support for copying or downloading as a TXT file.

PDF & Office Documents

PDF Rotate Pages

Online PDF page rotation tool, allows rotating a single page or batch rotating all pages, supporting 90°/180°/270° rotation angles.

PDF & Office Documents

QR Code Generator

Quickly generate QR codes, supporting URLs, text, WiFi configurations, etc., with customizable colors and sizes

PDF & Office Documents

PDF Merge

Merge multiple PDF files into one document online, free and watermark-free

PDF & Office Documents

PDF Compression

Compress the size of PDF files online, reducing volume while maintaining quality

PDF & Office Documents

AI Writing Assistant

AI intelligent writing, supports copy generation, article continuation, title creation, and SEO optimization suggestions

Text to Speech

Online text to speech tool, supporting multiple voices and speed adjustments

SEO Content Factory

AI-driven SEO content generation tool, automatically generates optimized articles

Latest Posts

Tips, tutorials and updates

tool-tutorials 2026-09-06

Stop Copying and Pasting: This Is How You Convert Web Pages to Markdown Now

Stop manually copying and pasting web content—it's messy, disorganized, and tiring. Now use a web-to-Markdown tool: just paste a link or click a plugin, and it automatically removes messy styles and outputs a clean, well-structured Markdown document. Headings, code, and links are all handled in one go, making it efficient and effortless—a productivity booster for organizing materials.

#网页转Markdown #Markdown工具 #网页内容提取 Read more

tool-tutorials 2026-09-06

CSV to JSON is so simple, why are people still working overtime every day?

CSV to JSON looks simple, but it actually hides pitfalls like encoding, quotes, and line breaks. When data volume is large, online tools are useless. To avoid overtime, you need to understand the format details first, then choose the right tool or learn some code—don't let a simple conversion become a workplace nightmare.

#CSV转JSON #在线转换工具 #数据处理工具 Read more

tool-tutorials 2026-09-06

HTTP Status Codes Hide Secrets: Even Seasoned Veterans Don't Know Them All

HTTP status codes are not simple number correspondences; 200 might be 'working while sick,' 404 isn't necessarily a website crash, and 429, 451, 508, and even 418 each have hidden logic behind them. Mastering these coded languages can make troubleshooting and communication with developers more efficient, and it's more effective than rote memorization from technical books. These obscure status codes that even seasoned veterans stumble on are worth three minutes of your time to understand.

#HTTP状态码 #404错误 #429限流 Read more

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