Hot Tools
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Return on Investment (ROI) Calculator
Free online Return on Investment (ROI) calculator. Enter investment cost and return amount to quickly calculate ROI percentage and net profit, helping evaluate investment performance.
AI Article Rewriting
Free online AI article rewriting tool. Input original text for one-click unique rewriting while preserving meaning and avoiding duplication. Supports Chinese polishing and SEO rewriting.
AI Title Generator
Free online AI title generator. Enter a topic to generate 10 high-click Chinese titles with one click, balancing keywords and appeal, ideal for self-media and SEO.
AI Batch Rewriter
Free online AI batch rewriting tool. Paste multiple articles at once, AI rewrites them individually to preserve meaning and avoid similarity, greatly improving content production efficiency.
Xiaohongshu Copy
Free online Xiaohongshu copy generator. Enter a topic to generate viral recommendation posts in one click: includes title, body, and hashtags. Suitable for bloggers and brand operators.
Product Selling Point Extractor
Free online product selling point extractor tool. Enter product information to instantly generate 5 core selling points and a tagline, highlighting customer benefits and boosting conversion rates.
AI Tools 23
Free
Free
Free
Free
Free
Free
Free
Free
Free
AI Article Rewriting
Free online AI article rewriting tool. Input original text for one-click unique rewriting while preserving meaning and avoiding duplication. Supports Chinese polishing and SEO rewriting.
AI Long Article Summarizer
Free online AI long article summarizer. Extract key points, generate summaries and title suggestions with one click, and quickly grasp the content of long articles.
AI Title Generator
Free online AI title generator. Enter a topic to generate 10 high-click Chinese titles with one click, balancing keywords and appeal, ideal for self-media and SEO.
AI Keyword Expander
Free online AI keyword expansion tool: enter a core word to generate 30 Chinese long-tail keywords in one click, covering question/scenario/regional dimensions, to help with SEO keyword selection.
AI Code Explainer
Free online AI code explainer. Paste code in any programming language, and AI will output a feature overview, step-by-step explanation of core logic, and key point tips. A great helper for learning and debugging.
AI SQL Generator
Free online AI SQL generator, describe query requirements in natural language, AI automatically generates executable MySQL statements with explanations, improving development efficiency.
AI Regex Generator
Free online AI regex generator. Describe matching requirements in natural language, AI generates accurate regex with explanations and matching examples.
AI Weekly Report Generator
Free online AI weekly report generator. Input this week's work content, and AI will automatically organize it into a professional weekly report including completed tasks, data highlights, risks and issues, and next week's plans.
AI Long-form Generator
Free online AI long-form generator. Input keywords to generate 800-1200 word SEO original articles in one click, including title and section structure, suitable for site owners to quickly produce content.
Developer Tools 49
JSON Formatter
Online JSON formatting, minifying, and validating tool, supports multiple languages.
Random Password Generator
Online random password generator with customizable length and character sets for strong, secure passwords.
Binary to Decimal
Free online binary to decimal converter, supports large numbers for accurate results.
Decimal to Binary
Convert decimal to binary quickly, supports integers and decimals, free online tool.
Decimal to Hexadecimal
Convert decimal to hexadecimal, supports integers and decimals, free to use online.
JSON to XML
Convert JSON data to XML format, handles nested objects and arrays, free and fast for developers.
XML to JSON
Convert XML data to JSON format, supports attributes, nested elements and text content.
JSON Formatter
Free online JSON formatter, beautifies JSON with syntax highlighting and indentation.
JSON Minify
Free online JSON minifier, removes extra spaces and newlines to reduce size for faster transfer.
Text Processing 51
Character Counter
Online tool to count characters, Chinese characters, words, lines and bytes with real-time statistics.
Case Converter
Online case converter: ALL CAPS, all lowercase, capitalizing first letters, and title case.
Text to Uppercase
Free online text-to-uppercase tool, converts lowercase to uppercase with one click, supports mixed Chinese and English.
Text Deduplicator
Free online text deduplication tool, removes duplicate lines while keeping the first occurrence.
Text Sorter
Free online text sorter, sorts lines alphabetically or numerically in ascending or descending order.
Text Reversal
Free online text reverser, reverses line order or individual characters with one click.
Capitalize First Letter
Free online capitalize tool, converts the first letter of each word to uppercase with batch support.
Text Statistics
Free online text statistics tool, counts words, characters, paragraphs and lines in real time.
Space Cleaner
Free online whitespace cleaner, removes extra spaces, leading/trailing spaces and empty lines.
Encoding Conversion 12
URL Encode/Decode
Online URL encode/decode tool supporting encodeURIComponent/decodeURIComponent, one-click conversion.
Base64 Encode
Free online Base64 encoder supporting Chinese characters, converts text to Base64 right in your browser.
Hex Encoding/Decoding
Free online hexadecimal encoder/decoder, converts between text and HEX quickly and accurately.
ASCII Code Conversion
Convert between characters and ASCII codes with one click, supports common and extended ASCII.
Morse Code Conversion
Online Morse code converter, converts text to Morse code and back, with audio playback.
Base64 Encoder/Decoder
Online Base64 encoder/decoder supporting text and files, fast and secure conversion.
HTML Entity Encoder/Decoder
Online HTML entity encoder/decoder, converts special characters to entities to prevent XSS.
Unicode Encoder/Decoder
Online Unicode encoder/decoder, converts characters to \u escape sequences or back to readable text.
Base32 Encode/Decode
Free online Base32 encoding and decoding tool, supports standard Base32 character set, quickly convert text.
Calculators 18
Online Calculator
Free online calculator with basic arithmetic, percentage and square root for daily use.
BMI Calculator
Use our free BMI calculator to quickly compute your body mass index and assess your health.
Percentage Calculator
Use our percentage calculator to quickly compute percentages, discounts and rate changes.
Discount Calculator
Use the discount calculator to see the final price and money saved for smarter shopping.
Mortgage Calculator
Use the mortgage calculator to estimate monthly payments and plan your home budget.
Interest Calculator
Free online interest calculator supporting simple and compound interest for loans or deposits.
Fuel Consumption Calculator
Free online fuel consumption calculator, enters fuel cost, price and distance to compute consumption per 100km.
Body Fat Calculator
Free online Body Fat Calculator. Runs entirely in your browser, no data uploaded, ready to use.
BMR Calculator
Free online BMR Calculator. Runs entirely in your browser, no data uploaded, ready to use.
