Free online text case conversion tool, supports 17 formats real-time conversion including UPPERCASE, lowercase, Capitalized Case, camelCase, snake_case, kebab-case, Title Case, tOGGLE cASE, aLtErNaTiNg cAsE, etc. One-click copy results, suitable for programming naming, copywriting layout, code variable naming and other scenarios.

Cube Continent game crafting simulator, supports simulated crafting, query item crafting recipes, and add new crafting recipes. Supports all item tiers from T1 to T6, helping players quickly find crafting methods.

Free online random password generator tool, supports custom password length, options to include uppercase and lowercase letters, numbers, special symbols, etc., real-time password strength detection, one-click copy of generated secure passwords. Suitable for account registration, password reset, security key generation and other scenarios, pure front-end generation ensures privacy and security.

Free online text statistical analysis tool, real-time statistics of character count, word count, sentence count, paragraph count, byte size, reading time, etc., supports Chinese and English text analysis and high-frequency vocabulary statistics.

Free online percentage calculation tool, supports multiple calculation modes such as percentage calculation, percentage increase/decrease, percentage difference, etc. Real-time calculation results, save calculation history, suitable for financial analysis, data statistics, discount calculation, growth rate calculation and other scenarios, with a simple and easy-to-use interface.

Free online temperature unit conversion tool, supports real-time conversion between 11 temperature units including Celsius, Fahrenheit, Kelvin, Rankine, Réaumur, and Rømer.

Free online HTTP status code query tool, provides a complete HTTP status code reference manual. Supports filtering by category, keyword search, and includes detailed explanations, causes, and solutions for all standard status codes including 1xx informational responses, 2xx success responses, 3xx redirections, 4xx client errors, and 5xx server errors.

Free online HASH calculation tool, supports multiple hash algorithms such as MD5, SHA1, SHA224, SHA256, SHA384, SHA512, SHA3-256, SHA3-512, RIPEMD-160, supports multiple output formats including hexadecimal, Base64, and binary, with the option to add salt value to enhance security.

Free online URL encoding and decoding tool, supports RFC 3986 standard encoding, form encoding, UTF-8 hexadecimal, Base64 and many other formats, real-time conversion, batch processing, essential tool for web development and debugging.

Free online HTML entity escape tool, supports HTML code escaping and unescaping, provides multiple escape modes such as basic, complete, minimal, numeric, etc., quickly convert HTML special characters, prevent XSS attacks and HTML parsing errors.

Free online URL analysis tool, supports URL parsing, validation, formatting, and comparison. One-click analyze URL structure, validate URL validity, format URL, compare differences between two URLs, suitable for web development, API debugging, and link management.

Free online KeyCode lookup tool, real-time detection of keyboard keys, query keyCode, code, which and other code value information. Supports lookup of common key codes for letter keys, number keys, function keys, control keys, navigation keys, symbol keys, etc. Provides key type classification filtering, an essential development aid for front-end developers and programmers.

Free online date and time conversion tool, supports timestamp conversion, timezone conversion, mutual conversion between multiple date formats, provides batch conversion functionality. Suitable for development debugging, data analysis, cross-timezone collaboration and other scenarios.

Free online integer base conversion tool, supports mutual conversion between bases 2-64 including binary, octal, decimal, hexadecimal, etc. Enter a value in any base, and other bases will be automatically calculated. Suitable for programming development, mathematical calculations and other scenarios.

Free online Roman numeral conversion tool, supports mutual conversion between Arabic numbers and Roman numerals, provides step-by-step conversion breakdown and common number reference. Suitable for learning Roman numerals, historical research, programming development and other scenarios.

Free online Git commands cheat sheet tool, provides quick lookup of commonly used Git commands and one-click copy functionality. Includes complete categories such as basic operations, branch management, remote operations, history viewing, undo operations, supports search and category filtering.

Free online WiFi QR code generator tool, supports multiple encryption types such as WPA/WPA2/WEP/No encryption, customizable QR code size and style. Scan the code to quickly connect to WiFi network without manually entering the password, suitable for stores, homes, and conference scenarios.

Free online QR code generator tool, supports multiple content types such as text, URLs, phone numbers, emails, WiFi configuration, geographic locations, etc. Customizable size and error correction level, one-click generate and download PNG or SVG format.

Free online SVG placeholder image generation tool, supports custom size, background color, border, rounded corners, text and fill patterns. Suitable for web design prototypes, UI component placeholders, document examples and other scenarios, no download required, generate and use instantly.

Free online text difference comparison tool, based on Monaco Editor, supports difference comparison of text content such as code and documents, highlights added, deleted and modified content, supports real-time statistics of changed line counts, suitable for code version comparison, document proofreading and other scenarios.

Free online Chinese character to Pinyin conversion tool, supports multiple Pinyin styles such as with tone marks, without tone marks, numeric tone marks, initials, etc., supports polyphonic character recognition, batch conversion, file upload and other features, suitable for learning Pinyin, pronunciation annotation and other scenarios.

Free online Simplified-Traditional Chinese conversion tool, supports mutual conversion between Simplified Chinese and Traditional Chinese. Supports file upload, history saving, suitable for document processing, web content conversion and other scenarios, with a simple and easy-to-use interface.

Free online length unit conversion tool, supports real-time conversion between 12 length units including meter, kilometer, centimeter, millimeter, inch, foot, mile, nautical mile, light year, etc. Enter any length value to automatically calculate the corresponding values for all units.

Free online UUID generation tool, supports batch generation of all UUID versions V1/V3/V4/V5, with customizable format (uppercase/lowercase, with or without hyphens), one-click copy or download. Suitable for database primary keys, API keys, distributed IDs, session identifiers and other scenarios, no download or installation required, free and ad-free.

Professional online color picker tool, supports conversion of multiple color formats such as HEX, RGB, HSL, HWB, LCH, CMYK, with real-time preview, transparency adjustment, and preset color library, providing convenient color management solutions for designers and developers.

Free online random string generation tool, supports generating secure passwords, API keys, verification codes, hexadecimal strings, etc. Provides multiple generation modes and customization options, uses cryptographic random number generation, real-time entropy calculation, supports batch generation and export.

Free online ASCII character table lookup tool, supports decimal, hexadecimal, binary, octal conversion, includes complete character set of basic ASCII (0-127) and extended ASCII (128-255), essential character encoding query tool for programmers.

Free online Chinese capital amount conversion tool, supports bidirectional conversion between numeric amounts and Chinese capital amounts. Provides real-time conversion and batch conversion functions, complies with financial standards, accurate to the cent. Suitable for financial reimbursement, invoice issuance, contract amounts and other scenarios.

Free online random number generation tool, supports generating random integers, floating-point numbers, Gaussian distribution random numbers, and random arrays. Provides pseudo-random and cryptographically secure random number modes, supports batch generation, sorting, deduplication and other features, suitable for lucky draws, password generation, scientific computing and other scenarios.

Free online Unicode encoding conversion tool, supports converting text to Unicode and Unicode to text, supports multiple encoding formats such as U+ format, HTML entities, Java, Python, etc., real-time conversion, convenient and fast.

Free online paper size lookup tool, supports full series of paper size comparison including ISO A/B/C series, North American standards, photo sizes, special specifications, etc. Provides dual unit display in millimeters (mm) and inches (in), aspect ratio calculation, common usage explanations, an essential paper specification reference tool for designers and printing professionals.

Free online material density lookup tool, provides density data for various materials including metals, non-metals, liquids, and gases. Supports multi-unit switching, an essential material reference tool for engineers and researchers.

Free online tool for searching national and regional flags worldwide, provides high-resolution flag images for viewing and download. Supports filtering by region, flag type, and search queries, includes detailed flag information such as adoption year, aspect ratio, color composition, and more.

Free online China region information lookup tool, supports five-level administrative division queries from province to village, includes complete region information such as postal code, telephone area code, ID card prefix, license plate prefix, etc. Real-time query, accurate data, no download required, suitable for address filling, information verification, data analysis and other scenarios.

Free online proportion calculation tool, supports basic proportion calculation, multi-value ratio simplification, proportional scaling of dimensions, percentage calculation, fraction calculation. Suitable for design, photography, video production and other scenarios, helps quickly calculate aspect ratios, scaling ratios, etc.

Free online area unit conversion tool, supports real-time conversion between 18 area units including square meter, square kilometer, hectare, acre, mu, square foot, etc. Includes four main categories: international units, metric units, imperial units, and Chinese customary units. Enter any area value to automatically calculate the corresponding values for all units.

Free online volume unit conversion tool, supports real-time conversion between 25 volume units including cubic meter, liter, milliliter, gallon, pint, barrel, etc. Includes four main categories: international units, metric volume units, imperial units, and US units. Enter any volume value to automatically calculate the corresponding values for all units.

Free online weight unit conversion tool, supports real-time conversion between 23 weight units including kilogram, gram, pound, ounce, jin, liang, etc., and provides reference weights for common objects.

Free online volume calculation tool, supports volume calculation of 8 common geometric shapes: cube, cuboid, sphere, cylinder, cone, triangular prism, quadrangular pyramid, and torus. Enter geometric parameters to automatically calculate volume, surface area and other data, supports multiple unit conversions, simple and easy-to-use interface.

Free online perimeter calculation tool, supports perimeter calculation of 7 common geometric shapes: square, rectangle, triangle, circle, ellipse, regular polygon, and trapezoid. Enter shape parameters to automatically calculate the perimeter, supports multiple length unit conversions.