UTF8 File BOM Detector

Quickly detect if a UTF8 file contains a BOM mark and provide a one-click removal function to optimize file encoding.

File MD5 Batch Modifier

Batch modify file MD5 hash values, generate new MD5 checksums, and solve duplicate file verification issues.

Batch File MD5 Verification

Online batch verification of file MD5 values, quickly verifying file integrity and consistency.

Batch File Encoding Detection

Batch detect file encoding format online, quickly identify text encoding types, solve garbled characters, and improve processing efficiency.

Serpent Encryption and Decryption

Serpent encryption and decryption online tool, supporting Serpent algorithm data encryption and decryption, ensuring information security and privacy.

BlowFish Encryption and Decryption

Online encryption and decryption tool, providing efficient symmetric algorithms to protect data security and privacy. Supports multiple encoding formats.

TripleDES Encryption and Decryption

TripleDES encryption and decryption tool, providing data security protection, supporting multiple modes and padding schemes, efficient and convenient.

Rabbit Encryption and Decryption

Rabbit Encryption and Decryption

RC4 Encryption and Decryption

RC4 online encryption and decryption tool, providing fast and easy-to-use encryption and decryption services for the RC4 symmetric stream cipher.

摄像头测试器

在线摄像头测试，快速检测功能、画面质量与参数，辅助调试校准。

耳机检测

免费在线耳机检测工具，快速确认耳机连接状态、左右声道，确保音频设备正常工作，提供音频故障排查。

麦克风测试器

在线麦克风测试工具，快速检测麦克风功能、音量及录音效果，确保音频输入正常。

MIDI测试器

在线MIDI测试器，快速播放、调试与分析MIDI文件及十六进制数据，助您轻松理解和处理MIDI信息，提高音乐制作或开发效率。

GPU测试器

在线GPU测试工具，快速检测显卡性能、稳定性与温度，全面评估GPU状态。

Random UserAgent Batch Generator

Online batch generation of random User-Agent strings to simulate different browsers and effectively circumvent anti-crawler detection.

Batch Random MAC Address Generator

Batch random MAC address generator, used for network testing, device simulation, privacy anonymity, and other scenarios.

Bulk Random IP Generator

Efficient online IP generator, bulk create random IPv4/IPv6 addresses, customize quantity and range, suitable for network testing, data filling.

Bulk Random Mobile Number Generator

Online bulk random mobile number generator, customize number segments and quantity, quickly generate test data, protect user privacy.

哥斯达黎加教师节

哥斯达黎加教师节信息查询工具，提供日期、由来与庆祝方式。

萨尔瓦多教师节

快速查询萨尔瓦多教师节的固定日期、历史渊源及庆祝方式，了解其在萨尔瓦多教育体系中的重要意义。

洪都拉斯教师节

洪都拉斯教师节日期、由来、庆祝方式在线查询，了解其教育意义。

危地马拉教师节

快速查询危地马拉教师节的准确日期，了解其历史背景、庆祝习俗与文化意义。

墨西哥教师节

查询墨西哥教师节日期、由来、庆祝方式及文化背景，了解墨西哥教师节的详细信息。

巴西教师节

查询巴西教师节是哪一天，了解其日期、由来及庆祝习俗。

阿根廷教师节

阿根廷教师节信息查询工具，提供日期、起源、庆祝方式等详尽内容。

巴拿马教师节

巴拿马教师节日期查询工具，助您了解其历史渊源、庆祝习俗与文化意义。

苏丹教师节

在线查询苏丹教师节日期、历史与庆祝信息，便捷了解节日详情及纪念意义。

Service Remuneration Individual Income Tax Calculator

Quickly calculate individual income tax on service remuneration and after-tax income, helping you clearly understand the tax burden on service fees.

Litigation Fee Calculator

Online litigation fee calculator, accurately calculates various case acceptance fees, property and non-property dispute fees, quickly estimates litigation costs, helping you clearly understand litigation fees

House Deed Tax Calculator

Calculate house deed tax, stamp duty, maintenance fund, and other home purchase taxes and fees online to help you clearly understand home purchase costs.

After-tax Salary Calculator

Reverse calculate pre-tax salary and individual income tax, based on after-tax salary and social security contributions, helping you understand your salary composition clearly.

Five Insurances and One Housing Fund Calculator

Quickly calculate individual and company contributions for five insurances and one housing fund, social security, and provident fund, helping you understand your salary composition.

Car Loan Calculator

Online car loan calculator, quickly calculate car loan amount, monthly payment, total interest, and repayment plan to help you easily plan your car purchase budget.

Bank Card Four-Element Batch Query

Batch query bank card four elements online, verify identity information and reserved mobile number.

Batch Query of Corporate Account Affiliation

Batch query the opening bank affiliation (province and city) of corporate bank accounts to improve financial risk control efficiency.

Bank Card Two-Factor Batch Verification

Batch verification of bank card name and card number two-factor consistency, supporting fast real-name authentication and ensuring transaction security.

TDEE Daily Total Energy Expenditure Calculator

Accurately calculate your Total Daily Energy Expenditure (TDEE) to help you scientifically plan your calorie intake and achieve health goals such as fat loss, muscle gain, or weight maintenance.

Ovulation Calculator

Online ovulation calculator, accurately predicts women's fertile window, aids scientific conception planning and understanding of the menstrual cycle.

Fetal Gestational Age Comparison Chart

Quickly determine fetal gestational age using ultrasound measurements such as crown-rump length (CRL) and head circumference (HC), covering early to late pregnancy, to help you understand fetal development.

Fetal Gestational Age Calculator

Fetal Gestational Age Calculator: Accurately calculate fetal gestational age based on ultrasound data (e.g., Crown-Rump Length, Biparietal Diameter, Head Circumference, Femur Length) to help you understand pregnancy weeks and estimate your due date.

Fetal Weight Gestational Age Reference Table

NICHD Asian singleton fetal gestational age weight reference table, helping you quickly assess fetal development.

Fetal Growth Parameters Reference Chart

Provides reference values for fetal biparietal diameter, head circumference, abdominal circumference, femur length, and other biological parameters for each gestational week, assisting in the assessment of fetal growth and development.

Water Intake Calculator

Quickly calculate the recommended daily water intake based on weight, scientifically hydrate, and help you stay healthy.

Maximum Heart Rate MHR Calculator

Estimate Maximum Heart Rate MHR based on age, helping you exercise scientifically and manage your health.

Waist-to-Hip Ratio WHR Calculator

Calculate WHR online, assess central obesity risk, and monitor physical health.

Ping Test

Ping test tool, quickly detects network connectivity, latency, and packet loss rate, easily diagnoses network faults.

CIDR Subnet Calculator

CIDR subnet calculator, quickly get IP address subnet mask, network address, broadcast address, and available host range to facilitate efficient network planning.

Port Detection

Online port detection tool, quickly scans IP or domain port open status, a powerful tool for network troubleshooting and security verification.

License Plate Extractor

Online license plate extraction tool, AI technology accurately identifies license plate numbers from images, provides license plate region of origin information, fast and efficient.

Date Extractor

Intelligent date extractor, quickly identifies and parses various date and time information in text online, efficient and convenient.

Bank Card Extractor

Bank card BIN query and verification, identify issuing bank, country/region, card organization, and card type in advance.

URL Extractor

Online URL extractor, quickly parses and extracts all valid URL links from any text.

Batch IP Address Location Query

Accurate batch query of IP geographic location and network information, supporting multi-dimensional data analysis

Global Public DNS Resolution IP Database

Global public DNS resolution IP address database, query common public DNS servers in various countries, optimize network connection and resolution speed.

Perfect Cube Expansion Calculator

Online perfect cube expansion calculator, quickly find the algebraic expansion of (a+b)³ and (a-b)³, master cube formulas.

Perfect Square Expansion Calculator

Quickly expand perfect square expressions online, simplifying (a±b)² algebraic calculations and learning.

Sum of Cubes Formula Calculator

Calculate the sum of cubes of numbers online, quickly solving problems involving the sum of cubes of integers, natural numbers, and consecutive numbers.

Cube Difference Formula Calculator

Online cube difference formula calculator, quickly finds the value of a³-b³, supports integer and decimal operations, simplifies algebraic calculations.

Difference of Squares Formula Calculator

Online difference of squares formula calculator, quickly calculates (a+b)(a-b) expressions, simplifies algebraic operations.

Nth Power Calculator

Online Nth power calculator, quickly calculates the Nth power of any number, supports large numbers and floating-point numbers, convenient and efficient.

Cube Calculator

Online cube calculator, quickly calculates the cube (third power) of any number, convenient and efficient, aiding mathematical and engineering calculations.

Square Calculator

Online square calculator, quickly calculates the square of integers and decimals, simple and efficient.

Nth Root Calculator

Online Nth root calculator, accurately calculates the Nth root of any number, efficient root extraction tool, supports integer and fractional powers.

JSON Compression

Online JSON compression tool, efficiently streamlines JSON data, reduces file size, and improves transmission and storage efficiency.

JSON to Typescript Zod Class

Efficiently convert JSON data structures into TypeScript Zod type validation schemas, simplifying front-end development and enhancing data security and code quality.

JSON to Typescript Effect Schema Class

JSON online to Typescript Effect Schema class definition, quickly generate efficient data validation.

JSON to Smithy Class

Online JSON to Smithy class tool, quickly convert JSON data structures into Smithy model definitions, simplifying API design.

JSON to SCALA3 Class

Online conversion of JSON data structures to Scala 3 case classes, quickly generating data model code to improve development efficiency.

JSON to PIKE Class

JSON to PIKE class converter, efficiently generates PIKE language class definition code from JSON data structures online, simplifying data model construction.

JSON to JSON Schema Class

Online JSON to JSON Schema tool, automatically generates data structure definitions, simplifies data validation and standardization.

JSON to Javascript PropTypes Class

JSON data structure to JavaScript PropTypes class, automatically generates React property validation code, improving front-end development efficiency.

JSON to FLOW Class

JSON data to FLOW class, automatically generate data model code, simplify development.

PDF转TXT

在线PDF转TXT工具，将PDF文档高效转换为可复制编辑的纯文本文件。

ODT转PDF

免费在线ODT转PDF转换器，高效将ODT文档转换为PDF文件，保留排版与图片，方便分享打印。

邮件转PDF

EML转PDF在线工具，高效转换EML邮件为PDF文档，便于存档、打印与分享。

Remove PDF Password

Online tool to remove PDF open passwords, easily unlock encrypted documents, and protect private data.

MARKDOWN to PDF

Professional Markdown to PDF tool, quickly converts MD files into high-quality PDF documents.

HTML to PDF

Quickly convert HTML files to PDF format online, simple and easy to use.

Image to PDF

Online image to PDF tool, supports batch conversion of multiple images, various layouts and color modes, easily create PDF documents.

PDF to PPT

Online PDF to PPT tool, supports converting PDF to PPTX, PPT, and ODP formats, helping you easily convert files.

PDF to XML

Online PDF to XML tool, quickly converts PDF document content to XML format for easy data extraction and structuring.

文本转PDF

免费在线文本转PDF转换工具，快速将纯文本内容或文件转换为高质量PDF文档，支持自定义排版和预览。

ODF转PDF

免费在线ODF转PDF转换器，将ODT、ODS、ODP等开放文档格式快速转换为标准PDF文件，方便浏览打印和分享。

PPT转PDF

免费在线PPT转PDF工具，快速将PowerPoint幻灯片转换为高质量PDF文档，兼容多种PPT版本，安全高效。

EXCEL转PDF

免费在线Excel转PDF工具，快速将Excel表格文件转换为高质量PDF文档，操作简便，高效安全。

WORD转PDF

免费在线Word转PDF工具，快速将Word文档（DOCX/DOC）转换为高质量PDF文件，简化您的文档处理与分享。

PDF证书签名

在线PDF证书签名，快速为PDF文件添加数字签名，确保证书真实性和文档完整性。

PDF删除证书签名

在线移除PDF文件中的数字证书签名，轻松删除，保护文档隐私与安全。

PDF清洗

在线PDF清洗工具，智能清理PDF文档冗余数据，瘦身优化，提升处理效率。

更改PDF权限

免费在线更改PDF文档权限，设置打印、复制、编辑等限制，保护您的文件安全。

游戏手柄测试器

在线手柄测试器，精准检测游戏手柄按键、摇杆、振动功能，确保控制器性能完好。

亲戚关系计算器

亲戚关系计算器，快速查询亲戚称谓，解决家庭称呼烦恼。

MBTI职业性格测试93题

MBTI职业性格测试93题，深入分析个人特质，探索职场优势与发展方向，助力职业选择与成长。

大五人格测试25题

免费在线大五人格测试25题，快速评估您的五大人格特质，深入了解性格优势与发展方向。

大五人格测试60题

在线大五人格测试60题，快速评估您的性格特质，深入了解OCEAN模型，助您自我认知与成长。

大五人格测试240题

240题在线大五人格测试，全面评估性格特质，助您深入了解自我，探索优势。

DISC职业性格测试

DISC职业性格测试，助您探索职场行为风格，发掘个人优势，实现职业规划。

Breath Counter

Online breath counter, accurately counts breathing rate and times, conveniently monitors health status, assists with exercise and meditation training.

Random Ukrainian Address Generator

Free random generation of realistic Ukrainian addresses, including street, city, postal code, etc., for data testing, simulation, and privacy protection.