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Random Number Generator Online

The online random number generator supports the generation of random integer values and random floating-point values. When unique is specified, all generated random numbers are not repeated.

Morse Code Convert Online

Morse Code Convert Online supports encoding text (including Chinese) into Morse code and decoding Morse code into ordinary text. Text supports all unicdoe characters.

CRC Calculation Online

The cyclic redundancy check calculation function of CRC8, CRC16, CRC32 and crc64 is provided to detect or verify possible errors after data transmission or saving. It uses the principle of division and remainder to detect errors. When calculating, pay attention to different algorithms (including polynomial, initial value, whether to reverse, etc.), and the calculation results will be different.

Stopwatch Online

Online stopwatch timer supports online stopwatch timing, millisecond time, pause, mark and download functions.

Run Code Online

The online code running tool supports online running, editing and compiling of dozens of programming languages such as Java, c#, golang, C, C + +, JS, typescript, PHP and rust.


The websocket online test tool can be used as a websocket client to connect to the websocket server of the intranet or public network, and supports receiving and sending text messages in real time. Websocket is a new protocol under HTML5. It realizes the full duplex communication between browser and server, which can better save server resources and bandwidth, and achieve the purpose of real-time communication. Like HTTP, it transmits data through the established TCP connection, but its biggest difference from HTTP is that websocket is a two-way communication protocol. After the connection is established, the websocket server and client can actively send or receive data to each other, just like socket; Like TCP, websocket needs to establish a connection first. Only after the connection is successful can they communicate with each other.

Chines to Pinyin

The online Chinese character to Pinyin tool converts Chinese characters into pinyin, and supports the functions of displaying tone, polyphone, uppercase Pinyin, lowercase Pinyin and so on.

File Hash Calculation

Calculate the MD5, SHA1, sha256, SHA512, sha3-256 and sha3-512 hash values of the file. The hash result is expressed as a hexadecimal string.

Java 8 Documentation

Java 8 document online provides java 8 (Java SDK 1.8) document online viewing and java 8 API online viewing.

Common Ports And Protocols List

A complete list of common ports and protocols online, listing common port numbers, protocols used, service names, service descriptions and other information.

Zodiac Month Table

Zodiac month table provides month query and date query of zodiac.

Free Image Editor Online

Free Image Editor Online tool is free online image editor using HTML5. Edit, adjust your images, add effects online in your browser, without installing anything...

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Express Query Online

Online express query tools include Shunfeng Express, JD Express,China Postal Express, Shentong Express, Yuantong Express, Yunda Express, Tiantian Express, Zhongtong Express, DHL Express, UPS Express, Fedex, etc.

Image Quality Enhancement Online

The online image quality enhancement tool, based on the image quality analysis technology and AI reconstruction technology, enhances the low quality blurred images in a one-stop way, greatly improves the portrait quality and overall picture definition, intelligently and quickly denoises the blurred images, optimizes the image texture details, makes the images more natural and clear, and improves the user experience.

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Mathematical Formula Drawing Chart Online

The online mathematical formula drawing chart tool supports the input of any mathematical formula, and then the input formula is drawn into a chart. Formulas support trigonometric functions, exponents, logarithms, polynomials, addition, subtraction, multiplication and division, etc.

Chinese Character Splitting Online

The Chinese character splitting tool online, which splits Chinese characters from left to right or from top to bottom.

Old Photo Repair Online

The online old photo repair tool uploads old photos, and performs multiple repairs and optimizations on image quality based on depth learning, including defogging, denoising, black and white coloring, super resolution lossless amplification, etc. Returns clear images after color enhancement and photo blur removal.

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Intelligent Image Matting Online

The online intelligent image matting tool supports online one click matting of portraits or main objects in the picture, and supports setting the background of objects.

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PDF Text Recognition Online

The PDF text tecognition online tool supports the detection and recognition of text in PDF files. The tool has high recognition accuracy and stable service performance.

OCR Online

The online image text recognition tool supports the detection and recognition of characters in images, and supports the text recognition of multiple languages such as Chinese simplified/traditional, English, Japanese, Arabic, Russian, German, French, Spanish, and Hindi.

Make Gauge Chart Online

Make gauge charts online for free. Make gauge chart online, support filling in data online or uploading excel files, and support exporting the generated gauge chart to JPG, PNG and PDF files.

Make Funnel Chart Online

Make funnel charts online for free. Make funnel chart online, support filling in data online or uploading excel files, and support exporting the generated funnel chart to JPG, PNG and PDF files.

Text Extraction Tool Online

Online text extraction tool to extract email, IP address, domain name, number, character and other information from the input text.

Make Doughnut Chart Online

Make doughnut charts online for free. Make doughnut chart online, support filling in data online or uploading excel files, and support exporting the generated doughnut chart to JPG, PNG and PDF files.