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.

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.

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.

Java regular expression test

Java regular expression online testing provides Java regular expression online matching and replacement functions. By controlling parameter settings, you can control the behavior of regular expressions, such as ignoring case, multiline mode, etc.

URLEncode encoding and decoding

URLEncode encoding and decoding, convert the characters to be transcoded into hexadecimal, then take 4 bits from right to left (less than 4 bits are processed directly), make one bit every 2 bits, add% in front, and encode into% XY format. It is applicable to the encoding of uniform resource identifier (URI). It is also used to prepare data for "application / x-www-form-urlencoded" mime, and then submit HTML form data through HTTP request.

Python 3 Documentation

Python 3 document online provides Python 3 document online viewing and Python 3 API online viewing.

Explore Code Repository

Search the code repository and code snippets of dozens of programming languages such as java, c#, golang, js and python online. edit and run code online.

ASCII Code Table

ASCII code table online, query ASCII code 0-255 corresponding characters, including control characters, printable characters and extended characters.

Random Mac Address Generator

The online random MAC address generator supports the generation of 48 bit or 64 bit MAC addresses, and the generation parameters support the setting of case, address format, generation count, limited generation address range, etc.

RSA Encryption and Decryption Online

Online asymmetric RSA encryption and decryption tool supports public key encryption and private key decryption. Private key encryption, public key decryption. It supports the input of public and private keys in PEM and HEX formats. The input data and output results support String, Hex and Base64.

RSA Key Generator Online

The online RSA asymmetric encryption public key and private key generation tool generates 1024,2048,4096 bit length private keys and public keys online. The generated results support the output of PEM format and HEX format.

Alarm Clock Online

Set the alarm clock online and set the alarm time. When the time arrives, the alarm will ring.

Chinese Allegorical Sayings

Chinese allegorical sayings full list, chinese allegorical sayings query online.This tool contains more than 14000 allegorical sayings.

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.

Common MIME Type List

The list of common MIME types lists the common MIME types, their corresponding file extensions and document types.

Chinese Idiom Solitaire

Chinese Idiom Solitaire Online, a complete collection of idioms solitaire. The idiom database covers tens of thousands of idioms.