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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.
Stopwatch Online
Online stopwatch timer supports online stopwatch timing, millisecond time, pause, mark and download functions.
Unit Converter Online
Unit converter online supports the conversion of multiple units such as length, weight, area, volume data.
Countdown Timer Online
Countdown timer online supports online countdown. After the countdown, you can set the sound of playing alarm.
Hash Calculation Online
Calculate the hash value of text and file online, and the calculation supports MD2, MD4, MD5, SHA1, SHA256, SHA384, SHA512, SHA3-224, SHA3-256, SHA3-384, SHA3-512 algorithms. The input data supports string, hex, base64 string or file. The hash value of the corresponding data is calculated, and the calculation result is expressed as hexadecimal string and base64 string.
String Hex Converter
String hex conversion (hex to string, string to hex) converts the string into a byte array using the selected character set. Each byte in the byte array is encoded into two hexadecimal characters to obtain the hex string result.
Base Converter
Number base converter, which supports the conversion of data within thirty-six hexadecimal, such as binary, octal, decimal, hexadecimal, etc. Conversion supports integer and float numbers.
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.
Convert Image to Pixel Image Online
The online image to Pixel image tool converts uploaded images to pixel style images. The converted pixel images can be downloaded locally.
JSON Format/JSON Parse Online
JSON Format/JSON Parse Online tool support online verification of JSON data format, formatting JSON data display, parsing JSON data, compressing JSON data and escaping JSON data. JSON data source supports inputting strings, opening local files and opening URLs.
Font Subset Generate Online
Online font subset tool, open otf, ttf, woff, woff2 font files, fill in the text or unicode codepoint range, and generate the subset of the font file to reduce the size of the font file. The cropped font file supports downloading to the local location.
Keyboard Event Information Online
Online keyboard key information tool, displaying key, code, keycode, location, modifiers and other key information of keyboard key events in web pages, and providing a key information query comparison table.
Latest Online
CIDR Aggregate Online
Online CIDR aggregation calculator, supporting the aggregation of multiple IPs or multiple sub-CIDRs into one CIDR, and supporting both IPv4 and IPv6.
JSON Key Rename Online
Online JSON key renaming tool, supports renaming keys of input JSON data, supports lowerCamelCase,UpperCamelCase,lowercase,UPPERCASE,lower_snake_case,UPPER_SNAKE_CASE,kebab-case, There are various renaming methods such as custom renaming rules. Support adding prefixes or suffixes to keys and setting rules for handling key name conflicts.
Number Sort Online
Online number sorting tool that supports sorting a large number of input numbers and supports multiple ways of inputting or extracting numbers. Supports sorting very large integers and very large floating-point numbers.
ChaCha20 Encrypt and Decrypt Online
Online ChaCha20 Encryption and Decryption Tool, supporting ChaCha20, XChaCha20, ChaCha20-Poly1305, and XChaCha20-Poly1305 algorithms for encryption and decryption, with input data formats including string, hex, and base64, and the ability to select from multiple character sets.
Information Entropy Calculator Online
The online information entropy (Shannon entropy) calculator supports calculating the entropy of binary data, text data, and probability distributions, and supports setting the logarithmic base to 2, e, and 10. Support setting result precision.
Protocol Buffers Encode and Decode Online
Online Protocol Buffer Encoding and Decoding Tool, supporting online decoding of protocol buffer data and online encoding of protocol buffer data. Supports opening multiple proto definition files and decoding and encoding multiple messages.
Geohash Encode Decode Online
Online Geohash encoding and decoding tool, supports Geohash encoding and decoding of latitude and longitude positions, supports querying all coordinate points within a specified radius of the center point, and supports querying the closest coordinate point to the center point.
BaseN Encode and Decode Online
Online BaseN encoding and decoding tool, supporting BaseN encoding and decoding of data such as string, hex, base64, files, etc., supporting algorithms such as base2, base8, base16, base32, base64, base58, base85, base91, base100, etc. This tool also supports custom algorithms.
MessagePack and JSON Converter Online
Online Message Pack and JSON conversion tool, supporting the conversion between binary data in Message Pack format and data in JSON text format. Message Pack data supports input formats such as hex, base64, byte arrays, etc.
Fetal Weight Calculator Online
Online fetal weight calculator predicts and calculates fetal weight based on parameters such as uterine height, abdominal circumference, biparietal diameter, and femur length. Support viewing the distribution of fetal weight, biparietal diameter, abdominal circumference, femur length, and other parameters at different weeks.
ABC Music Notation Editor Online
Online ABC score editor, using ABC notation method to edit scores, supports real-time preview of generated staff, and supports downloading as MIDI and WAV files.
Nano ID Generator Online
Online Nano ID generator, supports batch generation of Nano IDs, supports custom alphabet, and custom Nano ID length.
