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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.
Seal Generator Online
Online seal generator, supporting the online generation of company seals, institutional seals, and invoice seals. The generated electronic seal supports downloading to the local location.
Countdown Timer Online
Countdown timer online supports online countdown. After the countdown, you can set the sound of playing alarm.
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.
DES Encryption and Decryption
Des symmetric encryption is a more traditional encryption method. Its encryption and decryption operations use the same key. When transmitting and processing information, the sender and receiver of information must jointly hold the password (called symmetric password). It is a symmetric encryption algorithm.
UUID Generator Online
UUID online generator, guid online generator tool (GUID is a term for UUID by Microsoft). Support the generation of UUIDs for version 1 and version 4 algorithms. Version4 UUID is generally used.
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.
Reduce Lines of Text to One Line Online
A tool for connecting multiple lines of text online into one line, which can specify parameters such as join delimiters, whether to remove leading and trailing blanks, and whether to retain blank lines. Processing results can be downloaded locally.
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.
GIF Merge Online
Online GIF merging tool, open multiple GIF images and merge them into one GIF image. Merge supports sequential and simultaneous play of GIF, and supports setting GIF image size and other parameters.
PDF Encryption Online
Online PDF encryption tool, supporting password protection for PDF files, selecting different encryption algorithms, and setting different PDF protection restrictions.
Latest Online
Calculator Online
Online calculator. Enter a mathematical calculation expression and calculate the result of the expression. It supports various functions such as arithmetic functions, trigonometric functions, matrix functions, probability functions, relational functions, and statistical functions. It also supports the calculation of high precision floating - point numbers, large integers, complex numbers, and matrices.
Modify Image DPI Online
Online modify image DPI tool, support single or batch modify image DPI (dots per inch), support modify jpg, jpeg, png, bmp, webp format images.
OTP Code Generator Online
Online OTP Password Generator, supports generating TOTP(Time-Based One-Time Password) and HOTP(HMAC-based One-time Password) passwords. The generated TOTP passwords can be imported into Google Authenticator and Microsoft Authenticator.
Data Masking Online
Online data masking tool that supports opening txt, csv, json, and excel data to perform hash masking, mask masking, replacement masking, transformation masking, encryption masking, and shuffling masking on sensitive data. The desensitized data can be downloaded locally.
KMAC Calculate and Verify Online
Online KMAC (KECCAK Message Authentication Code) calculation and verification tool, supporting online calculation and verification of KMAC. Support input data and keys, select KMAC-128 or KMAC-256 algorithm, set output bit length and other parameters.
BCrypt Derive Key and Verify Online
Online BCrypt derived key and verification tool, using the bcrypt Password Based Key Derivation Function to derive keys based on passwords and random salt, supporting custom cost and other parameters. Support online verification of BCrypt derived keys.
SCrypt Derive Key and Verify Online
Online SCrypt derived key and verification tool, using scrypt Password Based Key Derivation Function to derive keys based on password and random salt, supporting custom block size, CPU/memory cost, parallelization, derived key length and other parameters. Support online verification of SCrypt derived keys.
Chinese Idiom Fill Online
Online chinese idiom fill in the blank tool, fill in the text of chinese idioms at any position, and search for chinese idioms. Support filling in one or more words.
HKDF Derive Key and Verify Online
Online HKDF derived key and verification tool, using the HMAC-based Extract-and-Expand Key Derivation Function algorithm, derives keys based on the input key and random salt, supports custom hash functions, derived key length, carried information and other parameters. Support online verification of HKDF derived keys.
PBKDF2 Derive Key and Verify Online
Online PBKDF2 derived key and verification tool, using Password Based Key Derivation Function 2 to export keys based on passwords and random salt, supporting custom hash functions, derived key length, iteration times and other parameters. Support online verification of PBKDF2 derived keys.
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.
Child Height Calculator Online
Online height calculator for children, predicting and calculating their height based on multiple parameters, and providing height standard references for different age groups.
