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393 online tools , 66590884 times of use

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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.

Countdown Timer Online

Countdown timer online supports online countdown. After the countdown, you can set the sound of playing alarm.

Unit Converter Online

Unit converter online supports the conversion of multiple units such as length, weight, area, volume data.

Body Fat Percentage Calculator Online

The online body fat percentage calculator uses BMI or parameters such as weight, waist circumference, and height to estimate body fat percentage, and provides a classification reference for body fat percentage.

Emoticons Collection Online

Online emoticons collection, displaying cute and interesting text expression emoji, supporting one-click copying.

Barcode Sacnner Online

Online barcode scanning tool, supporting batch scanning of barcodes in EAN-13, EAN-8, UPC-A, UPC-E, Code 128, Code 39, Code 93, ITF and other code systems. The scanning results can be downloaded locally.

RC4 Encryption and Decryption Online

The online RC4 encryption and decryption tool provides online RC4 encryption and decryption test. The input and output supports three formats: hex, string and base64.

IP Number Converter

IP and numbers are converted to each other, and the converted number is a 32-bit unsigned integer number. IPv4 address is a 32-bit binary number, which is usually divided into 4 "8-bit binary numbers" (that is, 4 bytes). IP addresses are usually expressed in the form of (a.b.c.d) by "dotted decimal", where a, B, C and D are decimal integers between 0 and 255. For example, the dotted decimal IP address (100.4.5.6) is actually a 32-bit binary number (01100100.00000100.00000101.00000110).

Random Data Generator Online

Generate random string data, numerical data, time data, telephone number data and other test data online, generate data randomly based on the string template.

RC5 Encryption and Decryption Online

The online RC5 encryption and decryption tool provides online RC5 encryption and decryption test. The encryption and decryption supports five encryption modes: CBC, CFB, OFB, CTR and ECB, and the input and output supports three formats: hex, string and base64.

SQL Format / Compress

Online sql statement formatting (beautification) and compression tools support the formatting and compression of SQL statements such as SQL-2011, MariaDB, MySQL, PostgreSQL, IBM DB2, Oracle PL/SQL, Spark, SQL Server T-SQL, etc.

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Character Set Encoding Information Query Online

Online character set encoding information query tool, which queries the encoding range supported by character set encoding and the Unicode code point range supported. This tool supports nearly a hundred character set encodings. Support querying characters within the character set encoding range or Unicode encoding range.

Random Number with Sum Generator Online

Online sum random number generation tool, supporting the random generation of random numbers within a specified range, with a sum equal to the specified value. Support random generation of integers and decimals, integers support generation of large integers, decimals support precision to 1000 decimal places.

Random Color Generator Online

Online random color generator, supporting the random generation of colors in all formats such as RGB, RGBA, HSL, HSV, CMYK, YUV, hex, etc. The generated colors support preview and download.

Simple Image Editor Online

Online simple image editor tool that supports online cropping, flipping, rotating, resizing, free drawing, adding text, adding icons, adding graphics, setting masks, adding filters and other image editing effects. It supports opening images in JPG, JPEG, PNG, WebP, BMP and other formats. The edited images can be downloaded in JPG, JPEG, PNG, WebP formats.

File Type Detection Online

Online file type detection, supporting the detection of hundreds of binary file formats. Support batch detection of file formats, and the detection results can be downloaded locally.

Chinese Retirement Age Calculator Online

Online retirement age calculator, supporting the calculation of retirement age for male employees, ordinary female employees (formerly 50 year old retired female employees), female employees in management, technology, and cadre positions (formerly 55 year old retired female employees), as well as the number of months of delayed retirement after the reform. This tool displays both flexible early retirement and flexible delayed retirement times.

Add Filters to Batch Images Online

Online add filters to batch image tool, supports batch opening of images in jpe, jpeg, png, webp formats, adding filters such as grayscale, black and white, invert, noise, pixelate, etc. to images. The processed images can be downloaded locally.

File Encoding Detect and Convert Online

Online file encoding detection and conversion tool, which detects the character set encoding of text files online and supports the conversion of character set encoding of text files. Supports various character set encodings such as UTF-8, UTF-16, UTF-32, ASCII, GBK, GB12030, etc.

Card No. and Password Generator Online

Online card number and password generator, supporting batch generation of card numbers and passwords. Support generating card numbers based on various rules such as numbers, time, and random generation, setting password generation rules, and setting the output format of card number password results.

Guess Numbers Online

Online guessing numbers tool that supports generating classic 1A2B guessing numbers and guessing numbers based on larger or lesser prompts.

Image Coordinate Picking Online

Online image coordinate picking tool, which picks up the pixel coordinates of positions on the image online.

Add Background Color to Transparent Background Images Online

Online transparent background image add background color tool, support for png, webp and other transparent background format image add background color, support batch add background color.