Popular Recommendation

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.

Age Calculator
The age calculator calculates the age online according to the selected birthday.

Chinese Commercial Mortgage Calculator
The commercial loan mortgage calculator supports the calculation of the monthly repayment amount and total interest of the mortgage according to the loan amount or house price. The calculation method of housing loan supports the equality corpus and interest and the equality corpus.

Random Phone Number Generator Online
Online random phone number generator, using template syntax to randomly generate phone numbers. This tool supports generating mobile phone numbers in any format.

Full and Half Width Characters Converter Online
Online full width and half width conversion tool, which converts punctuation, English letters, numbers, and other characters in input text to each other in full width and half width. The converted results support copying and downloading.

Merge File Online
Online file merging, supports merging text files and binary files. Merge without restrictions on the number and size of files.

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.

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.

Chinese Character Stroke Order Query
Online Chinese character stroke order query, support the query of Chinese character or sentence stroke order, support the online test of stroke order.
Latest Online

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.

JSON Diff Online
Online JSON comparison tool, input two JSON data and compare their differences. The comparison result will indicate missing attributes, different value types, different values, etc.

Convert Chinese Uppercase Numbers to Arabic Numerals Online
Online tool for converting Chinese uppercase numbers to Arabic numerals, supporting the conversion of Chinese numerals (一, 二, 三, etc.) and Chinese uppercase numbers (壹, 贰, 叁, etc.) to Arabic numerals (123). The conversion results can be copied and downloaded.

WGS84 and CGCS2000 Coordinate Converter Online
Online WGS84 and CGCS2000 coordinates high-precision conversion tool, supports different versions of WGS84 coordinates and CGCS2000 coordinates conversion each other. The input coordinates support XYZ spatial cartesian coordinates and LBH geodetic coordinates. The conversion supports epoch calculation and ITRF framework coordinate conversion.