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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.
Countdown Timer Online
Countdown timer online supports online countdown. After the countdown, you can set the sound of playing alarm.
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.
BMI Index Calculator
Online free BMI index calculator provides BMI index calculation, introduction of BMI calculation formula and display of BMI normal value range.
Add Watermark to Image Online
The online image watermarking tool supports adding text watermarks and image watermarks to images.
Lunar and Solar Calendar Converter
The lunar and solar calendar conversion tool provides online Chinese lunar calendar to solar calendar, and solar to Chinese lunar calendar functions.
China Portfolio Mortgage Calculator
Online portfolio mortgage calculator to calculate the monthly repayment amount and interest expenditure of provident fund loan and commercial loan portfolio mortgage.
YAML to JSON Online
The YAML and JSON mutual conversion tool online supports the function of YAML to JSON and JSON to YAML.
Rotate Clock Online
Rotate clock online, display the rotating digital clock online, and support full screen display.
Batch Modify Image Size Online
Online batch image size modification tool, supporting batch opening of JPEG, JPG, PNG, GIF and webP images, batch modifying the size of images, and downloading the modified images locally.
Regular Expression Visualization Online
Online regular expression visualization tool, generating visual structure diagrams of JavaScript regular expressions or JavaScript like regular expressions. The generated visual structure diagrams are intuitive and easy to understand, assisting in regular expression learning.
HTTP Response Status Code Full List
Online HTTP response status code query. The HTTP status code indicates the processing status of HTTP requests. It is generally divided into five categories: information, success, redirection, client error, and service error. Common examples include 200 indicating successful response, 404 not found, 500 server internal error, etc.
Latest Online
Make Danmaku Online
Online handheld danmaku tool, supporting online generation of handheld danmaku and scrolling LED text. Support setting parameters such as text font, text color, text size, background color, background image, scrolling speed, etc. Support gradient color text, blinking text and other effects.
Flip Coin Online
Online coin flip tool, randomly flip coins to see if the result is heads or tails.
Ruler Online
Online ruler tool, supports measuring length online using centimeter ruler, inch ruler, and chinese chi ruler. Support setting parameters such as scale, ruler color, etc.
View and Remove Image Metadata Online
Online image metadata viewing and removal tool, supports viewing and removing various metadata information such as EXIF, GPS, IPTC, XMP, JFIF, etc. of images, and supports multiple image formats such as JPEG, JPG, PNG, WEBP, GIF, SVG, etc. This tool supports batch viewing and removal of image metadata.
CMAC Calculate Online
Online CMAC (Cipher based Message Authentication Code) calculation tool, supporting the use of AES, DES, SM4 and other algorithms to calculate CMAC values. Input and output support string, hex, base64, binary formats.
Electronic Wooden Fish Online
Online electronic wooden fish tool, supporting setting wooden fish color, tapping sound effects, automatic tapping and other parameters.
Geodetic Latitude to Geocentric Latitude Converter Online
Online tool for converting geodetic latitude to geocentric latitude, supporting the conversion between geodetic latitude and geocentric latitude. This tool supports latitude batch conversion, with latitude units supporting degrees, radians, and degrees, and supports selecting or customizing ellipsoid parameters. The conversion result can be downloaded locally.
Coordinate Unit Converter Online
Online coordinate unit conversion tool that supports inputting 2D (XY or BL) coordinates, 3D coordinates (XYZ or BLH), 4D coordinates (XYZT, BLHT), and converting the units of length, angle, or time of the coordinates. This tool supports batch conversion of coordinate units, and the conversion results can be downloaded.
DateTime Type Converter Online
Online datetime type conversion tool, supporting TAI time, UTC time, GPS time (GPST), Beidou time (BDT), Unix timestamp, and local time conversion. This tool supports batch conversion, and the conversion results can be downloaded locally.
Random Roll Call Online
Online random roll call tool, fill out a list, and randomly call. Support setting list grouping, randomly selecting multiple results at once, and allowing multiple parameters such as duplicate extraction.
Batch Image Rotate Online
Online batch image rotation tool, supporting batch rotation of images in jpeg, jpg, webp, png, and svg formats. Supports arbitrary rotation angle settings, and the rotated images can be downloaded locally.
Random Name Generator Online
Online random name generator, generating random names online, supporting dozens of languages such as Chinese, English, French, Japanese, etc. It supports setting gender, number of generated names, surname, first name, and other parameters.
