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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.
Stopwatch Online
Online stopwatch timer supports online stopwatch timing, millisecond time, pause, mark and download functions.
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.
Make Basic Pie Chart Online
Make pie charts online for free. Make pie chart online, support filling in data online or uploading excel files, and support exporting the generated pie chart to JPG, PNG and PDF files.
Schulte Table Attention Test Online
Online Schulte table attention test, generate a table with 25 small squares, shuffle the numbers from 1 to 25, and fill them in the table for attention testing or training. The generated Schulte table supports downloading to the local location.
Text Shuffling Order Tool Online
Online text shuffle order tool, support word by word or line by line to shuffle the input text, the shuffling mode can be set to shuffle all characters or only text (do not shuffle punctuation, etc), processing results support download to the local.
Character Frequency Statistics Online
Online character frequency statistics tool, which calculates the frequency of individual letters and words in text. Frequency statistics support English and Chinese characters.
JavaScript Regular Expression Test
JavaScript regular expression (JS regular expression) online test, providing JavaScript regular expression online matching and replacement functions. By controlling parameter settings, you can control the behavior of regular expressions, such as ignoring case, global mode, multiline mode, etc.
Chinese Zodiac Query Online
Online Chinese zodiac age query tool, which can query Chinese zodiac signs based on age,query age base on chinese zodiac, and year-zodiac reference table.
TeX/LaTeX Mathematical Formula to Image Online
The online TeX/LaTeX mathematical formula to image tool, enter TeX/LaTeX mathematical formula, convert the formula to SVG image, and support downloading the generated mathematical formula image to the local computer.
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.
Latest Online
UUID Format Convert and Verify Online
Online UUID conversion and verification tool, supporting the conversion of UUIDs in string, hex, binary, and base64 formats. Support verifying whether the input string is a valid UUID and the corresponding UUID version.
Shield Badge Generator Online
An online tool for creating shield badges, which supports setting parameters such as label, color, style, and adding logos. It also supports downloading as SVG, PNG, JPEG, or WebP images.
Template Data Generator Online
An online template data generation tool that generates string/JSON/binary HEX format data based on a specified format or protocol. The data field supports randomly generating integers, floating-point numbers, strings, and supports field references and JavaScript programming calculations.
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.