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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.

Chinese Allegorical Sayings
Chinese allegorical sayings full list, chinese allegorical sayings query online.This tool contains more than 14000 allegorical sayings.

Morse Code Convert Online
Morse Code Convert Online supports encoding text (including Chinese) into Morse code and decoding Morse code into ordinary text. Text supports all unicdoe characters.

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.

JSON5 Beautify / Validator Online
The JSON5 Beautify / Validator Online tool provides online json5 format verification, json5 format, json5 data compression and json5 data beautification functions.

Currency Converter
The Currency Converter tool adopts the latest exchange rate to calculate the exchange rate of RMB into U.S. dollars, euros, Japanese yen and other currencies.

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.
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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.

Coordinate Transformation Parameter Solving Online
Online coordinate transformation parameter solving tool, input a set of known point coordinates, and solve the parameters used for three parameter, four parameter, and seven parameter coordinate transformations. The coordinate transformation method supports the Helmert and Bursa-Wolf models, and the input coordinates support 2D and 3D coordinates, as well as spatial Cartesian and geodetic coordinates.

Local Font Preview Online
Online local font preview tool, open local font files or read locally installed fonts to view the display effect of fonts. Support opening WOFF2, Fonts in WOFF, TTF, and OTF formats.

ITRF Coordinate Transformation Tool Online
Online ITRF Coordinate Transformation Tool: A coordinate transformation utility utilizing ITRF transformation parameters for conversions between ITRF reference frames, supporting epoch conversion via velocity fields. Compatible with over a dozen ITRF frameworks including ITRF2020, ITRF2014, ITRF97, and others. Accepts input coordinates in both geodetic (LBH: Latitude, Longitude, Height) and geocentric Earth-fixed (XYZ) formats.

Pi Digits Query Online
Online PI(π) query tool, supports querying the PI value of the specified number of digits after the decimal point, and supports querying up to 1,000,000 (one million) digits. The result can be copied and downloaded.

Subtitle Format Converter Online
Online subtitle format conversion, support subtitle format lrc,srt,vtt,sbv,ass,ssa,sub,scc,stl,ttml,itt conversion, support batch conversion. Support to set character set encoding and other parameters for subtitle format conversion.