Standalone ClassWiz QR Code parser, no CASIO server needed.

GitHub: https://github.com/CalcWorld/ClassWizQR

Online Demo: https://cwqr.pages.dev

API Documentation: https://cwqr.pages.dev/api

A detailed explanation of how QR works on ClassWiz (Chinese Only)

ClassWiz QR 功能原理详解

npm install classwiz-qr

import { ClassWizQR, parseUrl } from 'classwiz-qr';

• Internationalization (i18n) implemented
• Optimized adaptations for specific calculator models, such as JP models
• Support for ClassWiz EX, ClassWiz CW and ClassWiz CW 2nd edition series calculators
• Detailed information on the calculator model, settings, and active modes or errors
• Natural display input and output rendered as LaTeX formulas in Calculate, Complex, Verify and other modes
• LaTeX and tabular representation of equations and results in Equation, Inequality, and Ratio modes
• LaTeX and tabular representation of vector and matrix data
• Data entered in Spreadsheet, Table, Distribution, and Statistics modes, with CSV export support
• Defined functions, table range and variables in Table mode
• Supports showing Algorithm mode commands in LaTeX, plain text, and Scratch block formats

See https://github.com/CalcWorld/ClassWizQR/wiki

Send the decoded ClassWiz QR URL to the hosted API as JSON:

curl --request POST 'https://cwqr.pages.dev/api' \
  --header 'Content-Type: application/json' \
  --data '{
    "url": "http://wes.casio.com/math/index.php?q=I-234F+U-000000000000+M-X100000000+S-05099",
    "lang": "en"
  }'

The response uses a consistent envelope: {"code":"success","data":{...}} on success, or {"code":"error","msg":"..."} when parsing fails. The fields inside data depend on the calculator mode. Supported language codes include en, zh, fr, and vi.

You can also replace http://wes.casio.com in a QR URL with https://cwqr.pages.dev and request JSON directly:

curl 'https://cwqr.pages.dev/math/index.php?q=I-234F+U-000000000000+M-X100000000+S-05099' \
  --header 'Accept: application/json' \
  --header 'Accept-Language: en'

The /math/, /ncal/, and /calc/ paths accept GET requests. Browsers normally send an Accept header beginning with text/html, so opening one directly redirects to the visual parser. Set Accept: application/json explicitly to receive JSON.

See the API documentation for request parameters and response details.

• AGPL-3.0-or-later