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QR Code Generator

Developer Tools

Text, links and WiFi to QR code with PNG download

Quick Answer

QR Code Generator: Text, links and WiFi to QR code with PNG download. Error correction: L 7% / M 15% / Q 25% / H 30%.

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How to Use

  1. Paste or type content: drop code/text into the QR Code Generator or fill the parameters.
  2. Choose mode/options: switch format, rules or processing as needed.
  3. Live output: results appear instantly — nothing is submitted, data stays in your browser.
  4. One-click copy: copy the output straight into your development environment.

Key Points

  • QR Code Generator is a free online developer tool — open and use, no sign-up.
  • All calculations run locally in your browser; your data never leaves the device.
  • Key capability: Text, links and WiFi to QR code with PNG download.
  • Results come with formulas and reference tables so you can verify every number.

Formula & How It Works

QR Code (ISO/IEC 18004)

Error correction: L 7% / M 15% / Q 25% / H 30%
Versions 1–40 (each +4 modules per side); V40-L holds 4296 chars
WiFi payload: WIFI:T:WPA;S:name;P:password;;

FAQ

How do I use the QR Code Generator?
Open the page and fill in the input fields — results update automatically. Text, links and WiFi to QR code with PNG download.
Are the results accurate?
Yes. Standard formulas and conversion factors are used and verified.
Is it free? Do I need to sign up?
Completely free. No registration, login or download required.
Does it work on mobile?
Yes. The responsive design works on phones, tablets and desktops.
Is my data saved?
No. Everything runs locally in your browser.

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Source & Updates

Based on RFC 4648, ECMA-262 and related specifications. Last updated: 2025-07

Last updated:

Formulas and content on this page are reviewed by the YiJianSuan team. For reference only — official sources prevail.

Cite this page: YiJianSuan. QR Code Generator[EB/OL]. https://www.yijiansuan.com/en/c/dev/qr-code

Results provided by this tool are for reference only and do not constitute professional advice.