Chartixo
Everyday Tools

QR Code Generator

Generate custom, high-resolution QR codes for URLs, text, WiFi, and contact cards without server tracking.

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Runs 100% locally in your browser. Zero data transmission.

How It Works & Underlying Concept

A Quick Response (QR) code is a two-dimensional matrix barcode invented in 1994. It consists of black squares arranged in a square grid on a white background, readable by smartphone cameras to quickly open websites or connect to networks.

Mathematical Formula / RuleEncodes binary data into standard ISO/IEC 18004 Reed-Solomon error correction matrices.
Quick Instructions
1Enter your target URL or text into the input field.
2Customize colors or size if desired.
3Preview the QR code immediately.
4Click 'Download PNG' to save the code to your device.

Key Capabilities

  • Create QR codes for URLs, plain text, email, and phone numbers
  • Adjustable pixel size and contrast colors
  • Download directly as PNG image
  • Pure client-side generation: your URLs and text are never sent to external servers
Real-World Example

Restaurant Table Menu Link

A cafe owner wants patrons to view their digital menu at 'https://example-cafe.com/menu'.

Step 1:Enter the website URL into the input field.
Step 2:The QR code renders immediately on screen.
Step 3:Click 'Download PNG' and print the code for tabletop stands.
Result: Customers scan the printed code with their smartphones to open the menu instantly.
Technical Notes & Limits
  • Longer text strings require denser QR matrices which can be harder to scan at small physical print sizes.

Frequently Asked Questions

Do these QR codes ever expire?▾
No. These are static QR codes that encode your URL or text directly into the barcode pattern. They never expire and do not redirect through third-party servers.
Is there any scan limit?▾
None. You can scan the generated QR codes unlimited times without any fees or accounts.

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