OnlineTool.me

QR Pattern Generator Demo

Enter text and image size → Get a downloadable QR-style pattern demo—not a scannable QR code.

Create a QR-Style Pattern Demo

Previewing the planned generator workflow? Enter sample text and an image size to create a decorative, non-scannable pattern.

Your decorative pattern preview will appear here
Demo status: No standards-compliant QR data is encoded; the output is decorative only.

How to Use QR Pattern Generator Demo

1

Enter Your Content

Type or paste the URL, text, or WiFi details you want to encode into the QR code.

2

Customize (Optional)

Adjust the size, color, and error correction level of your QR code.

3

Generate

Click the generate button to instantly create your custom QR code.

4

Download

Save your QR code as a PNG or SVG file for printing or digital sharing.

QR Pattern Generator Demo Features

  • Creates a repeatable visual pattern from entered text
  • Supports canvas sizes from 100 to 500 pixels
  • Draws the result locally in an HTML canvas
  • Downloads the displayed prototype as a PNG

Common Use Cases

Interface preview

Review the text, size, result, and download flow planned for a future standards-compliant QR generator.

Decorative prototype

Create a QR-like placeholder for a wireframe or design mockup when the asset is clearly identified as non-scannable.

Limits and Important Notes

How the QR-Style Pattern Is Drawn

The demo adds the numeric character codes in the entered text to produce a seed. It draws three finder-like shapes on a 25-by-25 grid.

For remaining cells, a deterministic sine-based calculation decides whether each square is black or white. The error-correction selection is not part of that calculation.

Formula

Pattern seed = sum of the entered characters' numeric codes

Example

Entering “https://onlinetool.me/” twice at the same size produces the same prototype pattern. A real QR scanner will not decode that pattern into the URL.

  • The output is not a valid or scannable QR code.
  • The Error Correction setting is displayed but is not used by the current drawing logic.
  • Color customization, Wi-Fi encoding, SVG export, and QR standards compliance are not implemented.

Related Tools

QR Code Reader Interface Demo

Upload a QR image → Preview the planned decode workflow; scanning is not implemented yet.

Word Counter and Character Counter

Type or paste text → Get live word, character, non-space, and sentence counts.

Frequently Asked Questions