QR Code Generator User Guide

Misosom's QR Code Generator is a free online tool that quickly and easily converts text or URLs into QR codes. You can select various sizes and error correction levels, and download in PNG and SVG formats.

Main Features

🔗 Quick QR Code Generation

Enter text or a URL and a QR code is generated immediately. You can use it simply without complex settings.

📏 Various Size Options

We offer the following size options:

128x128: Small size - suitable for business cards or small prints
256x256: Normal size (default) - suitable for general use
512x512: Large size - suitable for posters or large prints

🛡️ Error Correction Level

You can select an error correction level to prepare for QR code damage or partial obstruction:

L (Low - 7%): Suitable for small QR codes, minimal data capacity
M (Medium - 15%): Default, suitable for general use
Q (High - 25%): Suitable for prints or environments where damage is likely
H (Highest - 30%): Maximum error correction, readable even with severe damage

💾 Download Formats

You can download generated QR codes in the following formats:

PNG: Raster image format, suitable for general use
SVG: Vector image format, does not break when enlarged, optimal for printing

How to Use

Basic Usage

Access the QR Code Generator Page
Click "QR Code Generator" on the main page or directly access the /qr/ URL.
Enter Text or URL
Enter the text or URL you want to convert to a QR code in the input field at the top.
Select Size (Optional)
Select your desired QR code size. The default is 256x256.
Select Error Correction Level (Optional)
Select an error correction level suitable for your use. The default is M (Medium).
Generate QR Code
Click the "Generate QR Code" button and the QR code will be generated and displayed immediately.
Download
You can download the generated QR code in PNG or SVG format.

Advanced Usage

Convert URL to QR Code

Converting a website URL to a QR code makes it easy to access from mobile. Example: https://misosom.com

Error Correction Level Selection Guide

The error correction level determines how much damage a QR code can sustain and still be readable:

L (Low): Suitable for small QR codes, use when data capacity is small
M (Medium): Default setting suitable for most uses
Q (High): Suitable for prints or environments where partial obstruction is expected
H (Highest): For cases requiring maximum error correction, e.g., printing on easily damaged materials

Download Format Selection Guide

PNG Format

Suitable for inserting into websites or documents
Can be opened in common image viewers
Relatively small file size
Quality may degrade when enlarged

SVG Format

Suitable for prints or large sizes
Vector format that doesn't break when enlarged
Optimal for high-quality printing
May not be supported in some older software

Frequently Asked Questions (FAQ)

Q1. How much text can I put in a QR code?

The longer the text, the more complex the QR code becomes, making it harder to scan. We recommend keeping it concise if possible.

Q2. Can I use the generated QR code permanently?

Yes, generated QR codes can be downloaded and used permanently. However, if it includes a URL, it will only work as long as that URL is valid.

Q3. The QR code doesn't work when I scan it.

Please check the following:

Check if the QR code is damaged
Check if the scanning app is up to date
Check if you scanned in sufficient lighting
Check if the QR code size is not too small

Q4. What size should I choose?

Choose according to your use:

Business cards or small prints: 128x128
General use: 256x256 (default)
Posters or large prints: 512x512

Q5. What are the benefits of increasing the error correction level?

The higher the error correction level, the more the QR code can be read even if partially damaged or obscured. However, higher levels make the QR code more complex and may increase its size.

Q6. Should I choose PNG or SVG?

We recommend PNG for inserting into websites or documents, and SVG for prints or large sizes. SVG doesn't break when enlarged, making it suitable for high-quality printing.

Q7. Can I modify the generated QR code?

The generated QR code itself cannot be modified. If modification is needed, you must change the original text and generate a new QR code.

Useful Tips

URL Shortening: When creating a QR code from a long URL, using a URL shortening service can create a cleaner QR code.
Test Scanning: We recommend testing the scan on multiple devices before printing the QR code.
Sufficient Size: When printing, print at a sufficient size to make scanning easy.
Ensure Contrast: There must be sufficient contrast between the QR code and background for good scanning. Use black QR codes on white backgrounds, and white QR codes on black backgrounds.