What is error correction and which level should I use?

Error correction allows a QR code to be scanned even if parts are damaged or obscured. Level L (7%) is fine for digital displays. Level M (15%) works for most printed materials. Level H (30%) is best for codes that may be partially covered or worn.

What is the maximum content length for a QR code?

QR codes can encode up to about 4,000 alphanumeric characters. However, longer content creates denser codes that are harder to scan. For best results, keep URLs and text as short as possible.

Can I add a logo to my QR code?

Adding a logo to the center of a QR code is possible if you use high error correction. The error correction compensates for the obscured pixels. Keep the logo small relative to the overall QR code size.

How to Generate a QR Code

3 min readDeveloper

QR codes encode URLs, text, contact information, and more into a scannable image. This guide shows you how to generate QR codes for any purpose using a free browser tool, with options to customize size, colors, and error correction.

Quick Steps

1
Open QR Code Generator
Go to the QR Code Generator on Toolin.
2
Choose content type
Select URL, text, WiFi, or another format.
3
Enter your content
Paste the URL or type the text to encode.
4
Download the image
Generate and save the QR code as PNG or SVG.

QR Code Generator

Generate customization QR codes

Open Tool

Step-by-Step: Create a QR Code

Open the QR Code Generator

Navigate to the QR Code Generator on Toolin.

Select the content type

Choose what to encode: URL, plain text, WiFi credentials, email, phone number, or other formats.

Enter your content

Type or paste the URL, text, or other data you want to encode in the QR code.

Customize appearance

Optionally adjust the size, foreground and background colors, and error correction level.

Download the QR code

Click Generate and download the QR code as a PNG or SVG image.

Tips for Effective QR Codes

Keep the encoded content as short as possible. Longer content creates denser QR codes that are harder to scan, especially at small sizes. Use high error correction if the QR code will be printed on materials that may get damaged. Always test the QR code with multiple devices before printing. Ensure sufficient contrast between the foreground and background colors for reliable scanning.

Common QR Code Uses

Link to websites, landing pages, or app download pages.
Share WiFi credentials for guest access.
Encode contact information as a vCard.
Create event tickets with unique identifiers.
Link to restaurant menus, product information, or promotional offers.

Try QR Code Generator Now — Free, No Sign-up

Frequently Asked Questions

What is error correction and which level should I use?: Error correction allows a QR code to be scanned even if parts are damaged or obscured. Level L (7%) is fine for digital displays. Level M (15%) works for most printed materials. Level H (30%) is best for codes that may be partially covered or worn.
What is the maximum content length for a QR code?: QR codes can encode up to about 4,000 alphanumeric characters. However, longer content creates denser codes that are harder to scan. For best results, keep URLs and text as short as possible.
Can I add a logo to my QR code?: Adding a logo to the center of a QR code is possible if you use high error correction. The error correction compensates for the obscured pixels. Keep the logo small relative to the overall QR code size.