QR Code Generator

What is a QR Code?

A QR code (Quick Response code) is a type of two-dimensional barcode that can store significantly more data than traditional barcodes. Originally invented in 1994 by Denso Wave for tracking automotive parts, QR codes have become ubiquitous in marketing, payments, ticketing, and information sharing. Modern smartphones can scan QR codes natively using their built-in camera apps.

How to Generate a QR Code

1. Enter your text, URL, or data in the input field above.
2. Choose your preferred size (200px to 600px).
3. Select an error correction level (Medium is recommended for most uses).
4. Click "Generate QR Code" to create your code.
5. Click "Download PNG" to save the image to your device.

Understanding Error Correction Levels

QR codes use Reed-Solomon error correction, which allows them to be scanned even when partially damaged or obscured. The four levels are:

• Level L (Low): Recovers up to 7% of data. Smallest file size, best for clean environments.
• Level M (Medium): Recovers up to 15% of data. Recommended default for most use cases.
• Level Q (Quartile): Recovers up to 25% of data. Good for codes that may be printed on uneven surfaces.
• Level H (High): Recovers up to 30% of data. Best for outdoor use, product packaging, or when adding a logo overlay.

Popular Uses for QR Codes

• Website Links: Direct users to your website, landing page, or social media profile.
• WiFi Access: Share WiFi network credentials without revealing the password.
• Contact Information: Create vCard QR codes that add contacts directly to a phone.
• Payments: Many payment systems use QR codes for quick, contactless transactions.
• Marketing: Track campaign performance by linking to unique URLs.
• Inventory: Track products, assets, and documents in warehouses and offices.

Frequently Asked Questions

Is there a limit to how much data a QR code can store?

Yes. The maximum capacity depends on the error correction level and the type of data. For alphanumeric text at Level M, a standard QR code can store up to 4296 characters. For URLs, practical limits are around 300-500 characters before the code becomes too dense to scan reliably.

Will my QR code expire?

No. Static QR codes generated by this tool never expire. They contain the data directly encoded in the pattern. However, if the URL you encode changes or becomes inactive, the QR code will no longer lead to a valid destination.

Can I add a logo to my QR code?

You can overlay a logo on a QR code if you use a high error correction level (Level H). The logo should cover no more than 30% of the code area and should not obscure the three corner position markers. Always test the code after adding a logo.

Are QR codes secure?

QR codes themselves are just data containers and are not inherently malicious. However, they can link to malicious websites. Always be cautious when scanning QR codes from unknown sources, and check the URL before visiting.

Do I need to pay to use this generator?

No. This QR code generator is completely free to use with no watermarks, no registration, and no limits on the number of codes you can create.