QR Code Generator
Create QR codes for URLs, text, or contact information.
Scan this QR code with a smartphone camera or QR code reader app
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About QR Codes
What are QR Codes?
QR (Quick Response) codes are two-dimensional barcodes that can store information like URLs, text, contact information, and more. They can be scanned using smartphone cameras or QR code reader apps.
Error Correction Levels
- Low (L): 7% of data can be restored if damaged
- Medium (M): 15% of data can be restored if damaged
- Quartile (Q): 25% of data can be restored if damaged
- High (H): 30% of data can be restored if damaged
Higher error correction levels make QR codes more reliable but also more dense.
Common Use Cases
- Website URLs to direct users to online content
- Contact information (vCards) for easy contact sharing
- Wi-Fi network credentials for quick connection
- Payments and financial transactions
- Event tickets and boarding passes
- Product information and inventory tracking
- Augmented reality experiences
Frequently Asked Questions
What is a QR code and how does it work?
A QR (Quick Response) code is a two-dimensional barcode that stores information in both horizontal and vertical patterns. When scanned with a smartphone camera or QR reader app, it quickly provides access to the encoded information, which can be a website URL, text, contact information, Wi-Fi credentials, or other data. QR codes work by using a pattern of black and white squares that represent binary data.
What types of information can I encode in a QR code?
You can encode various types of information in a QR code, including: website URLs, plain text messages, contact information (vCard), Wi-Fi network credentials, email addresses, phone numbers, SMS messages, geographic locations, and calendar events. Our QR code generator currently supports text and URL encoding, which covers most common use cases.
What is error correction in QR codes and which level should I choose?
Error correction allows QR codes to be readable even if they're partially damaged or obscured. There are four levels: Low (L) - 7% recovery, Medium (M) - 15% recovery, Quartile (Q) - 25% recovery, and High (H) - 30% recovery. Choose M (default) for normal use, L for clean environments, Q for outdoor use, or H when damage is likely or for small printed codes.
How do I customize the appearance of my QR code?
Our tool allows you to customize your QR code by changing the size (from 100px to 1000px), selecting different colors for both the foreground (dark) and background (light) elements, and choosing the error correction level. All changes are shown in real-time, allowing you to create a QR code that matches your branding or design needs.
What size QR code is best for different uses?
The ideal size depends on how and where the QR code will be used. For printing on business cards, a minimum of 2 cm (about 250px for digital use) is recommended. For posters or marketing materials that will be scanned from a distance, larger sizes are better. The tool allows sizes from 100px to 1000px, giving you flexibility for various applications.
Can I change the colors of my QR code or will that make it unscannable?
Yes, you can change both the foreground and background colors of your QR code using our tool. However, it's important to maintain high contrast between the two colors to ensure scanability. Dark colors on a light background generally work best. Extremely low contrast combinations (like yellow on white) may make the QR code difficult or impossible to scan.
How do I download the generated QR code?
Once you've generated your QR code, simply click the "Download QR Code" button below the customization options. This will save the QR code as a PNG image file to your device. The downloaded image will have the exact size, colors, and error correction level you selected.
Is there a limit to how much text I can encode in a QR code?
Yes, QR codes have capacity limits based on the type of data and error correction level. For alphanumeric characters (letters and numbers), a standard QR code can store approximately 4,296 characters with low error correction, or about 1,273 characters with high error correction. For longer text, the QR code becomes more dense and may be harder to scan, particularly on some devices.
Are the QR codes generated by this tool permanent?
Yes, the QR codes you create with our tool are static and permanent. Once generated and downloaded, they will continue to point to the same information indefinitely. Since all processing happens locally in your browser, we don't store your QR codes on our servers, and they won't expire or change. For dynamic QR codes that can be updated after creation, you would need a specialized dynamic QR code service.
Is my data private when I use this QR code generator?
Yes, your data is completely private when using our QR code generator. All processing happens entirely within your browser - no data is sent to our servers. The text or URL you enter, along with your customization choices, never leaves your device during the QR code generation process. This makes our tool suitable for generating QR codes containing sensitive information.
How can I test if my generated QR code works correctly?
To test your QR code, scan it with your smartphone's camera app or a QR code reader app. Most modern smartphones have built-in QR code scanning capability in their default camera apps. Simply point your camera at the QR code on your screen (or at a printed version if you've printed it), and you should be prompted to open the encoded URL or view the encoded text.
Can I create QR codes for Wi-Fi network access?
While our current implementation focuses on text and URL encoding, you can manually create a Wi-Fi QR code by entering the information in a specific format: WIFI:S:[SSID];T:[Encryption type];P:[Password];;. Replace [SSID] with your network name, [Encryption type] with WPA, WEP, or leave blank for open networks, and [Password] with your network password. For example: WIFI:S:MyHomeNetwork;T:WPA;P:mypassword123;;