QR Code Generator
Generate QR codes from URLs, text, or any data. Customizable size and color. Free, no sign-up needed.
About the QR Code Generator
Generate high-quality QR codes instantly for any URL, text, Wi-Fi credentials, or contact information. Our QR code generator allows full customization of size (100 to 500 pixels) and colors, ensuring your QR codes match your brand. Download your generated QR code as a PNG image, ready for printing or digital use. No watermark, no sign-up, completely free.
What Is QR Code Generator?
A QR (Quick Response) code is a two-dimensional matrix barcode invented in 1994 for tracking automotive parts. Unlike a traditional one-dimensional barcode that stores data only horizontally, a QR code stores data both horizontally and vertically in a grid of black and white modules, allowing it to hold up to several thousand alphanumeric characters. The code also embeds built-in error correction (Reed-Solomon), so a damaged or partially obscured code can still be scanned. Modern phone cameras decode QR codes natively, which is why they now appear everywhere — on product packaging, restaurant menus, business cards, posters, and payment screens. The content encoded can be a plain URL, plain text, a phone number, an SMS, a vCard contact, or a Wi-Fi network credential string.
How to Use
- Enter your URL, text, or data into the input field above.
- Adjust the size slider (100 to 500 pixels) to set the QR code dimensions.
- Optionally customize foreground and background colors using the color pickers.
- Click 'Generate QR Code' to create your QR code on the canvas.
- Click 'Download PNG' to save the QR code image to your device.
Common Use Cases
- Linking printed flyers, posters, and packaging to a landing page
- Sharing Wi-Fi network credentials so guests can connect by scanning
- Adding a scannable contact card (vCard) to business cards and resumes
- Creating restaurant menus or event check-in links that open on mobile
- Embedding warranty or product traceability information on labels
Tips & Best Practices
- QR codes can store URLs, plain text, phone numbers, and Wi-Fi login credentials.
- For print use, set the size to 300px or larger for best scanning reliability.
- Dark foreground on light background provides the best contrast for scanning.
- You can test your QR code by scanning it with your phone's camera before downloading.
Frequently Asked Questions
Do these QR codes expire?
No. The QR code encodes your data directly into the image — it does not reference any server or short-link service. Once generated and downloaded, it will scan forever, as long as the content it points to (such as a URL) still exists.
Can I use a custom brand color?
Yes. The foreground and background colors are fully customizable. For reliable scanning, keep a high contrast (a dark foreground on a light background) and avoid inverting the colors, since most scanners expect dark modules on a light background.
How much data can a QR code hold?
Up to roughly 7,000 numeric characters, 4,000 alphanumeric characters, or 2,900 bytes of binary data, depending on the error-correction level. Longer content produces a denser code that is harder to scan, so prefer short URLs where possible.
Will the QR code work without internet?
Scanning works offline, but the action depends on the content. A plain-text or Wi-Fi QR code works entirely offline, while a URL QR code needs an internet connection to open the destination page.
This qr code generator runs entirely in your browser. No data is uploaded to any server. Your privacy is completely protected.
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