QR Code Generator
Generate QR codes for free from any text or URL. Customize the size, foreground and background colors, and download your QR code as a PNG image. Perfect for sharing links, contact information, Wi-Fi credentials, and more.
What Is a QR Code?
A QR Code (Quick Response Code) is a two-dimensional barcode that can be scanned by smartphones and QR code readers. Originally developed in 1994 by Denso Wave for tracking automotive parts, QR codes have become widely used for sharing information quickly and easily.
QR codes can encode various types of data:
- URLs: Link to websites, landing pages, or social media profiles.
- Contact Information: vCards with phone numbers, email addresses, and names.
- Wi-Fi Credentials: Network names and passwords for easy connection.
- Text: Any text message or information.
- Event Details: Calendar events with dates, times, and locations.
How Does the QR Code Generator Work?
The generator uses the QRCode.js library, a lightweight JavaScript library that creates QR codes without any external dependencies. It works by:
Step 1: You enter the text or URL you want to encode.
Step 2: The library converts your text into a binary format using QR encoding standards.
Step 3: Error correction data is added to help the QR code survive damage or distortion.
Step 4: The code is rendered as a canvas element with your chosen size and colors.
Step 5: You can download the QR code as a PNG image.
The QR code's error correction level determines how much of the code can be damaged or obscured and still be readable. Higher levels (H) are more robust but reduce the amount of data that can be stored.
Why Use This QR Code Generator?
- Free & Unlimited: Generate as many QR codes as you need, at no cost.
- Customizable: Choose the size, foreground color, and background color.
- Downloadable: Save your QR code as a PNG image for printing or sharing.
- Multiple Error Correction Levels: Choose the right balance between capacity and durability.
- Private: All generation happens in your browser — no data is sent to a server.
Common QR Code Uses
- Business Cards: Share contact information with a simple scan.
- Restaurant Menus: Link to digital menus for contactless dining.
- Product Packaging: Provide product information, instructions, or promotional content.
- Event Tickets: Generate scannable tickets for events and venues.
- Wi-Fi Sharing: Allow guests to connect to your network without typing a password.
- Social Media: Link to your profiles for easy following.
❓ QR Code Generator FAQ
What is a QR code?
A QR code (Quick Response code) is a two-dimensional barcode that can be scanned by smartphones to quickly access information, such as URLs, text, contact details, or Wi-Fi credentials.
How do I scan a QR code?
Most modern smartphones have a QR code scanner built into the camera app. Simply open your camera, point it at the QR code, and tap the notification that appears. You can also use dedicated QR code scanner apps.
What data can I encode in a QR code?
You can encode URLs, text, email addresses, phone numbers, SMS messages, contact information (vCards), Wi-Fi credentials, calendar events, and more. The maximum capacity depends on the version and error correction level.
How much data can a QR code hold?
A QR code can hold up to 4,296 alphanumeric characters, 7,089 numeric characters, or 2,953 bytes of binary data. The actual capacity depends on the version and error correction level. Higher error correction reduces capacity.
What is error correction in QR codes?
Error correction allows QR codes to remain readable even if they are partially damaged or obscured. There are four levels: L (7% recovery), M (15% recovery), Q (25% recovery), and H (30% recovery). Higher levels provide more durability but reduce capacity.
What is the difference between a QR code and a barcode?
A QR code is a two-dimensional barcode that can store significantly more data than a traditional one-dimensional barcode. QR codes can also be scanned from any angle, while traditional barcodes must be scanned in a specific orientation.
Can I customize the colors of my QR code?
Yes. You can change the foreground color (the dark modules) and the background color. However, for best scanning results, it's recommended to use high contrast colors (e.g., dark on light). This calculator allows you to choose any colors you like.
How do I download my QR code?
After generating your QR code, click the "Download PNG" button. This will save the QR code as a PNG image file to your device. You can then print it, share it, or use it in your designs.
Is this QR code generator free?
Yes, this QR code generator is completely free to use. There are no limits on the number of codes you can generate, and no registration is required.
Are my QR codes private?
Yes. All QR code generation happens in your browser using JavaScript. No data is sent to a server, so your information remains private and secure.
What size should I make my QR code?
The size depends on how you plan to use it. For digital use (websites, emails), 200-300 pixels is usually sufficient. For print (flyers, business cards), choose a larger size and ensure the code is at least 1-2 inches (2.5-5 cm) when printed.
Can I use QR codes for marketing?
Yes. QR codes are widely used in marketing campaigns to direct users to websites, promotions, landing pages, and social media profiles. You can track scans by using URL shorteners with analytics.
What is a dynamic QR code?
A dynamic QR code allows you to change the destination URL after the code has been printed. This is useful for campaigns where you might want to redirect users to different content over time. This generator creates static QR codes, which cannot be changed once created.
What is the best error correction level for my QR code?
For most applications, Medium (M) or Quartile (Q) provide a good balance of capacity and durability. Use High (H) if your QR code will be printed on a surface that might get damaged or obscured. Use Low (L) if you need maximum data capacity.
Can I add a logo to my QR code?
This generator does not support adding logos directly. However, you can download the QR code and overlay a logo using image editing software. Keep in mind that adding a logo may reduce the readability of the QR code.
How do I create a QR code for Wi-Fi?
Enter the Wi-Fi credentials in the following format: WIFI:S:NetworkName;T:WPA;P:Password;;. For example: WIFI:S:MyNetwork;T:WPA;P:MyPassword;;. Users scanning the code can then connect to your network automatically.
What is the difference between a QR code and a data matrix code?
Both are two-dimensional barcodes, but QR codes are more commonly used for consumer-facing applications. Data matrix codes are smaller and often used in industrial applications, such as marking small electronic components.
How do I create a QR code for a vCard?
Enter your contact information in the vCard format: BEGIN:VCARD\nVERSION:3.0\nFN:John Doe\nTEL:+1234567890\nEMAIL:[email protected]\nEND:VCARD. The calculator will encode this into a QR code that can be scanned to save the contact.
Can I use this QR code generator on my phone?
Yes. This QR code generator is fully responsive and works on smartphones, tablets, and desktop computers. The interface adapts to your screen size for easy use on any device.
What is the maximum QR code version supported?
This generator supports all QR code versions up to 40 (the maximum), which can hold up to 177 × 177 modules. The version is automatically selected based on the data you enter and the error correction level you choose.