What is a QR Code?
A QR code (Quick Response code) is a two-dimensional barcode that can store various types of data. Unlike traditional barcodes that only store numbers, QR codes can encode URLs, text, contact information, WiFi credentials, email addresses, phone numbers, and more. QR codes were invented in 1994 by Denso Wave, a Japanese company, and have become ubiquitous in modern digital life.
QR codes are designed to be scanned quickly by smartphones using the camera app. When scanned, the encoded information is instantly accessible without typing, making them perfect for marketing, contact sharing, WiFi access, event registration, and countless other use cases.
How to Generate QR Codes from a Link
Converting a link to QR code is one of the most common uses of a QR code generator. Whether you want to turn a website URL, Google Form, YouTube video, or any other link to QR format, the process is straightforward:
- Copy the URL you want to convert into a QR code.
- Select the URL tab in the qrcode generator above.
- Paste your link into the URL input field.
- Optionally customize the size, colors, and error correction level for your custom QR code.
- Click Generate QR Code to instantly generate QR from your link.
- Download the QR code as PNG or SVG, or copy it to your clipboard.
This is the easiest way to convert any link to QR code, whether it's a product page, social media profile, event registration, or payment link. The QR code will redirect scanners directly to your URL when scanned with any smartphone camera.
How to Create a QR Code for Google Form
Want to create QR code for Google Form? It's one of the most popular uses of a free QR code generator. QR codes make it incredibly easy to share Google Forms for surveys, feedback, event registration, quizzes, and sign-ups. Here's how:
- Open your Google Form and click the Send button.
- Click the link icon to get the shareable URL. Optionally, check "Shorten URL" for a cleaner QR code.
- Copy the Google Form link.
- In this QR code generator, select the URL tab and paste the form link.
- Click Generate QR Code to create QR code free for your form.
- Download or print the QR code and share it on flyers, posters, slides, or any printed material.
Pro tip: Use error correction level Q or H when printing QR codes for Google Forms on physical materials. This ensures the code remains scannable even if partially damaged or printed at small sizes. You can create QR code for Google Forms, Microsoft Forms, Typeform, SurveyMonkey, and any other online form platform the same way.
Create Custom QR Codes with Colors and Branding
A custom QR code generator lets you go beyond the standard black-and-white design. With this tool, you can create QR code free with your brand colors, making your QR codes more visually appealing and recognizable. Here's how to make the most of the customization options:
- Foreground color: Change the QR code pattern from black to any color that matches your brand. Dark colors on light backgrounds work best for scanability.
- Background color: Set the background to white, light grey, or any light color. Avoid dark backgrounds as they reduce scan reliability.
- Size: Choose from 200px to 1000px. Larger sizes are better for print materials, while 300-400px works well for digital use.
- Error correction: Higher levels (Q or H) allow more of the QR code to be damaged while remaining scannable. This is useful if you plan to add a logo overlay.
Remember: while custom QR codes look great, always maintain sufficient contrast between foreground and background colors. Test your custom QR code with multiple devices before printing.
QR Code Error Correction Levels
QR codes include error correction data that allows them to be scanned even if partially damaged or obscured. There are four error correction levels:
- L (Low): ~7% of the code can be damaged and still be readable. Best for clean environments with high-quality printing.
- M (Medium): ~15% error correction. This is the default and works well for most use cases.
- Q (Quartile): ~25% error correction. Good for QR codes that may be partially covered or printed on textured surfaces.
- H (High): ~30% error correction. Maximum resilience, ideal for QR codes that will be printed small, on rough surfaces, or may be partially obscured.
Higher error correction levels create denser QR codes (more modules), so choose the lowest level that meets your needs for the best scanning performance.
QR Code Best Practices
- Size matters: QR codes should be at least 2×2 cm (0.8×0.8 inches) for reliable scanning. Larger is better, especially for print materials.
- Contrast is critical: Ensure high contrast between the QR code pattern (foreground) and background. Black on white is ideal, but any dark color on a light background works.
- Quiet zone: Leave white space (quiet zone) around the QR code equal to at least 4 modules. This helps scanners identify the code boundaries.
- Test before printing: Always test your QR code with multiple devices and scanning apps before printing large quantities.
- Consider the context: For print materials, use higher error correction (Q or H). For digital displays, M is usually sufficient.
- Keep URLs short: Shorter URLs create simpler QR codes that scan faster and are more reliable.
Common QR Code Use Cases
- Marketing: Link to product pages, landing pages, promotional offers, or social media profiles.
- Contact sharing: vCard QR codes that add contact information directly to phone contacts.
- WiFi access: QR codes that automatically connect devices to WiFi networks without typing passwords.
- Event registration: QR codes linking to Google Forms, Eventbrite, or custom registration pages.
- Restaurant menus: Digital menus accessible via QR codes, especially popular post-COVID.
- Payment: QR codes for mobile payments, cryptocurrency addresses, or payment links.
- App downloads: QR codes linking directly to app store pages for mobile apps.
- Documentation: QR codes on products linking to manuals, specifications, or support pages.
QR Code File Formats
This tool supports two download formats:
- PNG: Raster image format, best for web use, social media, and digital displays. PNG files are pixel-based and maintain quality at their original size.
- SVG: Vector image format, best for print materials and when you need to scale the QR code. SVG files are resolution-independent and can be scaled to any size without quality loss.
For most digital use cases, PNG is recommended. For print materials (business cards, flyers, posters), SVG is better as it ensures crisp printing at any size.