“Everyone says I should add a QR code to my flyer or business card, but I have no idea how to make one.”
QR codes have become an everyday technology, appearing on flyers, business cards, posters, and product packaging. In this article, we explain how to create QR codes for free, from the basics to use-case tips and important notes.
What is a QR code?
A QR code (Quick Response code) is a two-dimensional barcode that stores information in a pattern of black and white squares. Scanning it with your smartphone camera instantly opens a URL or delivers text information.
- No dedicated app needed - standard smartphone cameras work
- Holds more data than a traditional barcode
- Includes error correction, so it works even when slightly damaged or dirty
Common uses: directing people to websites, Wi-Fi credentials, contact information, event registration, and mobile payments.
What can you put in a QR code?
Here are the most common types of information you can encode:
| Type | Example | What happens when scanned |
|---|---|---|
| URL | Homepage, landing page | Opens the page in a browser |
| Text | Messages, notes | Displays the text directly |
| Wi-Fi | SSID and password | Shows the Wi-Fi connection screen |
| Contact | Name, phone, email | Opens the contact-saving screen |
Embedding a URL is by far the most common use case. Print a QR code on your flyer or poster, and scanned visitors land directly on your web page.
Practical tips for creating QR codes
1. Shorten your URL first
QR codes become denser (smaller modules) as more information is encoded, which reduces scan reliability. If you’re printing, shorten the URL first. Options include:
- A short URL on your own domain (recommended)
- A URL shortener service such as bit.ly
2. Choose the size based on scanning distance
| Print format | Recommended QR size | Typical scanning distance |
|---|---|---|
| Business card / flyer | 2cm+ | 10-30cm |
| Poster | 5cm+ | 1-3m |
| Billboard / outdoor | 10cm+ | 3-10m |
“About 2cm for business cards, 5cm or more for posters” is a good guideline. Too small, and scanning will fail.
3. Mind the color and contrast
QR codes are easiest to scan when there is strong contrast between the background and the modules.
- “White background + black modules” is the most reliable combination
- For brand colors, use dark modules on a light background
- Dark backgrounds or light modules are common causes of scan failures
Note: Backgrounds as dark as the modules, transparent backgrounds, and printing on glossy paper all cause scan errors. Always test-scan with your phone before printing.
4. Can I use QR codes commercially?
QR codes have no patent restrictions - commercial use is completely free. You can print your QR codes on products and flyers for marketing purposes.
Pro tip: Point your QR code at a URL you control (a short link or a landing page you can update). That way, you can change the destination without recreating the QR code - ideal for social profiles and seasonal campaigns.
How to create QR codes for free
No software installation needed. The Tools Hub QR code generator lets you create one in your browser in under a minute.
How to use it (3 steps)
Enter your content
Paste the URL or text you want to encode. Japanese text works as-is.
Adjust size and colors
Choose a size from 128 to 1024px and customize the foreground and background colors. For print, we recommend 512px or larger.
Download
Check the preview, confirm it scans correctly, then download as a PNG image.
Tool mentioned in this article
QR Code Generator
Free, no sign-up, runs entirely in your browser. Customize colors and sizes freely.
Summary
- QR codes are two-dimensional codes that carry URLs or text, scannable with standard smartphone cameras
- Shorten your URL and match the size to the scanning distance before printing
- White background + black modules scan most reliably; if using colors, keep strong contrast
- Commercial use is free. Point your QR code at content you may want to update, like social profiles or campaigns
- Tools Hub lets you create one for free in your browser in under a minute
A QR code lasts a long time once created - it keeps working across print and digital media. Try making your first one with this guide.
FAQ
Is it free to create QR codes?
Yes. The Tools Hub QR code generator is completely free with no sign-up required, and commercial use of the generated codes is allowed.
Can I embed Japanese text?
Yes. Japanese text and URLs are encoded in UTF-8 and scan correctly.
Will it scan correctly when printed?
Choose 512px or larger for print, and use a white background with dark modules. Test-scan with your phone before printing to be sure.
Can I change the destination without recreating the code?
Not directly. If you may need to change the destination later, point your QR code at a short link or a landing page you control, so you can update the target without recreating the code.