Learn how to create dynamic QR codes with custom colors and logos using 4Srt. Unlike static QR codes, dynamic QR codes let you change the destination URL anytime without reprinting.
Static vs. Dynamic QR Codes: What's the Difference?
A static QR code encodes a URL directly into its pattern. Once printed, it can never change. If the URL changes or breaks, the QR code is permanently broken.
A dynamic QR code links to a short URL that redirects to your actual destination. This means:
- ✅ You can change the destination anytime — no reprinting
- ✅ You can track scans with analytics
- ✅ You can expire the link after a campaign ends
- ✅ You can A/B test different destinations
4Srt automatically generates a dynamic QR code for every short link you create.
How to Create a QR Code with 4Srt
Step 1: Create Your Short Link
Go to 4srt.me and shorten your URL. Your short link is automatically created with a unique QR code.
Step 2: Open the QR Code Editor
In your dashboard, find the link and click QR button. The QR code editor opens with live preview.
Step 3: Customize Your QR Code
4Srt's Pro plan includes full customization:
- Foreground color — match your brand's primary color
- Background color — transparent or custom
- Logo embedding — center your logo inside the QR pattern
- Shape options — square dots, rounded corners, circles
Step 4: Download and Deploy
Click Download PNG to get a high-resolution file ready for print or digital use.
Best Practices for QR Codes
Size Considerations
- Minimum size: 2cm × 2cm for reliable scanning
- Print at 300 DPI minimum for physical materials
- Add quiet zone: 4 modules of white space around the QR code
Color Contrast
QR scanners need strong contrast between the foreground and background:
- ✅ Dark foreground on light background
- ❌ Light foreground on dark background (many scanners struggle)
- Test with multiple smartphone models before printing
Where to Place QR Codes
QR Codes + Link Analytics = Powerful Combo
Every QR scan is tracked in 4Srt analytics, giving you:
- Scan count by day, week, month
- Geographic data — which cities are scanning your codes
- Device type — iOS vs. Android dominant
- Time of day patterns
This is especially valuable for offline-to-online campaigns: print ads, billboards, trade shows, and in-store displays. You can finally measure the ROI of physical advertising.
Real-World Use Cases
Restaurant & Hospitality
Replace paper menus with QR codes. Update the menu URL anytime without reprinting the QR code.
Event Marketing
Use QR codes on posters and programs. After the event, redirect the QR to the event recording or photo gallery.
Product Packaging
Link to setup guides, tutorial videos, or warranty registration pages. Update the content without updating the physical packaging.
Business Cards
Add a QR code that links to your 4Srt social bio page — a one-page hub with all your professional links.
FAQ
Can I use my own logo in the QR code?
Yes, on the Pro plan you can embed a logo in the center of the QR code. Keep the logo under 30% of the total QR area to ensure scannability.
What happens if I change the destination URL after printing?
Since 4Srt uses dynamic QR codes, changing your short link's destination instantly updates where all existing QR codes point. The printed QR code still works perfectly.
How many scans can a QR code handle?
Unlimited. QR codes don't have scan limits. Your scan analytics capacity depends on your 4Srt plan.
Conclusion
Dynamic QR codes are one of the most versatile tools for bridging your offline and online presence. Combined with 4Srt's analytics, you finally get real data on how physical marketing materials perform.
Create your first dynamic QR code — it's free and takes under a minute.