Feature
Dynamic QR Codes: Print Once. Update Forever.
Create dynamic QR codes you can update anytime without reprinting. Change the destination URL, redirect schedule, and content in real time.
What Makes a QR Code "Dynamic"
A static QR code encodes your destination URL directly into its pixel pattern. Once printed, it is permanent. If the URL changes or goes down, the code is dead. A SMLLR dynamic QR code encodes a short, unique SMLLR identifier instead. This identifier is a pointer to a URL stored in our database. When someone scans the code, our system looks up the current destination and redirects in milliseconds. You control the destination from your dashboard — forever, for free, with no reprinting required.
- Change the destination URL as many times as you want
- No reprinting ever — the physical code stays the same
- Redirect to seasonal campaigns, new products, or updated information
- Set expiry dates and scan limits for promotional codes
- Fallback URLs ensure the code always leads somewhere
- Redirects happen in under 200ms via our global edge network
The Business Case for Dynamic Over Static
The cost of reprinting marketing materials is typically hidden and dramatic. A restaurant chain reprinting table menus across 50 locations every quarter spends tens of lakhs annually on print alone. A product company updating packaging after a label change reprints thousands of units. With SMLLR dynamic QR codes, these costs disappear. Your QR code is a permanent, updatable digital asset. The physical code you print today works as well in 2030 as it does today — pointed at whatever destination makes the most sense at that moment.
Scheduled and Conditional Redirects
SMLLR takes dynamic QR codes further than simple URL updates. With Scheduled Redirects (Pro and above), set time-based redirect rules: show the breakfast menu from 7-11 AM, the lunch menu from 11 AM-3 PM, and the dinner menu from 6-11 PM — automatically, every day. With Device Targeting, route iOS and Android users to different app store pages. With Scan Limits, cap the number of times a promotional offer can be redeemed.
What Happens Behind a Single Scan
When someone scans a SMLLR dynamic QR code, the camera reads a short identifier and sends a request to our edge network. Our system looks up the current destination for that identifier — which could depend on the time of day, the device, or a specific redirect rule you've set — and returns a redirect in under 200ms. None of this logic lives in the printed code itself; it all lives in your dashboard, which is exactly why it can change after the code is already in the world.
Where a Static Code Quietly Fails
A static QR code doesn't announce that it's broken — it just silently sends people to a dead page, a 404, or an old offer nobody meant to still be running, and you have no way to know how many scans hit that dead end. Because a dynamic code is a pointer rather than a fixed destination, you can catch a broken link before a single customer sees it, simply by testing and updating the redirect from your dashboard.
Related Reading
Frequently Asked Questions
What is the difference between a dynamic and static QR code?
A static QR code has a permanent destination encoded directly into its pixel pattern — once printed, it cannot be changed. A dynamic QR code encodes a short SMLLR redirect link. You control where that redirect points from your dashboard, and you can change it anytime without reprinting.
Can I update a dynamic QR code after it is printed?
Yes. That is the defining feature of dynamic QR codes. Log into your SMLLR dashboard, find your QR code, update the destination URL, and save. Every scan of the physical printed code immediately delivers the new destination — no reprinting, no new code.
Do dynamic QR codes expire?
No. SMLLR dynamic QR codes do not expire on their own. They remain active as long as your account is active. You can optionally set expiry dates or scan limits for specific promotional campaigns.
What happens if I delete a dynamic QR code by mistake?
Deleted codes stop redirecting; any physical copies in circulation will show an error or your configured fallback page. We recommend deactivating rather than deleting a code if you might reuse it later.
Can a dynamic QR code point to different destinations for different people at the same time?
Yes. Rules like device type, time of day, or A/B test weighting can all apply simultaneously, so two people scanning the identical physical code seconds apart can land on different destinations.
Is there a limit to how many times I can change the destination?
No. You can update the destination as many times as you want, with no limit and no additional cost, for the life of your account.
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