What is a dynamic QR code, and when do you need one?

A dynamic QR code encodes a short web address that redirects to your real destination, so you can change where it points after printing and count each scan.

A static QR code encodes the destination itself: the pattern never changes and nothing records a scan.

Both look identical on a flyer. A typo in a static code on 10,000 flyers means reprinting all 10,000, while a dynamic code is fixed with an edit but depends on a service that stays paid and online.

What a dynamic QR code is

A printed QR symbol cannot be edited. Whatever its modules hold on printing day is what every phone reads, under the rules of ISO/IEC 18004:2024, edition 4, published in August 2024.

A version-n symbol is 17 + 4n modules wide, so version 3 is 29 by 29. A static code holds the destination URL, such as https://example.com/spring-sale. A dynamic code holds a short URL on a redirect server, such as https://go.example.com/spring.

When someone scans the dynamic code, the phone opens the short URL. The server looks up the current destination for the slug spring, logs the scan and answers with a redirect.

Editing the destination changes one database row and leaves the printed symbol alone. A static code that encodes a tracked short link behaves as a dynamic one.

Check the redirect type

The Internet Engineering Task Force's RFC 9110 (June 2022) calls a 301 response heuristically cacheable in section 15.4.2, so a browser can keep sending a returning visitor to the previous destination after you change it.

Section 15.4.3 says a client that receives a 302 ought to keep using the original URL. A terminal shows which one a short link returns:

$ curl -sI https://go.example.com/spring
HTTP/2 302
location: https://example.com/spring-sale?utm_source=flyer&utm_medium=print&utm_campaign=spring26

TrackRev's short links return a 302. Run the same command on a vendor's link before you print.

Dynamic vs static QR codes compared

How a short link shrinks the code

More data means a bigger grid, and the version number sets how many bytes fit.

A static code that carries its own tracking tags, https://example.com/spring-sale?utm_source=flyer&utm_medium=print&utm_campaign=spring26, runs to 87 characters. At level M that overflows version 5's 84 bytes and lands on version 6.

The 29-character short link https://go.example.com/spring overflows version 2's 26 bytes and lands on version 3. Printed 2 cm wide with a 4-module quiet zone on each side, the modules measure:

The short link's modules print 32% larger at level M and 49% larger at level H. Larger modules survive small prints and bad light better, so a short link helps most on packaging and stickers.

Static codes can be measured too

A static code gets analytics only through the page it opens. Google's guide lists 9 UTM parameters and says to always include 3: utm_source, utm_medium and utm_campaign.

Add those to the encoded URL and Google Analytics 4 reports the sessions under Traffic acquisition. Give each placement its own utm_content value, such as door and counter, to compare spots.

That fits one poster that sends people to your own site, and it costs nothing. It counts sessions, so a scan followed by a closed tab leaves no trace.

The tags also take 56 of the 87 characters in the example above and freeze into the print, so a moved landing page strands them. The UTM parameters guide covers naming.

What dynamic QR codes cost in October 2026

Vendors give static codes away and charge for the redirect. Bitly publishes the limits that matter most for printed codes:

Core's 5 changes cover a weekly offer swap on one code (about 4 a month) but not on three codes (about 13).

Uniqode's dynamic codes start at $9 a month on annual billing only, with a 30-day money-back guarantee, and its FAQ lists a custom domain as a $2,000 per domain per year add-on on the Plus plan.

QR Code Generator Pro caps dynamic codes at 2 on Starter, 50 on Advanced and 250 on Professional, and Starter includes 10,000 tracked scans. Its euro prices load by script, so check them on its pricing page.

For link-level comparisons beyond QR, the Bitly alternatives guide covers six tools.

Put the redirect on a domain you own

A code that encodes a vendor's domain works only while your account does. On your own subdomain, such as go.example.com/spring, it can move to another provider with a DNS change, if the new provider can recreate the slugs.

TrackRev supports custom tracking domains and encodes the branded URL once one is active; the branded short link guide covers the DNS setup.

I put anything printed in volume on a dynamic code on my own domain, and anything permanent or offline on a static one.

When a static QR code is the better choice

A Wi-Fi login has to be static. Android and iOS 11 and later read the network details straight from the image, according to the ZXing project's barcode contents guide:

WIFI:T:WPA;S:mynetwork;P:mypass;;

That string is not a URL, so a redirect server has nothing to forward.

A static code also fits anything that must outlive a subscription, such as an engraved plaque or a molded part, and a URL on your own site that will not move; if the page does move, a server-side redirect keeps that URL alive.

TrackRev's free QR code generator makes static codes in your browser with no signup or watermark, exports PNG or SVG and switches to error correction level H (30%) when you add a logo.

The code encodes your link directly, so it never expires.

Watch for stickers over printed codes

The Federal Trade Commission's December 6, 2023 consumer alert notes scammers covering parking-meter QR codes with their own. A dynamic code is harder to vet at a glance because the scanned address is a short link.

In public places, print the short URL as text beside the code and inspect the spot now and then.

Dynamic QR codes in TrackRev

In TrackRev a campaign has one destination URL and a short link per channel.

Each link row has a QR icon that opens the designer with the link's URL filled in, so the printed code encodes the short link and each scan counts like any click, with device and location.

Edit the campaign's destination later and every link under it, QR code included, follows.

The QR code designer has six dot styles, a logo overlay up to 2 MB, and PNG exports at 256, 512, 1024 or 2048 pixels, or SVG.

The redirect is a 302 that adds the link's UTM parameters to the destination, so Google Analytics gets a source and medium without a long URL in the pixels, and device targeting can send iPhone and Android scans to different stores.

The free plan includes QR codes within its 50 links and 1,000 tracked events a month, and hides revenue figures.

Paid plans are Starter at $39, Growth at $99 and Scale at $199 a month (see pricing), and annual billing pays for 9 months to get 12.

On any of them, connect Stripe, Paddle, Polar or Lemon Squeezy and the same scans can be followed to payments; the QR code tracking to revenue post walks through that setup.

Pick a dedicated QR vendor when you want it to build the page behind the code; QR Code Generator Pro lists 22 QR code types. TrackRev's codes point at a URL you already have.

Pick Bitly if you need only a few codes a month and already pay for it.