Can I change the landing page after a campaign is already running?

Yes, with a dynamic QR code. The printed QR stays the same; you update the destination in your dashboard. This is useful for redirecting expired offer pages to the main site, or A/B testing landing page variants mid-campaign.

Are QR codes effective for billboard advertising?

Yes, especially for billboards at transit stops, shopping centres, and venues where viewers have time to scan. The key is making the QR large enough (at least 15cm x 15cm at street scale) and pairing it with a clear call to action.

How do I encode a URL with UTM parameters in a QR code?

URL-encode the entire destination URL before passing it as the `data` parameter. For example: `data=https%3A%2F%2Fyourbrand.com%3Futm_source%3Dprint`. Most marketing automation platforms and spreadsheet ENCODEURL functions can do this for you.

What is the best QR code size for print advertising?

A minimum of 2cm x 2cm for materials viewed from 30cm (brochures, flyers). For posters viewed at 1m, aim for 5cm x 5cm. For billboards, scale proportionally — typically 20cm x 20cm minimum at the intended viewing distance.

All Industries

QR Codes for Marketing Campaigns

Measure your offline marketing ROI for the first time. Unique QR codes per campaign, per channel, and per creative let you see exactly which placements drive the most scans and conversions.

45%

of marketers include QR codes in print campaigns

37%

higher response rate than URL-only print ads

6.8B

QR code scans globally in 2023

78%

of marketers report positive ROI from QR campaigns

Common QR Code Use Cases for Marketing

Practical applications your team can deploy today — no hardware, no SDK, just a URL.

Print Ad & Magazine Campaigns

Embed a QR code in print ads to bridge the gap between magazine readers and your landing page. Track scan volume by publication, issue, and creative variant.

Example URL

https://api.online-qr.com/v1/make-qr?data=https://yourbrand.com/campaign/print-q1

Direct Mail with UTM Tracking

Give each direct mail piece a unique QR code with UTM parameters. See exactly which mailer version drove the most website visits in Google Analytics.

Example URL

https://api.online-qr.com/v1/make-qr?data=https://yourbrand.com/lp?utm_source=direct-mail%26utm_campaign=spring-2026

Out-of-Home (OOH) & Billboard

Turn billboards and bus shelters into interactive ad units. A QR code makes it trivially easy for a passerby to take your brand from outdoor to online in seconds.

Example URL

https://api.online-qr.com/v1/make-qr?data=https://yourbrand.com/billboard-offer

Packaging & Unboxing Campaigns

A QR code inside the box can drive post-purchase engagement: loyalty sign-ups, reviews, referral codes, or exclusive content — all measurable through analytics.

Example URL

https://api.online-qr.com/v1/make-qr?data=https://yourbrand.com/unboxing

Event & Trade Show Booth

Replace expensive printed brochures with a QR code that links to your digital press kit, product catalogue, or lead capture form. Easily A/B test different landing pages.

Example URL

https://api.online-qr.com/v1/make-qr?data=https://yourbrand.com/tradeshow-2026

Business Card & Personal Branding

A QR code on a business card links to a digital contact card (vCard), portfolio, LinkedIn profile, or Calendly booking page — far more useful than a static URL.

Example URL

https://api.online-qr.com/v1/make-qr?data=https://yourname.com

How Online-QR Helps Marketing Businesses

Generate, track, and manage QR codes for your entire operation with a single API endpoint.

Measure Offline Campaign ROI

Each campaign gets its own QR code. Scan analytics tell you how many people responded, when, on what device, and from which geography — making offline performance as measurable as digital.

A/B Test Landing Pages Without Reprinting

Dynamic QR codes allow you to swap the destination URL mid-campaign. Test landing page variants without issuing new print materials.

Zero Friction for Consumers

A QR code removes the need to type a URL. For outdoor, print, and packaging ads, that frictionless path from physical to digital dramatically increases response rates.

API-First for Campaign Automation

Integrate QR generation directly into your campaign management tooling. Automatically generate unique codes per variant, per region, or per creative from a single API call.

Generate Your First QR Code in Seconds

No sign-up, no SDK, no library. Just an image tag with a URL.

Campaign QR with UTM — HTML img tag

<img
  src="https://api.online-qr.com/v1/make-qr?data=https://yourbrand.com/lp%3Futm_source%3Dprint%26utm_campaign%3Dspring-2026&size=300"
  alt="QR Code for Marketing"
  width="300"
  height="300"
/>

The `data` parameter accepts any URL including those with UTM parameters. URL-encode the destination before passing it. This lets Google Analytics attribute scans to the right campaign.

Live Preview

This QR code was generated live by the Online-QR API. Scan it to see where it leads.

Open QR Generator

Frequently Asked Questions

Everything you need to know about using QR codes for marketing.

Create a unique QR code per channel (print, OOH, direct mail, packaging). Online-QR analytics show scan counts per code. Combine with UTM parameters in the destination URL to flow data into Google Analytics for end-to-end attribution.

No Signup Required

Start Generating QR Codes for Your Marketing Business

Basic QR code generation is free, instant, and requires no account. Upgrade for dynamic codes, scan analytics, and custom templates.

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QR Codes for Other Industries

Retail Events Real Estate