Resource library

Guides and free tools for short links and QR codes

Guides to short links and QR codes that name their sources, free tools that run in your browser, and help pages for when something goes wrong.

Last reviewed 27 October 2026 by the CTAurl team

Guides and tools

13 resources

A cat in a meeting room scans a QR code on the wall screen to open the latest slides.

What is a dynamic QR code?

A dynamic QR code can be repointed after printing. How the redirect works, when a static code is the better choice, and the risk to check before a print run.

Two cats at a restaurant table scan a QR code on a table stand to order from the menu.

How to make a restaurant menu QR code

One QR code per table, printed to scan in dim light, checked for stickers, and updated without reprinting the tent cards.

A cat outside a gym scans the QR code on a class schedule flyer to book a class.

QR code print size, quiet zone and logo limits

We rendered and decoded QR codes at every error-correction level. The logo and quiet-zone limits we measured, the method, and what a software test cannot tell you.

A cat at a café table reads a social post with the link read-it.now/ocean-brief.

A UTM naming convention that keeps reports clean

Google Analytics reports "Instagram" and "instagram" as two sources. A one-page naming convention keeps each campaign in one report row.

A cat unboxing a speaker at home scans the QR code on the box to open the setup guide.

What happens to printed QR codes when you stop paying?

What CTAurl does when you cancel, where provider terms differ, and five questions to ask any provider before a print run.

QR code generator

Make a static QR code in your browser and copy it as SVG. A static code cannot be edited or counted.

A cat at a café table reads a social post with the link read-it.now/ocean-brief.

UTM builder

Build a campaign URL in your browser, with every value lowercased and hyphenated for you.

A cat at a home desk reads an email from a language school with the link learn-more.now/japanese-trial.

Link checker

Read a link before you tap it: the real domain, the tags and the warning signs. It reads the address only and does not follow redirects.

Help centre

Answers on links, QR codes, reports, plans and outages.

A cat at a café table reads a social post with the link read-it.now/ocean-brief.

Developer notes

Status codes, back-half rules, query strings and the 22 CTA domains.

Two cats at a restaurant table scan a QR code on a table stand to order from the menu.

Customer stories

Worked examples, clearly labelled, until customers approve their own.

A cat unboxing a speaker at home scans the QR code on the box to open the setup guide.

Switching to CTAurl

What moves, what cannot, and how to keep printed codes working.

Works with your tools

How CTAurl links work with analytics, email, SMS and print. There are no plug-ins; a plain link is enough.

Put a guide into practice

Make your first link free.

Create a free link See pricing