Aztec Code vs. QR Code: Understanding the Key Differences for URL Shortening

Published March 08, 2025 · GoTo.now Team

TL;DR - Aztec codes and QR codes are both square barcodes that hold data, but they're built for different jobs. Aztec codes rule on boarding passes and train tickets. QR codes win everywhere else - Especially when you're sharing short links - Because every phone camera scans them without any extra app.

Key points

• QR codes have three big corner squares; Aztec codes have one bullseye in the middle
• Any smartphone camera reads a QR code out of the box - Aztec codes often need special software
• Aztec codes pack more data into less space, which is why airlines love them
• QR codes survive damage better thanks to stronger error correction
• For sharing links with the public, QR codes are the clear pick

Ever looked closely at your boarding pass and thought, "that's a weird-looking QR code"? It probably wasn't a QR code at all. It was an Aztec code - A close cousin with a very different day job.

Both are 2D barcodes. Both hold text, links, or data. But if you're picking one to put on a poster, a menu, or a product box, the choice matters more than you'd think. Here's the honest breakdown.

How to tell them apart at a glance

The giveaway is the finder pattern - The part that tells a scanner "hey, I'm a code, read me."

A QR code has three large squares, one in each corner except the bottom right. Your phone uses those to figure out which way is up, even if you scan at an angle.

An Aztec code has a single square bullseye dead center. That's actually where the name comes from - It looks like an Aztec pyramid seen from above. No corner markers, and no white border needed around it either.

So next time you're at an airport gate, take a look. Bullseye in the middle? Aztec. Three corner squares? QR.

What Aztec codes do really well

Aztec codes aren't a lesser format. In their lane, they're excellent:

• They're compact. Aztec codes squeeze more data into less space than a QR code of the same size.
• They skip the quiet zone. QR codes need blank space around them to scan well. Aztec codes don't, so they can sit tight against other print.
• They print reliably at small sizes. That's why airlines, train operators, and ticketing systems picked them years ago.

If you've ever scanned a paper train ticket in Europe, you've used an Aztec code. Millions of people scan them daily - With dedicated hardware scanners at gates and turnstiles.

And that last bit is the catch.

Where Aztec codes fall short for regular people

The airline's gate scanner is built to read Aztec codes. Your customer's phone camera usually isn't - At least not without opening a special app first.

That's the whole problem in one sentence. When you share a link with the public, you don't control the scanner. You're counting on whatever camera app came with their phone. And phone makers optimized those apps for one format: QR.

Point any recent iPhone or Android at a QR code and a link pops up in about a second. Point it at an Aztec code and, most of the time, nothing happens. Your customer shrugs and walks away. That's a lost click you'll never even know about.

Why QR codes win for sharing links

For anything the public scans, QR codes take it. Here's the side-by-side:

That error correction row deserves a second look. A QR code at the highest correction level still scans with almost a third of it scratched, smudged, or covered. That's also what lets you drop a logo in the middle of one. For codes living on product packaging or outdoor posters, that toughness matters.

Pair the QR code with a short link and it gets better

Here's a trick that improves any QR code: don't encode your long, messy URL. Shorten it first.

A shorter URL means fewer characters inside the code, which means a simpler pattern with bigger squares. Simpler patterns scan faster and from farther away. So run your link through a URL shortener first, then make the code.

Do it on GoTo.now and you get two bonuses. First, the QR code generator is free and lets you add colors and your logo. Second, the code becomes editable - It points at your short link, so you can change the destination later without reprinting anything. Print 1,000 flyers, change your mind, update one field. Done. Scans are unlimited, the code never expires, and every scan shows up in your private click stats, visible only to you.

The key differences, settled

Strip away the technical details and it comes down to this: Aztec codes are for closed systems with their own scanners. QR codes are for the open world, where the scanner is whatever phone happens to be in someone's pocket.

If you're building a ticketing system for an airline, go Aztec. If you're doing literally anything else - Menus, flyers, packaging, business cards, social posts - Go QR, and put a short link inside it so you can track it and fix it later. It takes about a minute to make one, and it costs nothing.