QR codes are small, convenient 2D codes that store information in a smart and efficient way. At first glance, they may look confusing, but to a QR code scanner, they are easy to read and understand.
When you scan a QR code, it can instantly redirect you to a website, open a dialog box, or display text in a notes or notepad app on your device.
QR codes have many practical uses. From a marketing point of view, they are especially valuable because they add interactivity and make information easy to access. This is why QR codes are now widely used across web stores, blogs, social media platforms, and even online journals.
However, because QR codes are used in so many different ways, proper testing is essential to ensure they work as expected. If you are involved in marketing and planning to launch a QR code campaign, you should run specific test cases before going live to avoid errors and ensure a smooth user experience.
What Are Static and Dynamic QR Codes?
Before getting started, it’s important to understand the different types of QR codes. Since you’ll be using them in your campaign, knowing how each type works will help you make the right choice and achieve better results.
Static QR Codes
Static QR codes are QR codes whose content cannot be edited or updated after they are created and printed. No matter what type of data is stored—such as a URL, file, or text—the same information will always appear when the code is scanned.
In simple terms, once a static QR code is printed, the data is permanent and cannot be changed.
Static QR codes are best suited for situations where the information does not need frequent updates. Later in this guide, you’ll see several practical use cases where static QR codes work perfectly.
Dynamic QR Codes
A dynamic QR code is a type of QR code whose content can be changed even after it has been printed or shared. For example, if the QR code originally linked to a webpage, you can later update it to display text, a file, or a different link without creating a new code.
This works because dynamic QR codes do not store the actual content directly. Instead, they point to an online database. When someone scans the code, the system retrieves and displays whatever data is currently stored in that database. By updating the database, you can change what users see.
Another major advantage of dynamic QR codes is tracking. They allow you to collect valuable data such as the number of scans, user location, device type, and other analytics. This makes them highly useful for marketing and performance measurement.
Because of these benefits, dynamic QR codes are more popular and versatile than static QR codes. However, static QR codes are much easier to create and are often available through free online QR code generators.
Dynamic QR codes, on the other hand, usually require a dedicated service or platform to manage content and tracking features.
Sample QR Codes for Testing
Now that you understand the basic types of QR codes, it’s time to identify which QR code formats should be tested to ensure they work correctly.
1. URL QR Code
One of the most common uses of a QR code is to store a website URL. This URL can direct users to a blog, online store, social media profile, or any other web page. Based on your needs, you can use either a static or a dynamic QR code for this purpose.
For instance, if you are creating a QR code for a landing page and do not plan to change your domain or hosting anytime soon, a static QR code is a suitable choice. However, if you expect to update the link in the future, a dynamic QR code is the better option.
Some QR code generators let you customize the design, such as adding a logo to the center of the QR code. If branding is important for your campaign, consider using these design options to create a more recognizable and professional-looking QR code.
2. VCard QR Code
A VCard QR code is used to share contact details through a simple scan. When scanned, it allows users to instantly view and save a person’s contact information on their device.
Because contact details usually remain unchanged for long periods, VCard QR codes are well suited for static QR codes.
When you scan a VCard QR code on a mobile device, a pop-up will appear on your screen. From there, you can quickly save the contact information, make a call, send an email, or even send a text message.
3. Email QR Code
An email QR code lets users quickly draft an email by scanning the code. When scanned, it automatically opens the email app on the device and creates a pre-filled email to a specific address. If the device doesn’t have an email app, the content may open in a notepad app instead.
While creating this QR code, you can include the email address, subject, body content, and even a signature.
For simple template emails, a static QR code works perfectly.
You can use a dynamic QR code for this, but in most cases, it is not necessary.
4. SMS QR Code
SMS QR codes work similarly to email QR codes. Instead of an email address, you enter a phone number, and the subject line is replaced with a custom message.
When scanned, the QR code opens the messaging app and creates a pre-filled SMS ready to send. This is especially useful for surveys, feedback forms, or quick customer responses. Companies often place these QR codes on brochures, menus, or pamphlets for easy access.
Below is an example of an SMS QR code you can use for testing.
On most smartphones, scanning an SMS QR code automatically opens the default messaging app. The recipient’s number and the message content will be filled in automatically, making it quick and easy to send.
5. WiFi QR Code
A WiFi QR code makes it easy to share WiFi login credentials securely. WiFi networks are usually password-protected to prevent unauthorized access, but giving someone your password can sometimes feel awkward or inconvenient.
With a WiFi QR code, you can avoid this entirely. Instead of typing the password manually, guests simply scan the QR code, and their device connects automatically—no password needed. It’s quick, secure, and user-friendly.
Below is an example of a WiFi QR code. While this example won’t actually connect to a network, it shows how the QR code would function in real life.
6. Social Media Share QR Code
A social media share QR code lets users quickly copy a webpage link and share it on their preferred social media platforms.
This type of QR code is a smart way to increase the reach of your webpage. You can even add a call-to-action (CTA) on your site encouraging visitors to scan the QR code and share the page if they like it.
7. File QR Code
A file QR code allows users to download or open a TXT file on their device when scanned. This makes it ideal for sharing documents quickly and efficiently.
One of the biggest benefits is that it helps save paper. You can simply print the QR code and place it in a public area, allowing anyone who needs the document to scan and access it instantly.
Below is a sample file QR code you can use for testing.
8. Phone Number QR Code
A phone number QR code is a simplified version of a VCard QR code. Unlike a full VCard, it only includes a person’s name and phone number.
When scanned, the QR code automatically opens the contacts app on your device with the information already filled in, making it quick and easy to save.
Below is a sample phone number QR code you can scan to see how it works.
9. Location QR Code
A location QR code stores specific latitude and longitude coordinates. When scanned, it opens your device’s maps app and displays the exact location.
One practical use is on hiking trails where network reception or GPS may be weak. QR codes placed along the trail can help hikers see their location on a map without relying on a network or GPS.
You can scan this random location QR code and find a random coordinate we used as a sample.
10. Event QR Code
Event QR codes are perfect for occasions like birthday parties, weddings, award ceremonies, and other gatherings. Instead of sending individual invitations, you can create a QR code and share it in a group chat or via email.
When scanned, an event QR code displays key details such as the event name, venue address, date, and time. This makes it a simple and convenient way to share event information with all attendees.
Below is a sample event QR code you can use for testing.
Why Test QR Codes?
Testing QR codes is essential because even small errors can cause big problems. Here are some key reasons why QR code testing is necessary:
1. Testing Links
For URL and Social Media Share QR codes, it’s important to check that the links work correctly. A broken QR code may lead to the wrong page or not work at all. Testing allows you to detect and fix these issues before your audience encounters them.
2. Testing Across Different OS and Platforms
QR codes need to be compatible with multiple operating systems and devices. A code that scans perfectly on an Android device may have issues on iOS, Windows, Linux, or browser-based scanners. Thorough testing ensures your QR codes work smoothly across all platforms.
3. Location Testing
Location testing involves scanning the same QR code from different geographical areas. Connection quality and ISP restrictions can affect whether a QR code works in certain regions. Testing helps identify these rare but critical issues so they can be resolved.
4. Screen and Color Testing
Customized QR codes may include logos, colors, and unique designs. Different screens display colors differently, so a QR code may look perfect on an OLED/AMOLED screen but not on an IPS, VA, or TN display. Similarly, a QR code might work well on a large screen but not on a smaller one. Testing ensures your QR codes look and function properly on all devices and screen types.
Conclusion
In this guide, we covered:
- The different types of QR codes
- Sample QR codes for testing
- Why QR code testing is important
With this knowledge, you now understand how to test QR codes effectively and what to look for during testing. Proper testing ensures that your QR codes are functional, visually appealing, and reliable for all users.