10 QR Code Scanning Problems and How to Fix Them

Update:  April 29, 2024
10 QR Code Scanning Problems and How to Fix Them

Are QR code scanning problems holding back your marketing campaigns?

This comprehensive guide will tackle the most common QR code issues head-on, providing practical solutions for seamless scanning.

Discover how to boost the scannability of your QR codes using a reliable QR code generator online. 

Read further to know how to fix blur QR code problems and issues.

How to solve these QR code scanning problems

Here are the common QR code problems and discover how to fix QR code issues in no time.

QR code problem #1: Color Contrast and inverted color of QR codes

Inverted QR code

If your QR code isn't scanning smoothly, it could be due to a lack of color contrast or inverted colors. 

Here’s the fix:

  1. Remember that the foreground color should always be darker than the background color.
  2. Avoid light colors like yellow, light blue, and pastels, which can cause scanning delays.
  3. Stick to a high-contrast combination to enhance scannability.


QR code problem #2: Blurred QR code output

QR code blurry images can be a nightmare for scanning. Ensure crisp scanning experiences by using the proper image file format. 

For print materials, choose vector formats like SVG to maintain image quality. For digital use, opt for raster formats like PNG.

QR code problem #3: Congested QR code data

Static and dynamic QR code

If you're cramming too much information into a static QR code, you're asking for trouble. 

Static QR codes store data directly into their patterns.

Each square or module represents a portion of the data. Following this logic, bigger data will lead to highly congested patterns with many modules.

To fix this, you have to keep your data at a minimum. For long URLs, you can use an online URL shortener.

You can also use dynamic QR codes instead. Data size won’t affect their patterns since they already have a pre-embedded short URL that redirects to your data.

This way, you can edit or change your data anytime without creating a new QR code.

QR code problem #4: Mismatched QR code sizing

Size matters when it comes to scanning QR codes. If your code is too small or placed at a distance, users may need help to scan it. 

To ensure optimal scanning, follow these sizing guidelines: use a minimum size of 3 cm x 3 cm for short-distance scanning. 

For long-distance scanning, apply the formula: distance from the scanner divided by 10.

QR code problem #5: Inaccessible QR code data

What’s the point of scanning a QR code if the data isn’t accessible? Avoid disappointment by checking your data beforehand. 

Ensure access permissions are in place for files stored in cloud services. If you use dynamic QR codes, double-check your subscription plan’s validity to maintain data accessibility.

QR code problem #6: Wrong QR code placement

QR code placement

Placing your QR code in the wrong areas can significantly reduce scans. Ensure maximum exposure by considering the following tips:

1. Place the QR code in areas where it will experience no creases or folds.

2. It is best to place your QR code in flat areas where the scanner can easily scan the code.

3. Use the appropriate paper material to embed your QR code.

4. Place your QR code in places where people usually gather or walk by—train stations, bus stops, and recreational parks.

5. Make sure to keep your QR code at eye level.

QR code problem #7: QR code not displaying the correct information

Even if the QR code scans successfully, displaying incorrect information can confuse users. To fix this, opt for dynamic QR codes that allow you to edit the data without hassle. 

Stay in control and provide accurate information whenever needed.

QR code problem #8: Over-customized QR code design

While customization is excellent, going overboard can hinder scanning. Keep unrecognizable codes at bay by following the QR code customization guidelines.

Avoid inverting colors, selecting unscannable patterns, or adding excessive eye-catching elements. Keep it visually appealing yet scannable.

QR code problem #9: Expired QR code

Expired QR codes are a major letdown. Ensure that the QR code generator you use is transparent about the code’s functionality and expiration period. 

If you have a dynamic QR code and your subscription has expired, reactivate it to keep the QR code functioning seamlessly.

QR code problem #10: The device does not scan or recognize the QR code

Not all smartphones support native QR code scanning. We recommend downloading a QR code scanner app for older devices to cater to all users. 

Android users can try the QR TIGER QR code scanner app from the Play Store, while iPhone and iPad users can find a suitable app in the App Store.

Why running a test scan is important: impression, data, profit

Before hitting that download button and printing your QR codes, pause and conduct a scan test. Here are three reasons why it’s essential:

1. Make a positive impression

Picture this—you’re introducing QR codes to your audience, and they’re encountering them for the first time. 

You want to captivate their attention and leave a lasting impression. By conducting a scan test, you ensure a seamless experience, ensuring those codes work. 

2. Display data accurately and quickly

Speed and accuracy are crucial when it comes to scanning QR codes. Test your codes to guarantee that the data they display is spot on, without errors or glitches. 

And here’s a bonus: when your codes scan, it enhances the overall user experience. 

3. Prevent profit loss

Unscannable QR codes can be a real buzzkill for your marketing campaigns. They lead to missed opportunities and decreased profitability. 

Think about it—you invest time, effort, and resources into printing marketing materials, only to realize that the codes are faulty. 

By conducting scan tests, you nip potential problems in the bud, avoiding the need for costly reprints and ensuring your campaigns generate the profits they deserve.


Create flawless QR codes with QR TIGER

Employ best practices when creating your codes to tackle the scanning challenges that QR codes can present. 

Addressing these QR code scanning problems and following the recommended solutions helps ensure smooth scanning. You can achieve greater success with your QR code campaigns if you know how to use them wisely.

Use the most advanced QR code generator, like QR TIGER, to quickly update or modify your QR code’s information. 

Whether you need to redirect users to new landing pages or revise existing data, QR TIGER has you covered.

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