QR Code: what it is, types, practical uses and how to generate yours

Fecha: 22 de May de 2026 Noelia Leiro

QR codes have evolved from a technological curiosity to an indispensable tool in any company’s digital strategy. Their resurgence has established them as a fundamental bridge between the physical and digital worlds, especially for mobile marketing and apps. Understanding their operation and application is key to transforming user interaction and optimizing conversions.

A QR code (Quick Response Code) is a two-dimensional barcode that stores information encoded in a dot matrix. Designed by Denso Wave in Japan in 1994 for the automotive industry, its ability to store more data than a linear barcode and its quick reading by smartphone cameras have made it a versatile tool.

In the following video we tell you all about QR codes. And if you prefer to read, you will find all the information below.

Why QR codes are back for good

QR codes have experienced a remarkable resurgence, driven by the need for contactless interactions and integration into mobile ecosystems. This resurgence is not a fad, but a strategic response to evolving consumer behavior.

In Latin America, more than 110 million payments were made with QR codes in 2022, with a 150% increase driven by Mercado Pago, demonstrating a massive adoption of the format for digital transactions. In Spain, AECOC ESCAN QR recorded more than 200,000 scans for the first time in the last quarter of 2024, a 400% growth over the previous year, with a clear focus on mass consumption.

Experts from AECOC and GS1 Spain, such as Elena Campdelacreu, Standards Manager at GS1 Spain, say that QR codes are set to transform the point-of-sale shopping experience, offering multiple benefits for both consumers and the retail sector. The global QR code payments market surpassed USD 12.2 billion in 2024 and is projected to reach USD 40.1 billion by 2034, at a CAGR of 18.7%, according to GM Insights. By 2025, 100 million smartphone users in the US are expected to scan QR codes, with similar projections for Latin America due to growing adoption.

• Convenience: They offer instant access to information or actions without the need to type URLs.
• Versatility: They can direct to websites, download apps, make payments or share contacts.
• Traceability: Dynamic codes allow tracking interactions, unifying offline and online data.

What is a QR code and how does it technically work?

A QR code is a type of two-dimensional barcode designed to store information that can be read quickly by a mobile device. Its name, Quick Response, reflects its main advantage: the speed of decoding.

Technically, a QR code is an array of black and white square modules that encode data using four standardized data modes: numeric, alphanumeric, byte/binary and kanji. Unlike traditional barcodes, which store data in only one direction (horizontal), QR codes store data in two directions (horizontal and vertical), giving them significantly greater storage capacity. A QR code version 40 can store up to 4,296 alphanumeric characters or 2,953 binary bytes, while a typical barcode can only hold between 8 and 25 alphanumeric characters. Smartphones read these codes using their camera, which detects the patterns in the modules and decodes them into the original information using embedded software.

• Storage capacity: Much larger than linear barcodes.
• Error correction: They can be scanned even if they are partially damaged (up to 30% data loss).
• Fast reading speed: Designed for instant decoding by mobile device cameras.

Types of QR codes: Static vs. dynamic and their variants

The choice between a static and a dynamic QR code is crucial and depends on the objective of the campaign, making a substantial difference in flexibility and analysis capability.

Static QR codes embed information directly into the code pattern, which means that once generated and printed, they cannot be modified. They are ideal for permanent information, such as WiFi credentials or immutable website addresses, but lack performance metrics.

Dynamic QR codes, on the other hand, store a short URL that redirects to the final information, allowing the destination of the link to be changed at any time without altering the physical code. This feature is fundamental for marketing, as it facilitates scan tracking, geographic location (without sensitive personal data according to regulations such as the RGPD) and campaign optimization. Dynamic QR codes scan 20-30% faster in practical benchmarks with large volumes of data compared to static ones.

Static QR Codes: Advantages, Limitations and Use Cases

Static codes are simple to create and do not require subscriptions, making them perfect for uses where the information will not change.

• Advantages: They do not expire, are free and easy to generate.
• Limitations: Information cannot be modified once created, and they do not offer scanning metrics.
• Use cases: Business cards (vCard), permanent contact data, access to WiFi networks.

Dynamic QR codes: Editing, tracking and data analysis

Dynamic codes are the preferred choice for any marketing or business strategy seeking flexibility and actionable data.

• Editing: The destination can be changed in real time without reprinting the code.
• Tracking: Allows monitoring of scans, location, time and type of device.
• Data analysis: Integration with analytics tools for campaign optimization.

QR codes with logo or custom QR codes for branding

Customizing a QR code with a brand logo or colors increases trust and scan rates, transforming it into a branding asset.

• Brand trust: A recognizable design generates greater user confidence.
• Scan rates: QR codes with logos and calls to action receive 80% more scans, according to a report by QR Tiger.
• Aesthetic integration: They become another element of the advertising or packaging design.

Specialized QR codes: vCard, WiFi, payments, geolocation

There are variants of QR codes designed for specific functions that optimize the user experience.

• vCard QR: Automatically saves contact data on the user’s cell phone.
• WiFi QR: Connect to a WiFi network without entering a password.
• QR payments: Enable fast and secure transactions, with exponential growth in Spain and Latin America.
• QR Geolocation: Directs to a specific location on maps.

Practical uses of QR codes in mobile marketing and apps

QR codes are a powerful tool for connecting offline and online marketing, driving adoption and engagement of mobile applications.

The magic of Offline-to-Online (O2O) marketing lies precisely in QR codes, offering instant access to digital platforms such as apps. This boosts engagement and conversions, reducing user steps for greater efficiency. By 2026, the QR code will be treated as a design element, with the same care that is applied to typography or advertising photography.

Onboarding of users and downloading of apps from QR

Simplifying the download process is vital for user acquisition. A QR can lead directly to the app store or to an optimized landing page.

• Print advertising: Posters, brochures or magazines with QR to download the app.
• Points of sale: QR in physical stores to offer discounts when downloading the app.
• Events and trade shows: Quick access to the app for event information or networking.

Mobile payments and in-app transactions

QR codes are transforming the way users interact with payments, both in physical stores and within apps.

• Retail: Quick payment by scanning a QR at the point of sale.
• Donations: Facilitate direct donations through the app.
• In-app purchases: Activating promotions or unlocking exclusive content via QR.

Offline-to-online marketing: packaging, points of sale, events

The bridge between the physical and digital worlds is one of the most effective uses of QR codes, allowing to measure the ROI of traditional campaigns.

• Smart packaging: QR on products for manuals, recipes, nutritional information or warranty registration.
• Outdoor advertising: Billboards, buses or bus shelters with QR that lead to web promotions or app downloads.
• Events: Registration, access to agendas, satisfaction surveys or download exclusive content.

Gamification and interactive experiences in apps

QR codes can enrich the user experience by adding a playful and interactive component to applications.

• Treasure hunt: Scan QRs at physical locations to unlock rewards in the app.
• Exclusive content: Access videos, games or augmented reality filters within the app.
• Loyalty programs: Scan QR to accumulate points or redeem offers.

Success stories of brands that integrated QR into their mobile strategy

Numerous brands have demonstrated the potential of QR codes to drive their mobile strategies.

• Victoria’s Secret: Used QR on billboards to direct users to its online collection, increasing brand awareness and direct e-commerce.
• McDonald’s: Implemented QR on its packaging to facilitate contact tracing during the pandemic, promoting non-contact interactions.
• L’Oreal: Enabled virtual makeup trials through QR codes, improving inventory management and online shopping.

How to generate your QR code: tools and best practices

QR code generation has evolved, offering tools ranging from basic free options to premium platforms with advanced analytics.

To create an effective QR code, it is critical to consider not only the tool, but also design best practices to ensure readability and user impact. In 2026, the focus is on post-print editable QRs with tracking by device, location and time; Beaconstac leads with heat mapping and retargeting, according to AQRHub. Aesthetics is no longer a secondary aspect; it is now a conversion driver, especially when the QR code is integrated with the corporate color palette and embedded logo, which generates a significantly higher trust and scan rate than a generic one.

Free vs premium QR code generators (comparison of functionalities)

The choice of a generator depends on the scale and needs of your campaign.

• Free: They offer static codes, ideal for personal uses or information that will not change. They lack tracking and advanced customization.
• Premium: Enables dynamic codes, tracking, detailed analytics, design customization and management of multiple campaigns.
• Examples: QR Code Tiger and ME-QR are popular premium options for dynamic codes.

Step by step to create a dynamic QR code with tracking

1. Select a premium generator: Choose a platform that offers dynamic codes and tracking features, such as Beaconstac or QR Code Generator.
2. Define the type of content: URL, app download, vCard, PDF, etc.
3. Enter the information: Paste the target link or the data you wish to encode.
4. Customize the design: Add your logo, change the colors to match your brand and adjust the shape.
5. Generate and download: Get the code in high quality formats (SVG, PNG) for printing.
6. Implement and monitor: Place the QR on your materials and use the generator control panel to track scans.

Best design practices: size, contrast, safety zone

Proper design ensures readability and optimizes the user experience.

• Minimum size: For close scanning distance (15-30 cm), the recommended minimum size is 2×2 cm.
• Contrast: Ensure a high contrast between the dark modules and the light background. Avoid color combinations such as light yellow on white.
• Safety zone: Leave a margin of white space around the code to avoid interference with other graphic elements.

Common mistakes when implementing QR codes and how to avoid them

Avoiding these mistakes is key to the success of your QR code campaigns.

• Do not test the code: Always scan the QR on different devices and light conditions before printing.
• Destination not optimized: Make sure the destination URL is mobile-friendly and works properly.
• Lack of call to action (CTA): Guide the user with clear text such as “Scan to download” or “Scan to view menu”.
• Irrelevant content: The content to which the QR directs must be valuable and relevant to the user.

Comparison of QR Code Generators for Businesses

This table compares the main platforms for generating dynamic QR codes, evaluating key functionalities such as tracking, personalization, integrations and pricing, to help you choose the most suitable tool for your mobile marketing needs.

How to measure the performance of your QR codes

Measuring the performance of QR codes is essential to justify the investment and optimize future campaigns. This is only possible with dynamic QR codes, which allow data tracking.

The ability to measure the performance of a physical asset was nearly impossible a decade ago; today it’s an exact science thanks to embedded analytics. Every QR code scan acts as a measurable signal, connecting offline and online interactions in a unified view, which Bitly highlights for multi-touch attribution. By 2026, no outdoor marketing budget will be without this traceability.

Key metrics: scans, conversions, geographic location, devices

Tracking these metrics provides a clear view of the impact of your QR codes.

• Number of scans: Indicates the level of interest and visibility of the code.
• Conversion rate: Measures how many scans result in the desired action (download, purchase, registration).
• Geographic location: Allows identification of the areas of greatest interaction.
• Device type: Helps optimize content for different mobile platforms.

Integration of QR codes with analytics and CRM tools

Connecting QR code data with your existing analytics platforms is crucial for a holistic view of the customer.

• Google Analytics: Use UTM parameters in your dynamic URLs to track traffic coming from QR.
• CRM (Customer Relationship Management)Integrates scan data to enrich your customer profiles and personalize communications.
• MMPs (Mobile Measurement Partners): Platforms such as Singular or Affise MMP allow detailed cross-platform attribution of QR scans to in-app installations and events.

Data-driven optimization: A/B testing of designs and locations

Constant experimentation is the key to improving the performance of your QR codes.

• Design: Try different colors, logos or calls to action to see which one generates the most scans.
• Placement: Experiment with placement of codes on different materials or outlets.
• Content: Vary the offer or message the QR addresses to find what resonates best with your audience.

How to connect QR codes to your mobile attribution strategy

QR codes are a vital component in multi-touch attribution, allowing you to measure the impact of offline channels in the mobile funnel.

To connect QRs to your attribution strategy, it is critical to use unique deep links and tracking parameters for each code or campaign. This allows MMPs such as Singular or Affise MMP to correctly attribute installs and in-app events to the specific offline source of the QR. It is important to test QRs on multiple iOS and Android devices to ensure that deep links work and that attribution parameters are correctly recorded in MMP dashboards.

Key Points

• QR codes are an essential tool for connecting offline and online strategies, driving mobile marketing and app adoption.
• The choice between static and dynamic QR codes is fundamental, being the dynamic ones essential for tracking and optimizing campaigns in both Google Ads and Apple Search Ads.
• Customization with brand logos and colors, along with a clear call to action, significantly increases scan rates and user confidence.
• Performance measurement through key metrics and integration with analytics and CRM tools is crucial to justify ROI.
• Implementing a strategic framework such as SCAN (Strategy, Context, Analytics, Next-action) ensures that QR codes are measurable conversion tools.

Conclusion: Integrate QR codes into your mobile strategy

QR codes have transcended their initial use to become a fundamental pillar of mobile marketing and user experience in apps. Their ability to seamlessly connect the physical and digital worlds, coupled with the ability to measure and optimize every interaction, positions them as an indispensable tool for any company looking to grow in today’s digital ecosystem.

To take full advantage of its potential, it is crucial to adopt a strategic approach, prioritizing dynamic code, careful customization and robust integration with your analytics tools. At Actualizatec, we are experts in helping companies navigate the complex world of app development and marketing. We can advise you so that your QR codes are not just a decorative element, but a measurable growth engine for your app.

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Frequently Asked Questions

What is a QR code and what is it for?

A QR code is a two-dimensional barcode that stores information in a pattern of dots, designed to be read quickly by a smartphone camera. It serves to connect the physical world with the digital world, allowing you to access websites, download apps, make payments, or share contact information instantly.

What is the difference between a static and a dynamic QR code?

The main difference lies in flexibility and traceability; a static QR code contains fixed information that cannot be changed once generated, while a dynamic QR code allows its content or destination to be changed at any time and provides detailed scanning metrics such as location and device type.

How can I create a free QR code for my business?

You can create static QR codes for free using platforms such as QR Code Generator Free, ME-QR or QR Code Monkey, which allow you to encode URLs or plain text. However, these free versions often lack advanced features such as scan tracking or post-editing, which are essential for marketing campaigns.

What information can a QR code contain?

A QR code can contain a wide variety of information, including website URLs, plain text, contact data (vCard), Wi-Fi network credentials, payment information, email addresses, phone numbers, GPS coordinates, and links to PDF files or videos.

How can I measure how many people scan my QR code?

Only dynamic QR codes allow you to measure the number of scans, the geographic location of users, the type of device used and the time of scanning. To do this, you need to use a premium QR code generator that integrates analytics tools and a dashboard to visualize these metrics.

Can I customize the design of my QR code with my logo?

Yes, it is possible to customize the design of your QR code by incorporating your logo, using your brand colors and adjusting the shapes of the modules. However, it is crucial to maintain a high contrast and safety zone around the code to ensure legibility and avoid scanning problems.

Do QR codes work on any smartphone?

QR codes work on the vast majority of modern smartphones; iOS (as of iOS 11) and Android (as of Android 9) devices can read QR codes directly with the native camera without the need for additional apps. For older versions, there are numerous QR reading apps available.

How much does it cost to generate QR codes for my company?

The cost of generating QR codes for a company varies; static codes are usually free, but lack advanced features. Premium plans for dynamic codes can range from €5-35 per month for basic tracking and customization functionality, while enterprise plans with advanced analytics and large volumes can exceed €50-200 per month.

How large does a QR code need to be for it to scan correctly?

To ensure proper scanning, a QR code should be at least 2×2 centimeters in size when scanning at close range, such as on brochures. As a rule of thumb, the size of the QR should be approximately one tenth of the scanning distance, and it is essential to ensure good contrast and a clear security zone around the code.

How can I use QR codes to get more downloads of my app?

You can use QR codes in point-of-sale, print advertising, product packaging and events to direct users directly to download your app from app stores or to an optimized landing page. It is recommended to use dynamic codes with deep linking and tracking to attribute downloads to the specific QR campaign.

Glossary of Key Terms

QR Code: A two-dimensional barcode that stores information and can be quickly scanned by mobile devices.

Static QR Code: A QR code with fixed information that cannot be changed after its generation.

Dynamic QR Code: A QR code that allows you to modify its content or destination post-generation and offers scan tracking features.

Deep Linking: A technology that allows a link to take a user directly to specific content within a mobile application, rather than just opening the app or a web page.

Offline-to-Online Marketing (O2O): Marketing strategies that use physical channels to direct customers to online experiences or purchases.

MMP (Mobile Measurement Partner): Third-party platforms that help companies measure and attribute in-app installs and events to their marketing sources.

Mobile Attribution: The process of identifying which marketing channels or touch points contributed to a desired user action on a mobile app, such as a download or purchase.

CTA (Call to Action): A message or phrase that prompts the user to perform a specific action, such as “Scan to download” or “Click here”.