What is The Difference Between Localization and Globalization Testing

Understanding the difference between localization and globalization testing is very important for developers. Are you looking to expand your product to a global audience? Localization and globalization testing will help you make your product accessible and appealing to users around the world.

What is Localization Testing?

Localization testing is a process of validating the functionality of content and user interface (UI) from the perspective of localization, which means adapting content and UI to meet the language and cultural requirements of a specific region. In other words, it ensures that the application is appropriate for the targeted region or culture.

Here are some components that are included in localization testing:

  • Translated text
  • Keyboard usage
  • Address format and sequence
  • Graphics and other visual elements consistent with the culture
  • Handling of time and currency format for the specific region
  • Data alignment

What is Globalization Testing?

On the other hand, globalization testing focuses on creating products and features that appeal to a global audience. It is an activity that typically starts from the conceptual stage to ensure that the product has global appeal. The development of features, content, and UI is supported to cater to the localization of a given cultural or linguistic environment. From the initial stages of product design and development, various aspects of localization should be considered.

Here are some best practices for globalization testing:

  • Supporting multiple languages
  • Supporting different regions, linguistic environments, etc.
  • Separating resources (strings, UI elements, etc.) from implementation
  • Supporting different number formats
  • Supporting different text formats (i.e., left-to-right, right-to-left)

Let's look at some essential differences between globalization testing and localization testing:


Globalization Testing

Localization Testing


Validates software applications supporting multiple languages and multiple features.

Validates software applications supporting an exact language that can only be used in specific regions.


In globalized products, code and messages or information are separate. Through globalization testing, we can make software available in different languages without redesigning the entire software.

Localization testing does not require the localization of products.


It primarily emphasizes the user as a general audience.

It primarily emphasizes a small group of users from a given culture or region.


Globalization testing will help us identify potential issues and errors in software, thereby preventing its expected performance.

Localization testing will help us detect printing errors.


It verifies all features of software products with the help of all possible international inputs.

Localization testing will help us verify all application resources.


During globalization testing, the testing engineer assumes that the software product is being tested and used globally.

During localization testing, the testing engineer assumes that the software product is being tested and will be used by a specific user group in a specific region.


Globalization testing verifies different currency formats such as address and phone number formats that are maintained by the software application.

Localization testing verifies specific address formats, currency formats, and phone number formats working correctly.


It helps separate testing engineers from translators and engineers and ensures a detailed and independent approach is taken.

It helps reduce testing time, and it is only subsequently completed in a language environment.


Globalization testing takes relative time to implement testing.

Localization testing takes less time to implement testing.


In globalization testing, we have formal error reports.

Localization testing helps us reduce overall testing and support costs.


The differences between globalization and localization testing are clear now. Globalization testing focuses on making software products appeal to a global audience, while localization testing focuses on verifying that software products support specific languages and cultural requirements. While both tests are essential, they have significant differences in their goals and methods. By understanding these differences, software developers and testers can ensure that their products are ready for use by users worldwide.

If you're looking for comprehensive localization testing services for your overseas products, I recommend WeTest LQA. They provide expert testing for language semantics, cultural compliance, UI layout, and audio and video quality to help you improve your product quality. With their multilingual coverage, real device testing, and efficient and high-quality service, they can quickly discover and solve problems related to hyperframe, poor visual effects, missed translation, user incomprehension, and text truncation. By preventing cultural compliance issues and reducing the risk of user complaints, WeTest LQA can help you avoid legal problems and improve your product's user experience.

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