Every Locale, Done Right

Localization testing

Dates, currencies, decimal points, and units all change when your users do. Verify that your application gets every locale right, from anywhere in the world.
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The Basics

What is localization testing?

We live in a globally connected world, and yet the differences between cultures run deep. If your site is available worldwide, you have to account for them, and it goes well beyond translated text.

Localization (often shortened to L8N) is about handling differences in number formats, currencies, and more. In Germany, for example, dates follow the DD/MM/YY pattern and numbers are written as 1.234,56 rather than 1,234.56. Localization testing checks whether your site handles all of these cultural and linguistic differences correctly.

Coding, CI/CD, and developer tools connected to an AI software testing platform through MCP
Stacked application test layers representing automated tests that write, update, and fix themselves as the UI changes.
Why It Matters

Why is localization testing essential?

Multinational companies cannot afford to get localization wrong. Mistakes risk offending users, or simply making your content unreadable to a global audience. If a film releases on November 5th, it matters enormously whether that appears as 5/11, 11/5, or 11.05.

Units bring their own traps. A US pint, for instance, is about 20% smaller than a British one. And the real challenge is the sheer number of variables involved, on top of confirming that your site defaults to the right localization settings on its own.

How Functionize Helps

The world's leading AI-powered testing platform

Functionize makes localization testing genuinely straightforward. Upload a spreadsheet containing every variable you want covered, and the system works through each test, validating against the correct data for each locale. Prefer databases? Drive the same tests from SQL instead.

Every Functionize test also runs from our Test Cloud in its own virtual machine, and can launch from anywhere on the planet. That makes it easy to verify your application picks the correct L8N defaults for each region.

Coding, CI/CD, and developer tools connected to an AI software testing platform through MCP
Test Dara Management in Studio: import your CSV table with all the data and map it simply by prompting - system will do the rest
Data Without the Drama

Advanced Test Data Management

Setting up data-driven testing is usually a nightmare. You have to figure out how to reach the data source, label every item, and wire it all into your scripts.

Functionize Test Data Management (TDM) turns that into a few clicks, and an AI-powered auto-mapping mode does most of the wiring for you.

Test From Anywhere

Geographic localization testing

Nothing beats testing from a real machine in the target country, but maintaining hardware around the world is not realistic for anyone.

The Functionize Test Cloud gives you the next best thing: virtual machines distributed across the globe, so your tests experience your application the way local users do.

Test Dara Management in Studio: import your CSV table with all the data and map it simply by prompting - system will do the rest
Generate any random data on-the-fly directly in the chat
Beyond Your Own Code

End-to-end localization testing

Chances are your app relies on one or more plugins or other third party content, and it is vital to confirm that this content also picks up the correct locale.

Unlike traditional test scripts, Functionize tests have full visibility into embedded content, so you can fold it into every localization test you run.

Start Proving Quality

Right format. Right currency. Every region.

Run localization tests from around the world without leaving your desk.
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