Tool · 10 min read

Test Your App with Pseudolocales

Google Android · Android Developers Free Intermediate

This is the cheapest way to catch translation problems before you have any translations. Pseudolocalization swaps your text for longer, accented placeholder strings so layout breaks show up while you are still designing. If you build on Android, you can turn this on today and immediately see which screens will not survive a real language.

  • Pseudolocales simulate longer text and different scripts with no translator needed
  • Turn it on early to surface clipping and layout breaks during development
  • It also flags hard coded strings you forgot to externalize

The question it answers

  1. How do I design an app that works well for users who aren't fluent in English and may switch languages?

Read with it

  1. This is Google's own field research on building for people coming online in markets like India, and it names the exact... Google Design Article · ~12 min read Connectivity, Culture, and Credit: Designing for the Next Billion Users Google Design (Next Billion Users team)
  2. This is the plain, research backed baseline for the whole question: it draws the line between translating an interface and... Nielsen Norman Group Article · About a 12 minute read Modify Your Design for Global Audiences: Crosscultural UX Design Feifei Liu
  3. If any of your users read Urdu, Arabic, or another right to left script, your whole layout may need to mirror, and this is the... Material Design 3 Article · 10 min read Bidirectionality and RTL Google Material Design
  4. A practical designer facing walkthrough of building interfaces that survive translation, including how languages fall into... Material Design 3 Article · 12 min read Principles and Techniques for Effective Localization Google Material Design
  5. Your short answer says never bury the language switch, and this is the definitive piece on getting that one control right. It... Smashing Magazine Article · 20 min read Designing A Perfect Language Selector UX Vitaly Friedman
  6. A tighter, pattern focused companion to the language selector deep dive, good when you just want the checklist. It covers... Smart Interface Design Patterns Article · 10 min read Language Selector UX (Smart Interface Design Patterns) Vitaly Friedman
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