Free Tool

Pseudo-Localizer

Test your UI's i18n readiness — accented characters, expansion padding, and RTL override, all in your browser.

Source text (English)

All processing happens in your browser — nothing is uploaded.

Add expansion padding

Wraps output in [!! … !!] with 40% extra length to simulate translation expansion.

Use RTL

Wraps output with RTL override characters for right-to-left testing.

Pseudo-localized output

Read-only — copy and paste into your UI strings.

What is pseudo-localization?

Pseudo-localization is a UI testing technique. It replaces each character with an accented equivalent — your app stays readable in English while revealing which strings aren't wired up for translation. Combine with expansion padding to catch layout breakage before real translations arrive, and RTL mode to verify bidirectional support.

Ready to ship real translations?

Once your UI is i18n-ready, Vernacia translates entire documents and UI bundles into 73 languages — preserving formatting.

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Once your UI is i18n-ready, translate with Vernacia — start free, 7-day free trial.

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