Stress-Test Interface Text while Preserving Placeholders and Markup

How to Use This Tool

Accent and expand UI strings without corrupting common interpolation tokens. Generate accented, expanded pseudo-localized interface text, preserve placeholders and HTML tags, compare lengths, and export test-ready strings.

The work this page finishes

Localization defects often appear only after labels expand, accents render and placeholders survive; ordinary translation does not create a controlled stress fixture. For Pseudo Localization Test, the row-preserving workspace makes a correction repeatable without rebuilding a prompt or transmitting the source file.

Deterministic workflow

Mask common brace, printf, template and HTML-tag tokens, accent Latin letters deterministically, append the selected expansion padding, restore tokens and optionally bracket the result. For Pseudo Localization Test, this page accepts at most 5,000 records and 2 MB of text; rejected items retain their row references while valid items remain available.

Why a dedicated interface helps

Paste the result into a test build to find clipping, concatenation and font gaps; it is deliberately unreadable test data rather than a translation. For Pseudo Localization Test, immediate recalculation and a stable export are useful when the same rule must be applied consistently across a list instead of explained one item at a time.

Assumptions

• The input is test content, not production translation.
• Protected token forms match the documented patterns.
• Expansion padding is a layout stress signal, not linguistic text.

For Pseudo Localization Test, retain the original source until the destination accepts the result; processing stays in this tab, although the device and installed extensions remain part of the user's security boundary.

Limitations and review boundary

The masker cannot recognize every template language, ICU message grammar or custom markup; inspect placeholder counts before replacing production fixtures. For Pseudo Localization Test, no supplied URL is requested and no pasted markup or code is executed; output is inserted through text-only DOM operations.

Verification and provenance

The implementation was checked against W3C Internationalization — Pseudotranslation on 2026-08-26, with fixtures for a known answer, an invalid input and a batch-specific edge condition. The example preserves four protected tokens while accenting visible English letters and expanding the output by the selected percentage.