StringGuard — Offline Localization QA for CSV & JSON

Catch the string bugs players always find.

Preflight QA, not another AI translator.

StringGuard audits CSV and JSON localization files before release. Drop in your data, inspect every finding, edit target strings, and export a clean file or structured QA report—without uploading a single byte.

What it catches:

• Missing, empty, and source-identical translations

• Dropped or renamed variables: {player}, {{count}}, %s, %1$s, %(name)s, $name$

• Broken or improperly nested HTML and BBCode formatting

• Target strings likely to overflow fixed UI

• Zero-width characters, non-breaking spaces, and whitespace drift

• Duplicate or missing keys

• Changed line-break counts

What you get:

• Offline browser app bundle: no installation, account, or server

• CSV and JSON import

• Editable translations with row re-scanning

• Clean CSV export that preserves additional source columns

• Structured JSON QA report

• Protected pseudolocalization export

• English and Spanish interface

• Included CSV/JSON inputs and generated example outputs

• Commercial-use license and launch-edition updates

Privacy by design: no analytics, cookies, third-party libraries, or network calls. Your localization data stays on your device.

Open index.html in a modern browser and start scanning. Always keep a backup of the original file.

Interactive demo: https://stringguard-offline-qa.ederjesuscontrerasme.chatgpt.site

AI disclosure: StringGuard was developed with AI assistance under human direction and validated with automated functional tests. The cover image is AI-generated. The downloadable tool contains no generative AI, external model, or third-party runtime code.