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Internationalization, Mobile, and PWA Basics

Viewport, hreflang, language, manifest, and app-readiness signals.

The hook

A good site should tell browsers and crawlers which language it is, how it adapts to mobile screens, and whether it behaves like an installable app.

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FixWeb checks rendered viewport metadata, hreflang links, manifest links, and language declarations captured by the crawler.

The blast radius

Weak mobile configuration hurts usability; broken hreflang confuses locale targeting; missing manifest metadata limits app-like experiences.

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The rendered snapshot records viewport, html lang, rel=alternate hreflang links, and rel=manifest references.

Ironclad defenses

Set a mobile viewport, keep hreflang complete and reciprocal, set html lang for each locale, and add a manifest when the site should be installable.

// run it on your own app

Keep shipping while FixWeb keeps watch.

FixWeb pressure-tests the public surface of your app the way an attacker would — no agent, no install, no card. We keep researching new vulnerability patterns and turn them into practical checks and paste-ready fixes for Cursor, Claude, and Copilot.

Mobile, PWA & i18n
7
tests fired in this category
modules
1
dedicated mobile, pwa & i18n checks
every scan
98+
tests across all categories
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  • Just paste a URL — we crawl, probe, and report
  • Severity-graded findings, deduped to signal only
  • Current, AI-ready fix prompts you can paste into Cursor, Claude, Copilot
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Internationalization, Mobile, and PWA Basics — Vulnerability Spotlight | FixWeb · FixWeb