Inline Currency Converter

<About EUR to KRW>
EUR to KRW automatically detects Euro (€) amounts on any webpage and displays the Korean Won equivalent as a subtle tooltip right next to the original value. No copy-pasting, no switching tabs, no mental math.

<How it works>
Whenever you visit a page containing Euro amounts — whether it's a business report, a Google Slides deck, a Confluence wiki, or any website — the extension quietly scans the content and overlays lightweight KRW tooltips. The exchange rate is fetched from a live API and cached for 24 hours, so conversions are always up to date without slowing down your browsing.

<Key features>
- Live exchange rates — updated daily via open.er-api.com (with automatic fallback)
- Works across all websites — general web, Google Docs, Slides, Confluence, and more
- Smart tooltip positioning — tooltips appear above or below the source text without blocking content
- Zero DOM modification — original page content is never altered
- Instant on/off toggle — disable conversions with a single click from the popup
- Manual rate refresh — force a rate update anytime from the extension popup
- Fully offline-aware — uses cached rate when network is unavailable