Auto Exchange Rate

# Chrome Web Store Listing Draft ## Extension Name Auto Exchange Rate ## Short Description Convert selected foreign currency, crypto, and precious metal amounts to Chinese Yuan. ## Detailed Description Auto Exchange Rate helps Chinese-speaking users quickly understand foreign prices while browsing the web. Select a supported amount on any webpage, and the extension shows an RMB conversion popup near the selected text. It supports common fiat currencies, selected crypto assets, and precious metals. Supported examples: - `$100` - `EUR 99` - `120 AUD` - `S$39 SGD` - `BTC 0.015` - `0.5 ETH` - `XAU 1` - `12 XAG` Features: - Converts selected amounts to CNY / RMB. - Shows Chinese asset names such as 美元, 欧元, 黄金, 白银, 比特币. - Shows precious metals in yuan per gram for easier understanding. - Supports active lookup from the extension popup, such as `USD`, `黄金`, `白银`, `BTC`, or `ETH`. - Caches recent rates locally to reduce repeated requests. - Falls back to cached rates when providers are temporarily unavailable. - Does not modify webpage content. Supported assets: - Fiat: USD, EUR, GBP, JPY, HKD, CAD, AUD, SGD - Crypto: BTC, ETH, SOL - Precious metals: XAU, XAG, XPT, XPD ## Category Productivity ## Language Chinese (Simplified), English ## Single Purpose Statement This extension converts selected currency, crypto, and precious metal amounts on webpages into Chinese Yuan. ## Permission Justification ### storage Used to cache recent exchange rates and asset prices locally in the browser. ### Host permission: open.er-api.com Used to fetch fiat exchange rates to CNY. ### Host permission: convertz.app Used to fetch crypto and precious metal USD reference prices, which are then converted to CNY. ### Content script access on webpages Used to read the user's selected text and display a conversion overlay near the selection. ## Privacy Practices The extension does not collect or sell personal data. Selected text is parsed locally. The extension only requests exchange-rate data from public rate providers and stores recent rates locally in `chrome.storage.local`. ## Suggested Screenshots Prepare screenshots showing: - Selecting `S$39 SGD` and seeing a CNY popup. - Selecting `BTC 0.015` and seeing an RMB conversion. - Selecting `XAU 1` and seeing yuan per gram. - Popup active lookup for `黄金` or `USD`.