Provides at-a-glance weather information directly in the browser toolbar without needing to visit a weather website, with auto-updating temperature display and full forecast access via popup

1. On browser startup or install, the extension fetches wunderground.com to auto-detect the user's nearest weather station. 2. A service worker periodically scrapes the Weather Underground page for the current temperature, feels-like temp, and weather icon. 3. The temperature is displayed as badge text on the toolbar icon; the icon updates to match current conditions. 4. Clicking the toolbar icon opens a popup with an iframe showing the full Weather Underground forecast page (with ads stripped via content scripts). 5. Users can configure custom stations, units, refresh interval, and popup size via the options page.

Target users: General users who want quick weather information in their browser / Users who frequently check Weather Underground for forecasts / Users who want a lightweight, non-intrusive weather toolbar widget

The extension embeds wunderground.com in an iframe and scrapes HTML for weather data — fragile if Weather Underground changes their page structure
No explicit API key visible for api.weather.com calls (may rely on the referer header trick in rules.json)
Weather Underground itself has premium services but the extension does not gate any features behind them

Monetization

No paid features detected

The extension is completely free with no gated features. All features (temperature badge, forecast display, multiple locations, metric/imperial units, custom stations, radar map via iframe) are available without payment. The 'Support Development' button (options/index.js line 146-148) links to the homepage with a donate query parameter — this is a voluntary donation link, not a feature gate. All keyword hits for 'pro', 'license', 'upgrade' are false positives from Mozilla Public License headers and the extension-update FAQ label. No payment platform integrations exist in the codebase.

Confidence: 95
Payment platform: --
Source: AI / High
Login required: No
Reason: The extension does not implement any login UI, does not call authentication APIs, and does not require user accounts. Weather data is fetched publicly from wunderground.com (HTML scraping) and api.weather.com (geolocation) without any auth tokens. All settings are stored locally via chrome.storage.local. The 'wuAccount' selector in clean.js (line 70) is an ad-removal rule to hide the account link from the embedded Weather Underground page, not a login requirement.

Permission risk

High-risk permissions

This estimate uses declared permissions and host permissions to assess access scope and sensitivity.

敏感权限：declarativeNetRequestWithHostAccess
扩展能力较强：storage

Publisher

chYer

Independent publisher

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Permissions

Host access