X/Twitter Country Flags & Blocker 作者： incconu_two

Adds country flags to X/Twitter usernames and lets you auto-hide posts from specific countries. Fast, private, and community-driven.

This extension adds a country flag emoji next to usernames on your timeline, letting you instantly see the account's location context. It also features a powerful "Block by Country" mode to automatically hide tweets from specific regions.

🚀 Key Features:
🌎 Location Flags: Automatically detects and displays the user's country flag next to their name. Handles regions like "Europe" or "North America" with globe icons.
🛡️ Auto-Hide Posts: Select specific countries to block. Tweets from those locations will vanish from your feed instantly.
⚡ Community Database: Powered by a shared, crowdsourced database. This makes lookups lightning-fast (50ms) and saves your Twitter API limits.
🖥️ Windows Support: Fixes the invisible flag glitch on Windows by rendering high-quality Twitter emojis (Twemoji).
🔒 Privacy First:
We do not store your browsing history.
We do not store IP addresses (they are cryptographically hashed for spam prevention).
The extension only looks at public username and location data.

How it works:
The extension uses a smart 3-step lookup system (Local Cache -> Community Cloud -> Twitter API) to find locations without slowing down your browsing or hitting rate limits. It even prefetches data as you scroll so flags appear instantly.

Note: This project is open source. It is not affiliated with X Corp.