Preview extension manifest
ChromeStats allows you to preview the extension manifest to quickly examine its permissions. The extension manifest declares the capabilities and permissions of an extension. For example, whether the extension can access your network request across all tabs, modify your web page, or override your search engine, etc.
You can examine extension manifest to avoid installing Chrome extensions with dangerous permissions that may harm your browsers.
Chrome is asking developers to migrate to Manifest V3 by the end of 2022. Manifest V3 made it much harder for extensions to access network requests. You can track the manifest V3 migration progress here.