Question 1

What is Manifest V3?

Accepted Answer

Manifest V3 is the latest version of the Chrome Extension platform manifest file. It replaces background pages with service workers, introduces the action API, and enforces stricter security policies.

Question 2

What is the difference between Manifest V2 and V3?

Accepted Answer

Key differences: background.pages replaced by background.service_worker, browser_action/page_action replaced by action, remotely hosted code is no longer allowed, and webRequest API replaced by declarativeNetRequest for blocking.

Question 3

What permissions does my Chrome extension need?

Accepted Answer

Common permissions include: activeTab, storage, tabs, scripting, alarms, notifications, contextMenus, sidePanel. Only request permissions your extension actually needs to minimize review friction.