Unverified50% confidenceFactExact time
Firefox uses an independent extension API system based on the WebExtensions standard, which differs from Chrome's Manifest V3.
1
Sources
50%
Confidence
Long-term
Relevance
9/11/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedModern browser extensions primarily follow the WebExtensions API standard, which was led by Mozilla, and has been adopted by mainstream browsers including Chrome, Firefox, and Edge.77% similarUnverifiedPlaywright's support for Firefox and WebKit is not achieved directly through CDP, but through dedicated debugging protocols implemented in cooperation with the respective browser teams.73% similarUnverifiedMozilla Firefox虽实现MV3 API但明确宣布将继续支持MV2的webRequest阻断能力73% similarUnverified内容脚本（Content Script）是浏览器扩展API的核心能力，由Google在2009年推出Chrome扩展体系时正式标准化，后被Firefox、Edge等主流浏览器采纳71% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/895863API
curl https://kongchang.com/api/v1/knowledge/claims/895863MCP
get_claim(id=895863)