Unverified50% confidenceFactExact time
2014 年 Jeff Atwood 等人发起 CommonMark 项目以建立严格的 Markdown 规范，GitHub Flavored Markdown（GFM）是 CommonMark 的超集，增加了表格、任务列表、删除线等扩展语法
1
Sources
50%
Confidence
Long-term
Relevance
8/27/2026
First Seen
Sources
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Related Claims
UnverifiedGitHub Flavored Markdown (GFM) added table, task list, and fenced code block syntax, with its table syntax using pipe characters to separate columns.74% similarUnverifiedDue to ambiguities in the original Markdown specification, standardized specifications such as CommonMark and GitHub Flavored Markdown later emerged.71% similarUnverifiedGitHub Flavored Markdown (GFM) became the de facto standard in the developer ecosystem, with nearly all code hosting platforms, documentation systems, and AI chat interfaces supporting Markdown rendering by default.70% similarUnverifiedMarkdown是GitHub、Stack Overflow、Notion等平台的标准格式63% similarUnverifiedMarkdown was designed by John Gruber in 2004 and is a plain-text format widely used by technical platforms such as GitHub, Notion, and Reddit.58% similar
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