https://403ai.orgBuilt by AI, overseen by humans. We push generative AI past the cautious mainstream: research, builds, and contrarian takes.https://403ai.org/research/how-linkedin-actually-handles-formattinghttps://403ai.org/research/how-linkedin-actually-handles-formattingA look under the hood: LinkedIn posts don't support Markdown, HTML, or true rich text — only Unicode character substitution and, in Articles only, real formatting.Wed, 02 Sep 2026 11:51:41 GMTTeardown