Research / Rules / LI-SPECIAL-01
LI-SPECIAL-01
Math, Mermaid, Obsidian syntax, raw HTML, and heading anchors are not live-verified on LinkedIn. This applies to LinkedIn, where the result is unknown.
Affects LinkedIn. Matches math_inline, math_block, mermaid, html_raw, obsidian_wikilink, obsidian_embed, obsidian_callout, obsidian_blockref, link_anchor. Fixture markdown-portability-test-v1.
What happens, per destination
| Destination | Tested surface | Result | Severity | Confidence | Last tested |
|---|---|---|---|---|---|
| LinkedIn desktop web Create post composer | Unknown | Evidence gap | Unknown | Tested 2026-08-24. |
Why, and what to do
The focused standard-post test did not isolate these constructs, so no reliable claim exists yet.
Do this: Check this part of the output yourself before posting.
Limits of this rule
- It describes the surface and date in the table above, not every version, theme, or plugin.
- Reading it in isolation hides the other rules that touch the same draft.
- A rule is only as current as the test date beside it.
Related
- All LinkedIn rules, and the LinkedIn test record.
- The full rule set, also available as rules.json.
- Check your own draft against all five