Preserve Link Attributes in Post Content
Keep rel and target attributes on links in post content
Problem: the post editor strips rel and target from links. Affiliate and sponsored links must carry rel="sponsored" (Google's link guidelines), so every post is non-compliant by default.
Proposal: keep the attributes as written, and add a "sponsored / nofollow / new tab" toggle in the link dialog.
Workaround today: a footer script re-adds rel after load, which crawlers that read the HTML never see.
Pending