Overview

• Users can append up to 10,000 characters as an expandable block attached to a post via a new text-attachment icon.
• Attachments support bold, italics, underline, strikethrough and emojis, and they surface any included external link prominently for clicks.
• Meta frames the feature for authors and journalists who want to share excerpts and direct audiences to newsletters, blogs and podcasts.
• The capability is free and not being monetized at launch, with additional formatting enhancements planned.
• At launch the content is not indexed by search engines, does not federate to ActivityPub services, and lacks media embedding or advanced layout.