Ability to suggest whether inline previews (url or thumbnails?) are intended to be shown for a given event

[ara4n]

Obviously related to general 'human representation of events' shenanigans

[turt2live]

human representation of events is matrix-org/matrix-spec-proposals#1225

[yyportne]

I'd like to propose that links in html-content support an attribute for controlling URL-Previews.

<a href="http://www.example.com"
   xmlns:matrixhtml="http://www.matrix.org/ns/embedded-html"
   matrixhtml:link-preview="(disable|enable|redundant|…)">My Link</a>

The attribute matrixhtml:link-preview controls URL-preview generation:

• disable: Disables URL-preview for the context-link.
• enable: Enable URL-preview for the context-link.
• redundant: Indicates that URL-previews are redundant und need not be generated (but are allowed).
  (There could also be a matrixhtml:link-preview-reason attribute that contains reasons such as 'redundant')

The context for this request is the following: I am currently developing a bot that reads RSS/RDF-Site-Summary/Atom feeds and posts the extracted content to a matrix room. The matrix events contain several links such as the feed channel, feed-item link, image-link, ... The URL-preview shows duplicate information, which I'd like to prevent.

See attached screenshot.

[vranki]

Any plans on implementing this?

I'd like to use HTML formatting on a Matrix bot that sends messages with large number of links. Currently clients render previews for all links filling the screen and making it practically unusable. @chresan 's proposal would solve the problem.

[uhoreg]

matrix-org/matrix-spec-proposals#2385 is a proposal to fix this