Can't use img tags

[UCyborg]

If I try to add an image like:

Code: Select all

[img]https://i.imgur.com/p10HZnJ.png[/img]

It outputs an error that it can't get the dimensions of the image and that user should check if the URL is correct, which I'm sure it is in this case.

[vannilla]

It seems to be caused by servers putting some kind of protection against "hotlinking" files.
I tried various sites and some work, others don't.
Examples of broken direct embedding: Imgur; my personal GoToSocial instance.
Examples of working direct embedding: the vertical "support us" banner on the Pale Moon homepage; avatars on Codeberg.org.

[adoxa]

It seems in Imgur's case if the Accept header contains text/html then that's what you get (redirecting back to its page).

[UCyborg]

Their links do behave strangely as you normally can't open the image directly, but they have the option to generate phpBB code to embed image right in their UI, so it should "just work" on any phpBB forum. First time I notice this issue.

[Moonchild]

It's not our problem. It's the issue with pretending to link to an image but actually responding with a document instead. Basically the URL isn't related to the actual image. Server's content-type response headers always trump any "extension" the URL might contain, per spec.
Since there is no actual image on the other end of the line, the forum can't get image data from what is returned, and as a result will refuse to put the content up. An image URL should point to an image, not something else. That's a safety feature of the forum.

[UCyborg]

And somehow your forum is the only one I know that has this "feature".