How to strip images from pasted content in the Block Editor?

[gion-andri]

I’m trying to find a way to strip all images when a user pastes external content into the block editor (for example, from another website or a Word document).

I’ve looked for a hook or filter to modify the paste behavior, but I can’t find a clear way to intercept or change what gets passed into the paste handler.

Is there a way to:

• modify the pasteHandler, or
• filter or sanitize the pasted content before it’s inserted into the editor?

Ideally, I’d like to remove any <img> tags (or block equivalents) before they are inserted into the post content.

Thanks in advance for any pointers!