Most pages do not suffer from a lack of information. They suffer from a lack of order. When a reader arrives, they are not looking for everything you know, they are looking for the one thing that answers the question in their head.
Cutting is design
Editing is usually filed under writing, but it behaves much more like layout. Removing a paragraph changes the rhythm of a page in the same way removing a column changes a grid. Both are decisions about what deserves the reader's limited attention.
A practical habit: after a draft is finished, delete the first paragraph. It is almost always throat-clearing, and the second paragraph is almost always the real opening.
What stays
Keep the specific over the general. Keep the sentence that would be hard to write from memory. Keep anything a reader could disagree with, because that is the part carrying an actual idea.
The rest can go, and the page will feel more confident for it.
