you really need to take a screenshot for the meme, please at least just use the VisualEditor, which is a what-you-see-is-what-you-get (WYSIWYG) editor that will allow for a near-identical screenshot without actually publishing. If it’s not perfectly identical, you can go to the source editor and click ‘Preview’, which will actually render an identical page without publishing.

Or just press F12 and edit stuff right there.