Purifai is an app-aware copy/paste tool that removes unsupported formatting. When text copied from AI tools or the web is pasted, it often has unwanted fonts and headings, looking obviously pasted. Pasting text-only removes necessary elements like bold and lists, but Purifai cleans text to fit naturally into the target app, keeping paragraphs, lists, and spacing intact. It's a lightweight 11MB app that works fully offline with no tracking.