Show HN: PasteClean – A small tool to clean ChatGPT output for Outlook and email
bdtrt Tuesday, January 20, 2026
Hi HN,
I built PasteClean, a small, free, client-side tool to fix a problem I kept running into when pasting ChatGPT output into Outlook and other email clients.
When you paste AI-generated text into Outlook, bullet points and paragraphs often end up with extra spacing. This happens because of how lists and paragraphs are represented in HTML and how Outlook renders them.
PasteClean lets you: - Paste content from ChatGPT/Claude/Gemini/Perplexity (or anywhere) - Optionally edit it - Clean up spacing, lists, and formatting - Copy the result as cleaned HTML
Everything runs entirely in the browser — nothing is sent to a server. This is intentionally a narrow utility, not an AI product. It just fixes formatting issues that show up in real workflows.
I’d love feedback, especially: - Whether this solves the Outlook/email spacing issue for you - Edge cases it doesn’t handle well - Any formatting rules you’d want as options
Link: https://pasteclean.app