Keyboard shortcut to summarise blog posts, PDFs, YouTube videos and Google Docs
I’ve just released Such Summary: a browser extension for summarising blog posts, PDFs, YouTube videos and Google Docs.

The summarisation prompts ask Claude to:
- Assume the reader is PhD-level, well read in AI/ML, EA, longtermism, philosophy, and adjacent domains.
- Use standard acronyms wherever possible (and do not define them).
- Elide obvious contextual filler or hand-holding.
The prompts can be customised in settings.
This was previously one of the most-used features of my personal browser extension. Try it, and let me know how you get on! 1 2
Footnotes
Over the past months, I’ve found that Claude models consistently beat others for high-fidelity summarisation. Sonnet takes roughly as long as Opus for a slightly worse result, so its Opus for “best quality” and Haiku for “fast”. I tried Gemini Flash 2.5 and Llama on Groq for near-instant summaries—fine for basic news articles, but not good for other stuff. ↩