We’re all buried in words we don’t have time to read — 40-page reports, dense contracts, endless email threads, hour-long video transcripts. The instinct is to skim and hope you catch the important bits. There’s a better way. AI is genuinely brilliant at reading long documents and pulling out exactly what you need, and once you’ve got a repeatable process it takes minutes, not hours. Here’s the exact workflow I use across my businesses every day, with prompts you can copy.
Don’t just say “summarise this”
The single biggest mistake is pasting a document and typing “summarise this.” You’ll get a bland, generic recap that misses what you actually care about. A summary is only useful if it’s built around a purpose. Before you prompt, decide what you need out of the document: the decision you have to make, the question you need answered, or the action you have to take. Then tell the AI that upfront so it reads the document through your lens instead of giving you a neutral book report.
Get the right file into the AI first
For anything longer than a couple of pages, don’t copy-paste raw text — upload the actual file. Claude, ChatGPT and Google’s NotebookLM all let you drop in PDFs, Word docs and slide decks directly, which preserves the structure (headings, tables, page numbers) and lets you ask follow-up questions against the whole thing. NotebookLM is my pick when I’ve got several documents to cross-reference at once, because it keeps them all in one place and cites the exact source for every answer. Upload first, then interrogate.
Use the layered summary technique
One summary is rarely enough. The trick professionals use is to summarise in layers — start wide, then zoom in only where it matters. Ask for a one-paragraph overview first. Read it, spot the section that’s most relevant to you, and then ask the AI to expand just that part in detail. This stops you drowning in a giant wall of summary and means you only spend attention where it pays off.
Summarise videos, calls and email threads too
This isn’t just for PDFs. Paste a YouTube transcript and ask for the key takeaways so you get the value of a 45-minute video in two minutes. Drop in a messy email thread and ask “what was actually decided and what do I need to do?” Feed it your meeting notes and ask for a clean list of action items with owners. Any wall of text — spoken or written — is fair game, and this is where the real hours get saved.
Always verify before you act on it
AI summaries are fast, but they can quietly drop a crucial detail or, occasionally, invent one. The higher the stakes, the more you check. For a casual read, trust it. For a contract, a legal document or anything you’re about to make a decision on, ask the AI to point you to the exact section or page for each claim, then read those specific parts yourself. That way you get the speed of AI with the safety of your own eyes on what matters. If you want the full method for catching AI mistakes, I covered it in how to spot AI hallucinations.
Turn it into a repeatable habit
The people who get the most out of this don’t reinvent the prompt every time — they save a couple of go-to prompts and reuse them. Keep one “quick overview” prompt and one “deep decision” prompt in a notes app, and reading long documents stops being a chore you avoid. It becomes a two-minute step you do without thinking. Start with the next long thing that lands in your inbox: upload it, tell the AI your goal, and let it do the reading so you can do the deciding.