Monday, 9:15 a.m. A 38-page lease from a warehousing provider lands in the inbox, and legal wants comments before noon. The operations manager only needs three things: term, penalties and how the contract ends. He reads the whole thing anyway, because there's no other way. Or so he thinks.
Automatic AI document summaries already come with tools many companies have paid for in Microsoft 365 for years. Copilot can summarize a Word file, a PDF or a presentation in seconds, but what you can do depends on your license and on where the file is stored. This guide covers how to summarize documents with AI in each app, what each Copilot tier includes, prompts that work for contracts, reports and minutes, and where you should be skeptical of the output.
If what you need is to summarize email, we covered that in How to use Copilot to summarize email threads. Here we stick to documents.
What you can summarize depending on your license
Microsoft separates Copilot into three experiences, and each user sees a label inside the apps showing which one they have. Based on the Microsoft Copilot overview, this is how they compare for summaries:
| Experience | Copilot license | How it summarizes documents |
|---|---|---|
| Copilot Chat (Basic) | No, included with eligible Microsoft 365 subscriptions | Only files you upload or select in the chat |
| Microsoft 365 Copilot (Basic) | No, but with standard access inside the apps | The above, plus summarizing inside Word and PowerPoint |
| Microsoft 365 Copilot (Premium) | Yes, an add-on license per user | The above, with priority access and automatic search across your work files through Microsoft Graph |
The last column is the difference people notice day to day. Without the license, you hand the document to Copilot. With it, you can ask "summarize the latest version of the warehousing contract" and Copilot finds it among the files you already have permission to open. We explain the other differences in AI in Microsoft 365: what's included today.
Four ways to summarize documents with Copilot
In Copilot Chat, by uploading the file
This is the route almost everyone has. Sign in to Copilot Chat with your work account, use the add content button or drag the file in, and ask for a summary. Microsoft's support page on file upload in Copilot lists a limit of 50 MB per file and up to 20 files per conversation. It accepts PDF, DOCX, XLSX and PPTX, plus images and text files such as TXT, CSV or MD.
IT teams usually ask two things. According to the Copilot Chat FAQ, uploaded files are stored in the user's OneDrive, where they can be deleted at any time, and they aren't used to train the model.
In Word, with the document open
With standard access you can already ask Copilot in Word to summarize the document. If you have the license and the file lives in OneDrive or SharePoint, Word can show an automatic summary as soon as you open it, as long as the document has at least 200 words, according to the Word support article. That same article includes a warning worth taking seriously: Copilot considers the whole document but doesn't always cite content from the later sections.
In OneDrive, without opening the file
From OneDrive you can select one file, or up to five at once, and ask Copilot for a summary. It works with Word, Excel, PowerPoint and PDF files, but not with videos or images, according to the OneDrive guide. It's handy when you have three supplier quotes and want a quick read on each before opening them. When you share a file, you can also attach a Copilot-generated summary so the recipient knows what it's about without opening it.
In Edge, for PDFs and web pages
Copilot Chat in Edge summarizes the open page and some document types displayed in the browser, PDFs included. That's useful for a public report or a regulation published online that you don't want to download.
Prompts for summarizing contracts, reports and minutes
"Summarize this document" works, but you get a generic summary back. You'll get much more by telling Copilot who the summary is for and what decision that person has to make.
For automatic contract summaries:
- "Summarize this contract in a table with: parties, purpose, term, renewal, price and adjustments, penalties, termination grounds and confidentiality obligations. Give the clause number for each item."
- "List the obligations this contract places on our company and any related dates or deadlines. If something isn't in the text, say so instead of assuming."
For long reports:
- "Summarize this report in five points for the CEO, who has two minutes. End with the risks the document mentions."
- "Pull every figure from the report along with the page or section where it appears."
For meeting minutes:
- "Summarize these minutes as decisions made, open tasks with an owner, and issues left unresolved."
Asking for the clause, page or section has a practical reason: you can check what matters in seconds, and it protects you from a made-up figure.
Limits worth knowing
Copilot summarizes well, but it makes mistakes, and in a contract a wrong penalty or notice period gets expensive. Some limits Microsoft itself acknowledges, and others we see in practice:
- Very long documents. Microsoft's guide on document length explains that content at the beginning and end gets more attention than the middle. For long documents, summarize section by section.
- Scanned PDFs. If the PDF is a photo of paper rather than selectable text, results get worse. Run it through text recognition (OCR) first or ask for the digital version.
- Tables and appendices. Figures inside complex tables or appendices at the end are the ones to double-check.
- Permissions. With the license, Copilot only sees what the user can already open. If your company has folders shared with "everyone," Copilot will find those too. Cleaning up permissions before rolling out the license saves you surprises.
Our rule is simple. Use the summary to decide what to read carefully, and don't let it replace that reading when signatures or money are involved.
How to get started at your company
You don't need a big project. Pick a document type that keeps coming back, like supplier contracts, monthly reports or committee minutes, and write two or three standard prompts with the team. Try them for a couple of weeks with Copilot Chat, which already comes with eligible subscriptions. If usage grows and people start asking Copilot to "find that contract" instead of uploading it, that's when it makes sense to look at the license for those users.
Frequently asked questions
Do I need to pay for a Copilot license to summarize a PDF?
No. With Copilot Chat, included in eligible Microsoft 365 subscriptions, you can upload a PDF of up to 50 MB and ask for a summary. The license adds priority access, automatic summaries in Word and search across your work files without uploading them.
Are my documents exposed when I use Copilot with my work account?
With a Microsoft Entra account, Copilot runs under Microsoft's enterprise data protection. Files you upload stay in your OneDrive and aren't used to train the model. It's still a good idea to define what information can be used with AI and to review SharePoint permissions.
Can I trust an automatic contract summary?
As a first read, yes. For a decision, not without checking. Always ask for the clause or page behind each item and compare dates, amounts and penalties against the original text.
Want your team using it well from day one?
At Disrupsoft we assess which Copilot scenarios will have the most impact at your company, activate and configure it within Microsoft 365, train your teams with real cases like this one and keep supporting them afterward. Take a look at our Copilot and Microsoft 365 service and let's talk.
