Microsoft is preparing to roll out a new Copilot feature that could make long PDFs easier to navigate in OneDrive and SharePoint. Starting in December 2026, eligible Microsoft 365 Copilot users will be able to ask Copilot to generate a hierarchical, clickable table of contents for PDFs that do not already have one.
The new Smart Table of Contents (Smart TOC) feature will be available through the OneDrive and SharePoint PDF viewer on the web. It will analyze the structure of a document and create navigational entries linked to individual pages or page ranges.
The feature is designed to address a familiar problem: opening a lengthy PDF only to discover that it has no useful table of contents.
For organizations that regularly work with reports, manuals, contracts, research documents and other long-form PDFs, the addition could provide a faster way to jump between sections without manually searching through dozens or hundreds of pages.
When Microsoft’s Smart TOC Will Roll Out
Microsoft plans to introduce the feature through a phased rollout rather than making it available to everyone at once.
The current schedule calls for:
- Targeted Release worldwide: Early December 2026 through mid-December
- General Availability worldwide: Mid-December through late December
- GCC: Mid-December through late December
- GCC High: Mid-December through late December
- DoD: Mid-December through late December
Because the rollout is gradual, Microsoft 365 Copilot users may see the feature at different times during December.
The initial release is also limited to the web versions of OneDrive and SharePoint. Microsoft is not including its mobile or desktop applications in this rollout.
How Smart TOC Works
The experience is deliberately user-initiated.
When an eligible user opens a PDF that does not already contain table-of-contents information, a Smart TOC entry point can appear in the web-based PDF viewer. The user can then ask Copilot to generate the navigation structure.
Copilot analyzes the document’s organization and produces a nested hierarchy of sections and subsections.
The resulting entries are clickable, allowing users to move directly to relevant pages or page ranges.
That distinction matters. Smart TOC isn’t described as a background process that automatically analyzes every PDF stored in an organization’s environment. The user has to request the feature.
The basic workflow
- Open a PDF in OneDrive or SharePoint on the web.
- If the PDF does not already contain a table of contents, access the Smart TOC option.
- Ask Copilot to generate the table of contents.
- Review the AI-generated hierarchy.
- Use the clickable entries to navigate through the document.
- If permitted, save the generated table of contents to the PDF.
The saved table of contents can then be displayed by compatible PDF editors.
Who Can Use the Feature?
Smart TOC is not being introduced as a general OneDrive or SharePoint capability for every user.
Access requires a Microsoft 365 Copilot license.
There is also an important distinction between viewing and editing permissions.
Users with view-only access can generate and use a Smart TOC for navigation, but they cannot save the generated table of contents to the PDF.
Users who have edit permissions can save the generated table of contents into the document.
That means organizations may need to explain the difference to employees who encounter different options depending on their permissions.
AI Accuracy Remains an Important Consideration
The convenience of an AI-generated table of contents comes with a familiar caveat: the output may not always be correct.
Microsoft specifically warns that Smart TOC can contain inaccuracies, with scanned and OCR-based PDFs being an area of particular concern.
This is significant because PDFs can vary dramatically in how their content is structured. A digitally created document with clearly defined headings may be relatively straightforward for an AI system to interpret, while a scanned document may depend heavily on optical character recognition.
Users should therefore treat the generated hierarchy as a navigation aid rather than assuming that every heading, section relationship or page reference is perfect.
For documents where navigation accuracy matters, Microsoft recommends that users validate the generated entries.
What Happens to the PDF’s Existing Permissions?
Smart TOC does not appear to provide a new route around existing file permissions.
Copilot processes PDF content that the licensed user is already authorized to access, while existing permissions continue to apply.
The distinction between generating and saving is particularly relevant:
- Viewing permissions: Users can generate and use Smart TOC.
- Edit permissions: Users can generate, use and save Smart TOC.
- Existing access controls: Continue to govern access to the underlying PDF.
In other words, the feature adds an AI-powered interaction with content a user can already access rather than creating a separate permission model for PDF navigation.
Why This Matters for Microsoft 365 Administrators
For most organizations, the rollout does not require immediate administrative action.
Microsoft says administrators do not need to make a configuration change simply to prepare for Smart TOC.
There are still practical steps IT and support teams may want to take before the December rollout.
Organizations may want to:
- Review Microsoft 365 Copilot license assignments.
- Tell eligible users about the new PDF navigation capability.
- Update internal documentation and helpdesk guidance.
- Explain that saving Smart TOC requires edit permissions.
- Remind employees to check AI-generated entries when accuracy is important.
This is especially relevant for companies where employees regularly handle lengthy PDFs but rely on centralized document-management systems.
A Small Feature With a Practical Use Case for Copilot
Smart TOC is not an attempt to turn Copilot into a document editor or autonomous document-management system. Its use case is much narrower: making navigation easier when a PDF lacks a usable table of contents.
That narrow scope may actually make the feature useful in everyday workflows.
Consider a 200-page technical report without an index. A user might normally scroll through pages, search for keywords or manually identify section headings. Smart TOC offers another option: ask Copilot to construct a navigational hierarchy and then jump between the resulting entries.
The feature could be particularly useful for documents that were never designed with modern PDF navigation in mind.
It also illustrates a broader direction for Microsoft 365: putting generative AI directly into existing document workflows rather than requiring users to move content into a separate AI experience.
The Compliance and Data-Processing Angle
Microsoft’s rollout information identifies Smart TOC as an AI/ML capability that interacts with customer data.
Copilot needs to analyze the PDF’s contents to determine its structure and create the table of contents. That means the feature represents a new generative-AI interaction with content that users already have permission to access.
The process is also explicitly user-initiated.
That is an important distinction for organizations evaluating how AI features interact with business documents. Smart TOC does not automatically generate tables of contents across a document library; an eligible user chooses to invoke the capability for a PDF.
The resulting experience will also identify the table of contents as AI-generated and warn that it may contain inaccuracies.
What Users Should Expect in December
The biggest limitation at launch is platform availability.
If an organization expects employees to find Smart TOC inside the OneDrive or SharePoint desktop or mobile applications, they may be surprised. The initial release is specifically focused on the web PDF viewer.
The licensing requirement is another key factor. Simply having access to OneDrive or SharePoint does not mean every employee will receive Smart TOC.
The feature is aimed at users with Microsoft 365 Copilot licenses.
For administrators, the practical message is relatively straightforward: there is no urgent configuration task, but communication and documentation can help prevent confusion once the rollout reaches users.
What Comes Next for AI-Powered Documents
Microsoft’s Smart TOC rollout points to a practical category of AI features: small interventions that reduce friction in existing workflows.
Instead of asking users to summarize an entire PDF or rewrite its contents, Copilot is being used here to solve a specific navigation problem.
The December 2026 rollout will show how useful that approach is across different types of documents. Accuracy will likely be the key variable, particularly for scanned PDFs and documents with unusual layouts.
For now, organizations preparing for the rollout should focus on three things: Copilot licensing, user permissions and human review of AI-generated navigation.
The feature may be simple, but for anyone who spends time searching through long, poorly structured PDFs, that simplicity could be precisely the point.
