NotebookLM adds slide edit, PPTX

Google’s NotebookLM has expanded its slide-deck workflow with two changes users had been asking for: the ability to revise individual slides with text prompts and the ability to move decks into PowerPoint-compatible files. The update addresses a gap in NotebookLM’s presentation feature, which previously centered on generating decks inside the app and downloading them as PDFs. Google’s current help documentation says users can now open a generated deck, choose the revise tool, and enter instructions on specific slides. The same documentation says slide additions and deletions are still unavailable. Google has not framed the change as a broad redesign of NotebookLM. The product’s official help pages still describe Slide Decks as AI-generated presentations built from notebook sources and warn that the output can contain visual or factual inaccuracies. The company also says the feature remains limited in some ways on mobile and is currently available only to users over 18. ### What exactly changed inside NotebookLM’s slide tool? (support.google.com) Google’s NotebookLM Help page says users can now revise an existing deck slide by slide rather than regenerate a full presentation from scratch. In the Studio panel, a user opens a Slide Deck, selects the pencil icon marked “revise,” and enters instructions on individual slides. Google says multiple slide changes can be grouped under “Pending Changes” before generating a revised deck. (support.google.com) Google’s documentation also says the revision flow is faster than creating a new deck from scratch. The company advises users to batch changes because each revision generates an entirely new slide deck, and quota limits apply to the total number of revised decks. ### What can users change, and what still cannot be done? Google’s help page says users can try editing text, changing layouts, or updating visuals on existing slides. (support.google.com) The same page says adding or removing slides “is not yet supported,” which leaves the tool short of full manual slide editing. Google also says sources are not taken into account during revisions, a limitation that matters for users expecting the same grounding behavior they get elsewhere in NotebookLM. NotebookLM’s broader help center continues to position the product as a source-grounded research assistant that can work with PDFs, websites, YouTube videos, Google Docs and Google Slides, among other inputs. PowerPoint files in PPTX format are also listed as supported source uploads. ### How does this fit with Google’s earlier slide-deck push? Google Labs said in a December 16, 2025 blog post that NotebookLM users could create slide decks with the company’s Nano Banana Pro image model and use the tool to convert research, brainstorms and other material into visual presentations. (support.google.com) That post described refining existing slides by adding styling and visuals from project sources, signaling that Google was already pushing the product beyond one-shot deck generation. (support.google.com) Google’s earlier Slide Deck help page, however, emphasized presenting inside NotebookLM or sharing as PDF. The newly surfaced revision instructions are more explicit about per-slide changes and workflow management than that initial framing. ### Why does the PPTX piece matter to teachers and teams? PowerPoint export matters because NotebookLM’s original slide workflow ended inside NotebookLM or in a PDF file. (blog.google) A PPTX handoff gives users a file format that fits common school and workplace presentation workflows, especially where Microsoft Office remains standard. Google’s official help page retrieved in this search still highlights PDF download in the deck menu, but third-party references indexed by search results point to native PPTX export arriving in February 2026. (support.google.com) Because Google’s currently opened official documentation in this search does not spell out the PPTX download step, that part of the rollout is better treated as supported by contemporaneous reporting and user discussion than by the help text alone. A teacher-focused X post cited in the source briefing described the combination of slide editing and PPTX export as a “huge win” for student projects, professional-development materials and teacher workflows. That reaction tracks with the product gap the update addresses: users no longer have to accept a locked first draft or rebuild the deck elsewhere for every small change. ### Where can users verify the current workflow themselves? (support.google.com) Google’s NotebookLM Help Center now directs users to the “Generate a Slide Deck in NotebookLM” page for the current process, including how to generate, revise and manage decks. Google Labs’ slide-deck blog posts remain the clearest record of how the company has been expanding the feature set over time. As of May 23, 2026, those pages are the most direct public sources for checking what NotebookLM says Slide Decks can do now and what limits still remain. (support.google.com 1) (support.google.com 2)