NotebookLM's pencil tool has been redesigned. Instead of clicking elements you hope to change, you now describe the changes you want — in plain language — directly on each slide. Queue up revision requests across the whole deck, then hit Generate Revised Deck to apply everything at once.
The original pencil icon in NotebookLM's Slide Deck studio opened an element-level editor — you had to click on a text box, a title, or a visual area, then type a replacement. It worked, but it was slow: one click, one change, one regeneration at a time.
The new pencil is a prompt-based revision queue. You navigate to any slide, open the pencil panel, and type what you want changed — in natural language. Your request is logged against that slide number. Navigate to the next slide, add another request. Continue until you've annotated as many slides as needed. Then click Generate Revised Deck, and NotebookLM processes all requests in a single pass.
The result is a fundamentally different editing experience: more like directing a creative assistant through a brief than manually editing a document. The quality of your instructions now drives the quality of the output.
The pencil icon is still present on each slide, but its behavior has changed: clicking it now opens a text field for your instruction, not an element editor. The slide thumbnail panel shows a badge for every slide with pending requests, so you can see the full scope of your revision at a glance before committing.
Open your NotebookLM notebook with sources uploaded. Click Studio in the right panel, then select Slide Deck. NotebookLM generates a first draft grounded entirely in your source material. This draft is your starting point — don't edit it yet.
Click the pencil icon on any slide. A text input panel opens below or beside the slide preview. Type your revision instruction in plain language — be specific about what you want changed and why. The instruction is logged against that slide number when you confirm it.
Click through the slide thumbnail panel to move between slides. Each slide can hold multiple revision requests — add a second prompt to the same slide by confirming the first and typing a new one. Requests stack and will all be applied when you generate. The thumbnail badge shows a count of pending requests per slide.
The revision queue panel shows all pending requests across all slides in one view. Check for conflicts — if slide 2 asks for "a 3-column layout" and slide 3 asks to "match the format of slide 2," the model will carry the layout change forward. Intended or not, know what you're asking for before you commit.
When you're ready, click Generate Revised Deck. NotebookLM processes all queued requests in a single pass. Changed slides are marked in the thumbnail panel so you can go directly to each one for review. Unchanged slides are left exactly as they were.
| Behavior | Old pencil | New pencil |
|---|---|---|
| How you trigger a change | Click a specific element (text box, image) | Write a prompt describing what you want changed |
| Scope per action | One element at a time | One or many requests per slide; entire deck in one generation |
| Multi-slide editing | Must edit and regenerate each slide separately | Queue requests across all slides, generate once |
| Regeneration cost | One generation per element change | One generation for the entire queued revision batch |
| Undo / iteration | Overwrite the element, no queue | Add new requests over the revised output to iterate |
| Instructions visible before committing | No — changes applied immediately | Yes — full queue review before generation |
Note on grounding: Revision prompts are applied in the context of your notebook's sources. If you ask for content the sources don't support, NotebookLM will either flag the gap or generate a grounded approximation. Prompts that ask for factual additions not present in the source material may be partially fulfilled or declined.
Copy any prompt below. Use these directly in the pencil panel on the relevant slide.
Every prompt in this guide plus all prompts across the full category — slide structure rewrites, tone calibration, data-slide redesigns, executive summary generation, and audience-specific formatting templates.
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Revision requests that ask for layout changes — column counts, visual arrangements — are interpreted by the model and may not render with pixel-perfect fidelity. If a specific visual structure is critical, describe it precisely: "two equal-width columns, left column header: Problem, right column header: Solution" performs better than "a two-column layout."
The pencil's revision system works best when instructions are scoped to a single concern per prompt. Stacking multiple unrelated changes in one prompt (tone + layout + length) produces less predictable results than three separate, focused prompts. The queue accommodates multiple prompts per slide — use that to your advantage.
Slides regenerated through the pencil remain grounded in your notebook sources. You cannot use revision prompts to introduce new claims, statistics, or framing not present in the source material. For significant content additions, update your notebook sources first, then use the pencil to reshape how that content is presented.