How to Create Editable Nano Banana Presentations: Complete Step-by-Step Tutorial

How to Create Editable Nano Banana Presentations (That You Can Actually Customize in PowerPoint)

Most Nano Banana Pro presentation tools have a serious limitation: the generated slides aren't truly editable. The AI creates beautiful 4K visuals, but they're exported as locked PNG images. Want to update a label? Change a color? Adjust a diagram? You're regenerating from scratch.

This tutorial shows the current Presentia flow for Nano Banana Pro presentations: generate in TwoStepHero, refine in /generate Edit mode, then export your .pptx.

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Current Presentia Workflow (Updated February 24, 2026)

What "Editable" Actually Means

When we say "editable Nano Banana presentations" in the current product, we mean you can refine slide content and layout inside Presentia's Edit mode before export.

Not a PNG image containing a diagram. A vector shape that is the diagram. Not static text embedded in an image. A text box you can click and type. Not a colored block you can't access. A shape you can right-click and format.

Most Nano Banana tools give you the first option. Presentia gives you the second. This tutorial is about the second.

What You Need

• A Presentia AI account (presentia.ai — start with 7-day Pro free trial, credit card required, not charged until trial ends)
• Microsoft PowerPoint (or Google Slides / Keynote for alternative editing)
• Your presentation content direction

Part 1: Generating Your Editable Nano Banana Presentation

Step 1: Write a Detailed Generation Prompt

The quality of your editable presentation starts with how specifically you describe what you want. Use this structure:

[Topic] + [Slide count] + [Audience] + [Key visual elements needed] + [Any specific sections]

Example prompts:

For a business presentation:

"Sales strategy presentation for a B2B software company, 12 slides, for executive leadership audience. Include: competitive landscape matrix, Q4 vs Q3 revenue comparison chart, pipeline funnel diagram, 90-day roadmap timeline, and geographic market expansion map."

For academic use:

"Research presentation on CRISPR gene editing applications in cancer therapy, 15 slides, for a genetics conference. Include: gene editing mechanism diagram, clinical trial results bar chart, treatment efficacy comparison table, and research timeline."

For a startup pitch:

"Series A pitch deck for a climate tech startup, 10 slides. Include: market size diagram ($180B TAM), competitive positioning 2x2 matrix, product architecture diagram, unit economics waterfall chart, SAFE round structure table."

Step 2: Enable Nano Banana Pro in Presentia

1. Log into presentia.ai
2. Click "New Presentation"
3. Paste your detailed prompt
4. Look for "Image Quality" or "AI Visual Mode" settings
5. Select "Nano Banana Pro" or "4K Quality"
6. Choose your base theme color palette
7. Click "Generate"

Generation takes 30–60 seconds for a full deck.

Step 3: Review the Generated Deck

After generation, Presentia shows you a slide-by-slide preview. Check:

• Does each slide address its intended purpose?
• Are the Nano Banana Pro visuals topically relevant?
• Is the overall flow logical?
• Which slides will need the most editing?

Don't aim for perfection here. You're evaluating the structure, not the final product. The editing stage is coming.

If a specific slide missed the mark, use Presentia's "Regenerate Slide" feature to give that slide a more targeted prompt before exporting.

Part 2: Exporting Your Editable Nano Banana Presentation

Step 4: Export to .pptx

1. Click "Export" or "Download" in Presentia
2. Select "PowerPoint (.pptx)" format
3. Download the file to your computer

What you're downloading: a .pptx export from the /generate editor. When a slide has an AI preview image, export prioritizes that full-slide render for visual fidelity.

Step 5: Verify Editability (30-Second Test)

Before doing intensive editing work, do a quick verification:

1. Open the .pptx file in PowerPoint
2. Click on a text element — does a text cursor appear? ✅
3. Click on a shape in a diagram — does it show selection handles? ✅
4. Right-click a shape — do you see "Format Shape" options? ✅
5. Click on a chart element — do you see chart editing options? ✅

If all four pass, your in-app refinements carried over correctly. Proceed to customization.

Part 3: Editing Your Nano Banana Presentation in PowerPoint

Step 6: Apply Brand Colors

Method A — Global theme change:

1. Go to Design → Colors
2. Select "Customize Colors"
3. Update the theme palette to your brand hex codes
4. Click Save

This applies your brand color across all slides simultaneously.

Method B — Element-level color change (more precise):

1. Click the specific element you want to recolor
2. Right-click → "Format Shape"
3. Go to Fill → Solid Fill
4. Enter your exact hex code (e.g., #1A73E8)
5. Click OK

Use Method A for broad palette changes; Method B for specific element overrides.

Step 7: Edit Text in Nano Banana Diagrams

Text within AI-generated diagrams can be refined directly in Presentia before export:

To edit text in a shape:

1. Double-click the shape (or click once and press F2)
2. The cursor appears inside the shape text
3. Select and edit as normal text

To edit floating labels:
Some diagram labels appear as separate text boxes layered over shapes. If you can't access text by double-clicking the shape:

1. Click the shape to select it
2. Press Escape to deselect
3. Click the area where the text appears — this may reveal a separate text box on top
4. Double-click that text box to edit

Step 8: Update Data Labels in Charts

AI-generated chart content in Presentia can be refined before export:

1. Click once on any element within a chart
2. You'll see "Chart Tools" appear in the ribbon
3. Click "Edit Data" to open the data table
4. Update numbers directly in the table
5. The chart updates automatically

Note: If a chart is particularly complex, you may prefer to right-click → "Edit Chart in Excel" for full data editing control.

Step 9: Restructure Diagram Layouts

AI-generated diagrams use PowerPoint shapes — move them freely:

1. Click any shape in a diagram to select it
2. Drag to reposition
3. Use Alt+Arrow keys for precise nudging (1px at a time)
4. Use Align tools (Home → Arrange → Align) to redistribute spacing evenly

Grouping tip: If multiple shapes form a single logical unit (e.g., 3 boxes that make up one process step), select all three, right-click → "Group" so they move together.

Step 10: Apply Your Logo and Branding

For logo on every slide:

1. Go to View → Slide Master
2. Insert your logo on the Master slide
3. Position and size as needed
4. Close Slide Master view
5. The logo now appears on every slide

For one-slide logo placement:

1. Go to the slide directly
2. Insert → Pictures → from File
3. Position your logo image on the slide

Step 11: Final Polish Pass

Before your presentation is ready, do a final pass:

☐ All text is your correct content (not placeholder AI copy) ☐ Brand colors applied consistently across all slides ☐ Logo appears correctly in your designated position ☐ Data labels and chart numbers match your actual data ☐ Slide titles are finalized and consistent in format ☐ Fonts match your brand typography ☐ Slide numbers / footers are correct ☐ Any "regenerated" slides blend visually with the rest of the deck

Common Editing Errors and Fixes

Problem: Can't click inside a complex diagram element Fix: Some elements are grouped. Click the group once to select it, then click again to enter the group and select individual shapes.

Problem: Changing one element's color changed multiple elements Fix: The elements share a theme color. Use "Format Shape" with the hex option instead of the theme color picker to override specifically.

Problem: Text box is in front of a diagram element blocking it Fix: Right-click the blocking element → Send to Back (or Arrange → Send Backward until it's in the right layer order).

Problem: A chart won't update when editing data Fix: Try Edit Chart in Excel. Sometimes complex chart data requires the Excel data editor to update correctly.

Getting the Best Results: Tips from Power Users

Tip 1: Describe your edits before you make them Before spending time editing, highlight which 5 changes will have the highest visual impact. Focus there first. Many minor changes are invisible to audiences.

Tip 2: Edit on the Slide Master first Applying brand typography and colors on the Slide Master saves 80% of your element-level editing time.

Tip 3: Work slide-by-slide, not element-by-element Complete all edits on slide 1 before moving to slide 2. Jumping between slides loses context and creates inconsistencies.

Tip 4: Save incrementally Ctrl+S every 5 minutes. PowerPoint autorecover works, but don't rely on it.

Tip 5: Export a PDF before finalizing Export to PDF and review at 100% zoom to catch any rendering issues that don't show in normal PowerPoint view.

From Tutorial to Practice: Start with Your Free Trial

The best way to learn is by doing. Start a 7-day Pro free trial at presentia.ai (credit card required, not charged until trial ends). Generate one data-heavy slide and one diagram slide. Export to PowerPoint and complete Steps 6–11 above for both slides.

By the time you've edited those two slides, you'll understand the full workflow from generation to export and how to finalize quality before download.

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