Skip to main content
The Slide Preview is the final editing step. Generate images, refine details, browse version history, then export.

​
Batch Generate All Images

Click Batch Generate Images — AI generates all pages in parallel. Each card shows a progress animation; previews appear as they complete.
If the current resolution is 1K, a warning dialog recommends switching to 2K or 4K — the difference in text clarity is significant. Change this in Project Settings → Global Settings.

​
Quality Control Mode

Enable Quality Control from Settings → Image Generation Configuration or from the switch below the generation button on the Slide Preview page. When enabled, each generated image is not saved as a version immediately. A vision model first checks whether:
  • the slide contains garbled, unreadable, or clearly incorrect text
  • the illustration, layout, or rendering quality is too low
  • the visual content, style, or layout substantially deviates from the page description and prompt
If the review rejects the image, Banana Slides automatically regenerates it, up to 3 attempts. Only images that pass the review are saved to the database and added to version history. If all attempts fail, the page is marked as failed and prompts you to adjust the page description or prompt.

​
Single-Page Refinement

When one slide doesn’t look right, no need to regenerate everything:
  1. Click the Edit icon (pencil) on the slide card
  2. Update the page description or add an edit instruction in the right panel
  3. Click Generate Image — only this page regenerates
Edit instruction examples:
  • Change the background to a dark gradient
  • Move the title to the top and increase font size
  • Replace the right side with a bar chart, keep the data
  • Change the overall style to hand-drawn illustration
To save description changes without regenerating the image, click Save Outline/Description Only.

​
Region Editing: Change Only Part of a Slide

Want to adjust a specific area without touching the rest:
  1. Enter single-page edit mode, then click Region Select above the image
  2. Click and drag to select the area you want to modify
  3. The selected region is cropped and added as a reference image
  4. Describe the change in the edit instruction box, then click Generate Image
AI redraws the full slide with extra focus on the selected region.

​
Version History

Every regeneration automatically saves the previous version — nothing is lost.
  1. Enter single-page edit mode
  2. Click History Versions in the bottom-left of the image
  3. Select any historical version to restore it
Experiment freely with different prompts — you can always roll back to a version you liked.

​
Batch Regenerate Selected Pages

To regenerate only a subset of pages:
  1. Click Multi-select at the top
  2. Check the pages you want to regenerate
  3. Click Generate Selected (N)

​
Project Settings

Click the gear icon Project Settings in the top-right — three tabs:

​
Project Settings Tab

​
Export Settings Tab

Configure Editable PPTX extraction behavior:
  • Text Extractor: OCR / Vision model / Hybrid — each has quality vs. speed tradeoffs
  • Image Inpainting: Pixel-based / AI-based / Hybrid
  • Error Handling: Enable Allow Partial Results to get output even when errors occur

​
Global Settings Tab

Change API provider, model names, image resolution (1K / 2K / 4K), max concurrent workers. Run Service Test here to verify your configuration is working.