> ## Documentation Index
> Fetch the complete documentation index at: https://docs.runable.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Edit Slides (Image Format)

> Edit image-format slides using text detection and region-based mark & edit.

Image-format slides are AI-generated images. You cannot click and drag elements like HTML slides. Instead, you have two editing tools: **Text Edit** (detect and change text) and **Mark & Edit** (draw regions and give the AI instructions for each one).

## Text Edit

Text Edit detects all text in a slide image and lets you change it. The AI regenerates the slide with your new text while keeping everything else the same.

<Steps>
  <Step title="Open a slide">
    Click on the slide you want to edit in the slide viewer.
  </Step>

  <Step title="Click Text Edit">
    The system scans the slide and detects all text regions with bounding boxes. Each detected text appears as an editable field.
  </Step>

  <Step title="Change the text">
    Modify the text in any region. You can change one region or multiple regions at once.
  </Step>

  <Step title="Click Apply">
    The AI regenerates the slide with your text changes while preserving the original design, colors, and layout.
  </Step>
</Steps>

### What Text Edit cannot do

* You cannot change the font or font size. The AI matches the original style.
* You cannot add new text where none exists. You can only modify detected text.

## Mark & Edit

Mark & Edit lets you draw rectangles on specific areas of a slide and give the AI instructions for each marked region. The AI applies all changes at once.

<Steps>
  <Step title="Open a slide">
    Click on the slide you want to edit.
  </Step>

  <Step title="Click Mark Edit">
    The slide enters marking mode.
  </Step>

  <Step title="Draw rectangles on the areas you want to change">
    Click and drag to draw rectangles on the regions you want edited. They auto-number (1, 2, 3...).
  </Step>

  <Step title="Write instructions for each region">
    For each numbered mark, type what you want changed. For example: "Change the chart to a bar chart" or "Replace this image with a photo of a modern office."
  </Step>

  <Step title="Optionally attach reference images">
    You can attach a reference image to any region for style guidance.
  </Step>

  <Step title="Click Apply">
    The AI edits all marked regions at once while keeping the rest of the slide untouched.
  </Step>
</Steps>

### What Mark & Edit cannot do

* You cannot mark regions smaller than a few pixels. The AI needs enough area to understand context.
* You cannot undo individual marks after applying. You would need to regenerate.

## Ask the agent instead

You can also ask the agent in the chat to make changes to specific slides.

<Prompt description="Ask the agent to change a slide's visual style">
  On slide 6, change the background from white to dark navy (#1B2A4A) and make all text white. Keep the chart colors the same.
</Prompt>

<Prompt description="Ask the agent to replace content on a slide">
  Replace the placeholder image on slide 2 with a photo of a modern coworking space. Keep the text and layout the same.
</Prompt>

## What you cannot do with image-format slides

* You cannot drag or reposition elements. Image slides are flat images.
* You cannot resize individual elements.
* You cannot use formatting tools (bold, italic, etc.).
* You cannot add new content where none exists.

<Tip>
  If you need precise control over individual elements (text positioning, font changes, element resizing), use HTML format when generating the presentation. HTML slides give you direct editing access to every element.
</Tip>

## Next steps

<CardGroup cols={2}>
  <Card title="Edit slides (HTML format)" icon="pen-to-square" href="/edit-slides-html-format">
    For decks where you need direct editing control over every element.
  </Card>

  <Card title="Export to PDF or PPTX" icon="download" href="/export-to-pdf-or-pptx">
    Download your finished presentation.
  </Card>
</CardGroup>