---
title: How to modify a background image on a carousel slide
description: Take control over background image appearance, alignment, opacity, and more to craft stunning and optimized social media carousels.
canonical: https://postnitro.ai/docs/how-to/set-background-image/modify
---

# How To Modify A Background Image On A Carousel Slide?

> When a background image is already added, by clicking on the "Background Image" again you will see the following option to modify the background image.

![Update A Background Image](https://postnitro.ai/docs/images/canvas/update-background-image.webp)

## Functionality

### Replace Image

Click on the "Choose Image" button to replace the existing image with another.

### Apply To All Slides

Enabling this toggle will do the following for all slides:
- The image will be applied as a background
- The same opacity settings will be applied
- The same alignment settings will be applied

![Apply Image To All](https://postnitro.ai/docs/images/canvas/apply-to-all.webp)

### Set Image Opacity

Set the image's opacity % to set the contrast ratio between your content and the background image.

![Set Image Opacity](https://postnitro.ai/docs/images/canvas/set-opacity.webp)

### Image Fit

To make sure that the image fits perfectly on the carousel you can:
- Minimize the image to make it fit the slide width.
- Maximize the image to make it fit the slide height.

![Image Fit](https://postnitro.ai/docs/images/canvas/image-fit.webp)

### Image Alignment

In case the image is overflowing over the slide width, you can:
- position the image to the **left**
- position the image to **center**
- position the image to the **right**

![Image Aligment](https://postnitro.ai/docs/images/canvas/image-alignment.webp)

### Delete Image

You can delete the background image by clicking on the delete button.

![Set Image Opacity](https://postnitro.ai/docs/images/canvas/image-delete.webp)