You can use backgrounds on slides to spruce up your Google Slides project and help captivate those who see your presentation. Here's how to change the color or add a custom image to the background of your presentation.

Fire up your browser, head to Google Slides, open a presentation, or upload an existing PowerPoint presentation.

Related: How to Import a PowerPoint Presentation into Google Slides

Select a slide and then click Slide > Change Background.

Click Slides > Change background.

Next, choose a color or image to set as the background of your slide.

Choose a color or upload a custom image.

If you want to use an image instead of a solid color, you can insert one in a couple of different ways. You can upload directly from your local storage; take a picture with your webcam; link to a picture by URL; choose one from your Photos albums or your Google Drive; or search using Google, Life, or Stock images on the web.

You can select an image from a myriad of mediums, including your Google Drive or search for one using Google, Life, or Stock images.

Images must be in .gif, .jpg, or .png format and under 50 MB in size.

Related: What's the Difference Between JPG, PNG, and GIF?

After you find a suitable image, click the"Select" button.

After you find an image, click "Select."

Click "Done" to apply the background to the current slide.

Click "Done" to apply the background color/image to the slide.

If you click "Add to Theme," the background you select will apply to every slide in your presentation.

There you go. The background to one---or all---of your slides has been changed to a color or custom image of your choice.

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Voila! The background now has the custom color/image you selected.