A picture background sits behind the content of a Google Slides slide. It can create an opening image or a visual section break without becoming another ordinary object to select while editing text. Use a separate image object when the picture needs to be moved or annotated independently.
Choose a suitable picture
Prepare an image that matches the canvas proportions reasonably well and that you have permission to use. Google’s background guidance accepts GIF, JPG, and PNG images under 50 MB. A supported file is not automatically suitable: a busy image can make even large titles difficult to read.
Set the background image
On a computer, select the slide and choose Slide > Change background. Use the image option, select the desired file through the available source controls, and finish the background change. Check which slide is selected before applying the image.
Do not expect a background picture to behave like an inserted foreground object. If you need crop handles, object ordering, or a separately positioned picture, consider using an image object instead.
Verify crop and contrast
Review the entire canvas in slideshow view. Check whether important parts of the image are cut off or obscured by text. Inspect the title, slide number, and any attribution for contrast. If the image does not support legible content, choose a quieter picture or another layout. Review an exported copy separately; a good-looking editor preview does not establish that every output format displays the background and overlaid text exactly as intended.
References
Reviewed against the linked official product guidance on November 3, 2026. Features, limits, screen labels, and access can vary by account, platform, region, and organization policy.