Presentation background images

1. Background images and readability

A photo may contain both light and dark areas on the same slide, so a single text color may not be equally legible everywhere. Text can be difficult to read when it overlaps details in the photo. First, consider the text placement, the image’s main subject, and the empty space you want to leave on the slide together. If the text covers an important part of the image, try changing the crop or moving the text to a less busy area.

These are design suggestions, not fixed rules that apply to every photo and presentation. Check the result on the actual slide. For more ideas on preparing images, see the guide to Preparing images for a PowerPoint presentation.

2. Check the canvas ratio and crop

Compare the photo’s ratio with the slide’s ratio. Don’t assume the image will automatically fit the crop correctly without checking how it appears on the slide. If faces, products, or objects needed for the presentation are cut off, try repositioning the image or choosing another photo. Also check whether the photo has a calm enough area for the text.

TIM’s Wide Slides (16:9) and Standard Slides (4:3) pages offer examples for different slide ratios. These are example collections, not product instructions for cropping a photo in the application you use.

3. Define the text area with a panel

Using a panel behind the text is one way to separate the text area without changing the entire photo. The general design process is: place the photo, identify where the text will go, add a rectangle over that area, and choose a panel color that stands out from the text. Keeping the panel only where it is needed can leave the rest of the photo visible.

Since no application is specified, don’t assume every program has the same menu names, layer order, or transparency settings. Check the equivalent options for adding shapes, moving them forward or backward, and adjusting their fill in your application. If a transparency option is available, try a setting that separates the text while keeping the photo meaningfully visible. 55% transparency is a hypothetical starting value for the example below, not a universal threshold.

Google Slides’ desktop editor’s official help explains how to add a background image using Slide > Change background > Image > Choose. It describes selecting Done to apply the image to one slide and Add to theme to apply it to the entire presentation. These steps are for adding a background; they do not describe a shape transparency menu. If you can’t find the options, check the menus in your editor and the current steps in Google Slides Help. Google also has instructions for adjusting the opacity of selected images; this isn’t enough to assume the same control is available for every image set as a background. For a different workflow, you can also see How to add a background image to Google Slides.

4. Consider knockout windows and frames

Some ready-made images include a transparent window or screen frame through which a photo can show. TIM’s Images collection features a tablet image with a transparent screen area. The Standard Slides examples describe a wall-screen knockout example that can be placed as a layer over a photo. These sources describe the example images; they do not show the steps for creating the same effect in specific software or the licensing terms for every file.

If you use an image like this, check how the photo looks inside the window and whether the frame leaves enough room for text. Before using the file, verify the applicable terms of use and whether it can be edited in your application. Instead of squeezing text into the same area as the image inside the window, you could try a less busy area outside the frame.

5. Test font and color choices on the slide

Thin lettering may be harder to make out over a complex photo. Compare different font weights, colors, and sizes for headings and short descriptions on your own photo. Sans-serif or bold text is not always the best choice. Check the length of the body text in presentation view as well.

Light text on a dark panel or dark text on a light panel can be a starting point; the photo’s tones and the panel settings affect the result. A shadow or glow is not a required solution. First, adjust the text area; if you add an effect, check that it does not blur the letters or make the slide unnecessarily busy.

6. Example: Corporate progress slide

The values in this example are application-independent design experiments; they are not required measurements or a guarantee of readability.

1. Choose a horizontal photo showing an office team for a widescreen slide. Check that faces and details needed for the presentation remain in the crop.
2. Plan to place the text on the left. If that area contains many faces or important objects, try repositioning the photo or changing which side the text goes on.
3. Add a rectangular panel behind the text area. The example fill color is #0A192F, and the example transparency is 55%. Treat these as starting points; find the setting in your tool and assess the result visually.
4. Add a white, left-aligned heading and short explanatory bullet points over the panel. The example heading is 36 pt, and the description is 16 pt. Test whether the text is easy to read at the actual slide size.
5. Check that the panel does not cover the people on the right side of the photo and that the text is not crowded against the panel’s edges. If the balance is off, adjust the panel, crop, or amount of text.

7. Final check and frequently asked questions

Before presenting, check each slide in presentation view:

• Are the heading and description legible at presentation size?
• Has an important part of the photo been cropped or covered by the panel?
• Is the text easy to distinguish from the area behind it?
• Is the text crowded against the panel’s edges?
• If the appearance differs from what you expected, do you need to adjust the crop, panel, text color, or amount of text?

This check does not guarantee a specific contrast value or the same result in every setting. Make adjustments on any slide where you notice a problem, then check it again.

Is making the photo transparent enough on its own? Not always. The result depends on the photo’s tones and the other elements on the slide. Rather than trying to fade the photo, consider adding a separate panel behind the text area as well. You can consult Google Slides’ official help instructions for adjusting the opacity of a selected image; don’t assume the same option will be visible for your background image.

Will an opaque card behind the text ruin the image? That’s a design choice. A card can separate the text from the photo, but it covers part of the image. Check whether it obscures an important detail and whether the slide is balanced overall.