Modern presentations typically use 16:9 widescreen format (1920x1080 pixels) or 4:3 standard format (1024x768 pixels). Inserting images at these exact dimensions ensures they fill the slide without scaling artifacts.
For full-slide background images, use 1920x1080 for 16:9 presentations and 1024x768 for 4:3. For inline images within slides, resize to 50-75% of the slide width depending on your layout.
With ImgTools, resize your presentation images to the slide dimensions. For a full-bleed background, use 1920x1080. For a half-width image, 960x540 works well in a 16:9 layout.
Save as JPEG at 85% quality to keep presentation file sizes manageable. PNG works for images with text overlays or transparency.
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