A pale vase can lose its edges on a white page. On a dark page the same photograph may stand out while its shadows feel heavier. Open one file in both layouts before editing the picture. Its pixels, the frame around it, and the nearby text are separate parts of the result.

Find where the edge disappears

A pale photograph may blend into a light page, while dark edges can disappear against a dark page. Try a thin, subtle border around the image. If the border draws attention away from the subject, soften it or give the image more room.

Use spacing and shadows carefully

Check whether a list card has enough space around all four sides. A heading placed too close to the photo can make the two feel crowded. A darker shadow may barely register in a dark theme. A small change in the border or background tone can be more effective.

Check text placement separately

If a heading sits over the image, read it over the lightest and darkest areas behind it. A narrower crop may put a different part of the photo under the heading. Move the heading outside the picture if necessary. Check contrast on each photograph rather than assuming one setting will suit them all.

Open two previews of the same file

Switch between light and dark on a phone and desktop. If the subject’s edge, surrounding space, and heading are clear in both, the image may work without another edit. When a separate edit is needed, make it from the source and record which placement it serves.

Build a four-view background test

Imagine photographing a ceramic vase on a pale background. The photo boundary might disappear on a light page, while the bright rectangle draws more attention than the vase on a dark page. Open the same picture against each background, then repeat the comparison at the size of a small card. You now have four views to judge. Do you notice the vase's shape first, or the edge of the photograph? If the product blends into the background, try a thin boundary or more space around the image. Darkening the whole photograph could change the perceived colour of the vase. Keep a boundary subtle when its only job is to identify the picture's edge. If the image includes transparency, look for a light fringe that only shows against one background. Hold the photo's tone steady while changing one presentation setting at a time. That makes the cause of a visible improvement easy to identify.

Read the picture and the surrounding copy separately

A portfolio might place a heading and a short caption next to the picture. Its brightest part can look striking in dark mode while the small caption is still hard to read. Where text overlaps a photo, check the lettering against the lightest and darkest areas it crosses. Moving the heading outside the frame may work across themes without separate artwork. When you add a border or shadow, compare it with neighbouring cards. Different treatments on a long sequence can make the page hard to scan. Try the final design at low screen brightness as well, since shadow detail can merge with a dark background. Keep one reference screenshot of each theme once both are readable. You can reuse the spacing and boundary for later images and change it when a particular photograph needs different treatment. Inspect the exported file again if changing the layout fails to remove a fringe. The edge might be part of the image rather than the theme.