Unfortunately, you cannot directly make a transparent background white in Photopea. Transparency, by definition, means the absence of color. What you're likely trying to achieve is to replace the transparent background with a white one. Here's how you can do that:
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Ensure you actually have a transparent background: If your image already has a white background, you'll first need to remove it to create transparency. You can use tools like the Magic Wand or Lasso tool to select the white background, and then delete it (or use
Select > Color Rangeand select the white color, then delete). -
Add a new white layer:
- Create a new layer by going to
Layer > New > Layer. - Fill this new layer with white. You can do this by using the Paint Bucket tool with white selected as your foreground color, or by going to
Edit > Filland choosing white.
- Create a new layer by going to
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Move the white layer to the back: In the Layers panel, drag the white layer below the layer containing the image you want to keep. This places the white background behind your image, effectively replacing the transparent areas with white.
Exporting with Transparency (if needed for other purposes):
If you still need to preserve the transparency for other uses but want it to appear white against white backgrounds, remember that you must export the image in a format that supports transparency. The most common format for this is PNG. To export with transparency:
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Go to
File > Export As > PNG. -
Make sure that no white background layer is visible if you truly need transparency, as any visible white layer will be included in the exported image, negating the transparency.
In summary, to make the transparent background appear white, add a white layer behind your image. To preserve transparency for export, ensure a format like PNG is used.
