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images · alpha
Flatten PNG Transparency
Replace transparency with a solid background — every pixel becomes fully opaque.
A little guidance. A better result.
How to use Flatten PNG Transparency
Replace transparency with a solid background — every pixel fully opaque.
Prepare your input
Open a PNG with transparency.
Use the workspace
Choose the background colour and inspect the preview.
Check your result
Save and check previously transparent edges.
Know the limits
Flattening removes transparency from the output; keep the original if you need editable alpha later.
Where does my input go?
This browser tool processes your input on your device. Optional analytics is a separate choice; it is not needed to use the tool. Keep your original until you have checked the result.
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