Remove the Alpha Channel from a PNG
Strip transparency out of a PNG by flattening it onto a solid background colour — the result is a fully opaque image with no alpha channel. Useful when a tool, printer or format chokes on transparency, or when you want a predictable background instead of a see-through one. Runs in your browser; nothing uploads.
Drop PNG files here
Multiple files allowed
no files
Ready.
Why remove the alpha channel?
- Compatibility. Some print workflows and older software mishandle transparency, showing black or garbled edges.
- Predictable backgrounds. Pick the exact colour transparent areas become, instead of leaving it to whatever renders the image.
- Smaller, simpler files. An opaque image drops the alpha channel entirely.
FAQ
How do I make a transparent PNG have a solid background?
Drop it above, pick a background colour, and click Flatten. Transparent areas fill with your colour and the output is fully opaque. It runs in your browser.
Can I get the transparency back afterwards?
No — flattening is one-way; the transparent regions are permanently filled. Keep the original if you might need the alpha again.
What if I want the alpha as a separate image?
Use Extract alpha channel to save the transparency map as a grayscale PNG.