Remove Transparent Background (Fill with a Color)
Transparent PNGs can look broken in places that don't support transparency — some document editors, print services and older apps show black or checkerboard backgrounds.
- Never uploaded
- Instant, no sign-up
- Works offline
Drop images here
Files stay in your browser — nothing is uploaded.
About this tool
This tool fills every transparent and semi-transparent pixel with a solid color you choose (white by default), giving you a flat image that looks right anywhere.
How it works
- 1
Add a PNG or WebP with transparency.
- 2
Choose the fill color.
- 3
Download the flattened image.
Features
- Any fill colorWhite, black or any brand color.
- Smooth edgesSemi-transparent edges blend into the new color instead of turning jagged.
- Print-readySave as JPG for print services that reject transparency.
- Private by designEverything runs on your device. No uploads, no account, no watermark, and EXIF/GPS data is stripped from the result.
Supported formats
Input: JPG, PNG, WebP, GIF (first frame), BMP, SVG, AVIF. Output: PNG or WebP keep transparency; JPG gets a solid color.
Frequently asked questions
Why does my PNG show a black background?
The app viewing it doesn't support transparency and shows transparent pixels as black. Flatten it onto white here.
Does this change the image size?
No, only the transparent areas are filled.
Can I add a colored background to a logo?
Yes, pick any fill color before downloading.
Are my images uploaded to a server?
No. Files are decoded, processed and re-encoded by your browser using the canvas API and Web Workers. Nothing is sent to any server, and there is no account or storage. Closing the tab discards everything.
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