When I save a drawing as .png file to a local system, the background is coming out as black. How can I change that color to a white?

[AlexStar-IPG]

Saving a drawing as .png file to a local system, the background of the image is coming out as black. How can I change that color from default black to white or some other color? I do not see that configuration, for some reason.

[draw-io-triage-bot[bot]]

👋 Thank you for opening this issue!

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Summary: The user is asking how to change the background color of exported PNG files from black to white, as their PNG exports from draw.io have a black background. This is most likely caused by exporting with a transparent background (which renders as black in some viewers) or by dark mode settings affecting the export.

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💡 Possible Solution Found

We found a potentially relevant solution in a previous issue:

This is likely related to dark mode affecting exported colors. The solution is: 1) Go to Edit > Page Setup (or Format > Page) and set a white background color for the diagram, or 2) When exporting as PNG via File > Export as > PNG, check the Background option and set it to white (uncheck 'Transparent Background' if that option is checked). Additionally, if you're using dark mode (issue #4533), the dark mode can affect how colors appear in exports — try switching to light mode via Extras > Theme > Kennedy (or similar light theme) before exporting. In the desktop app, your OS dark mode settings may also influence the export colors.

📎 Source: #4533

Please check if this addresses your issue. If not, let us know what's different about your situation.

🔍 Possible Related Issues

This issue might be related to existing issues:

🟡 #4533 - Colors Affected by Dark Mode
Dark mode can cause exported images to have unexpected dark/black backgrounds, which matches the user's reported symptom.

Please check if any of these address your issue. If this is a duplicate, we may close this issue and continue the conversation there.

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[alderg]

Works for me. What are the exact steps? What version of the app are you using? What browser, operating system and versions?