When using iPad, download chart as image from dashboard yields blank file

[sfirke]

Bug description

Browse to a dashboard in Safari on iPad, download a chart as image from a dashboard. The resulting file has the chart title but is otherwise white/blank.

Screenshots/recordings

No response

Superset version

6.0.0

Python version

I don't know

Node version

I don't know

Browser

Safari

Additional context

Maybe not a huge priority for other since how often is someone in this situation ... but I did get a frustrated user coming to me today about it! Verified on my own iPad.

Checklist

• I have searched Superset docs and Slack and didn't find a solution to my problem.
• I have searched the GitHub issue tracker and didn't find a similar bug report.
• I have checked Superset's logs for errors and if I found a relevant Python stacktrace, I included it here as text in the "additional context" section.

[dosubot]

This isn't a documented or widely reported issue for Safari on iPad, but there are known limitations with Superset's chart image export. Superset uses libraries like dom-to-image-more for some chart types, which only capture what's visible in the DOM, and ECharts' export API for others. Blank image downloads have been seen before (on Chrome) due to canvas rendering issues, and a fix was merged in Superset master to preserve canvas content during export—though there's no explicit Safari/iPad-specific handling in the code or docs (reference).

If you're still seeing blank images, try making sure the chart is fully rendered before exporting, check the browser console for errors, and test with other chart types or browsers. If possible, try updating to the latest Superset version to see if recent fixes help. If the problem persists, gathering browser console logs and Superset logs will help diagnose further.

To reply, just mention @dosu.

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