Limitations of px.imshow
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@feiler98 is already working on this.
Since Feb 4, 2026.
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Description
Dear plotly developers,
I wanted to know if there is a limit for the size of a heatmap generated with px.imshow()
I am currently using it for creating large heatmaps of 1,000+ rows and 10,000+ columns (with custom hovertemplate), but at a certain size saving it as plotly.offline.plot() as html file, the whole document is blank.
Is this a limitation of the plotting method and/or is there a setting that could be changed to increase the heatmap size and complexity (e.g. more information integrated into the hovertemplate)
I am looking forward to your reply!
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