Converting KML Files to Hosted Feature Layers within ArcGIS Online/Portal

dgreenin — Wed, 17 Dec 2025 19:12:05 GMT

Good Afternoon,

I am currently looking for the a solution that meets the following requirements:

KML files can be converted directly to hosted feature layers within ArcGIS Online/Portal.
KML files are uploaded directly from computer and not hosted as items within ArcGIS Online/Portal.
The created hosted feature layers maintain the same symbology as the original KML files.

My current understanding:

KML files can be uploaded to ArcGIS Online/Portal but remain as KML file types limiting usage and functionality within Web Maps (ie. cannot alter symbology, no labeling, no attribute table).
Map Viewer analysis tools do not offer a KML to Hosted Feature Layer conversion.
KML files can be converted to feature layers within ArcGIS Pro and then published to ArcGIS Online/Portal. *This is a limitation if users are not familiar with ArcGIS Pro.

In this case, publishing a custom ArcGIS web tool appears to be the best approach using either of the following options:

Publishing an ArcGIS Pro python toolbox to ArcGIS Online/Portal as a web tool.
Publishing an ArcGIS Notebook hosted within ArcGIS Online/Portal as a web tool.

Any advice and/or examples would be greatly appreciated.

Best,

Re: Converting KML Files to Hosted Feature Layers within ArcGIS Online/Portal

dmorrissey_VHB — Wed, 18 Mar 2026 12:12:19 GMT

It looks like you didn't get any help on this. Did you make any progress? I'm also very interested.

Re: Converting KML Files to Hosted Feature Layers within ArcGIS Online/Portal

MirandasheherMcCall — Tue, 02 Jun 2026 19:33:28 GMT

Came here for this same inquiry!
@dgreenin did you successfully publish a toolbox for Enterprise portal uses to convert? If so, do you mind sharing a how-to and the script?

topic Re: Converting KML Files to Hosted Feature Layers within ArcGIS Online/Portal in ArcGIS Notebooks Questions

Converting KML Files to Hosted Feature Layers within ArcGIS Online/Portal

Re: Converting KML Files to Hosted Feature Layers within ArcGIS Online/Portal

Re: Converting KML Files to Hosted Feature Layers within ArcGIS Online/Portal