Is it possible for List items to set their height dynamically?

Question

Hi there, I'm new to Experience Builder (be gentle with me!) and I'm having problems configuring a List widget how I would like. I've created an Experience consisting of three columns using the Grid layout configured as follows:

* The left most column has an Accordion with some Filters
* The middle column has a List element
* The right hand column has a map

Users interact with the Experience using the Filters to limit the records shown in the List.  The problem I'm having is that the individual List elements seem to have a fixed height but the contents are variable depending on the feature displayed.  In the image below you can see the problem that there is a big bit of empty space in the KB House item  because that feature has less information to display:

What I'd like is for the individual List elements to dynamically set their size depending on their contents so that it displays as follows:

The only setting I can see in Experience Builder that controls the height of the individual List items requires a value in pixels, meaning that all list items are displayed at the same height, regardless of their contents:

Does anyone know if I'm missing something or if there is another way of achieving what I'm after (i.e. is there an alternative element to the List I could use instead)?  I'm using ArcGIS Online, not Enterprise.

Any help/ideas would be greatly appreciate.

MappyIan · Answer

This has been addressed in the June 2026 update under ENH-000134127:

'Description: Provide the ability to automatically adjust the size of the items in List widget based on the selected feature attributes, in ArcGIS Experience Builder.'

In the What's New Experience Builder documentation for the June 2026 update it says:

'List widget—For a row list that uses one of the Flow templates, you can set the list item's height to Auto. If you do, the list item's height matches the height of the tallest Image, Text, or Button widget in the row.'

Having given it a quick test, it does indeed seem to work as expected.  Shame it's limited to using one of the 'flow' templates but they can be customised as required so perhaps it's not a problem.

MappyIan · Answer

I've logged this as an idea in the absence of any solution: https://community.esri.com/t5/arcgis-experience-builder-ideas/make-the-height-of-list-items-dynamic-rather-than/idi-p/1654169/jump-to/first-unread-message

Please give the Idea some kudos if you think it would be a helpful addition to Experience Builder.

MappyIan · Answer

Thanks @JeffreyThompson2. I had considered making the images larger but it's not really feasible for a bunch of reasons.  Thanks for taking the time to respond though, it's much appreciatd.