CesiumGS/cesium

Improve docs for custom getFeatureInfo workflows for WMS and WMTS imagery

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#13,380 opened on Apr 8, 2026

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FCFcategory - doccategory - terrain and imagerygood first issue

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Description

Following discussion on https://github.com/CesiumGS/cesium/pull/12993, we should better document the process to supply custom getFeatureInfoFormat for WMS and WMTS.

We have a recently added WMTS example in this sandcastle https://sandcastle.cesium.com/?id=web-map-tile-service-picking

There is a good custom getFeatureInfo example here using open data https://github.com/CesiumGS/cesium/pull/12993#discussion_r2457547074

We could add an inline doc example here https://cesium.com/learn/cesiumjs/ref-doc/GetFeatureInfoFormat.html

Or on the WMS & WMTS classes inline docs.

Contributor guide

Research direction
Review the linked pull request and sandcastle examples to understand the custom getFeatureInfo workflow, then add documentation examples to the relevant classes.
Tech stack
javascript
Domain
frontend
Issue type
Documentation
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
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Active
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Clear
Prerequisites
Git
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75