The parameters resultOffset and resultRecordCount are not available as a query parameter in the GUI for Image Services.

Workaround

Modify the query URL to include the resultOffset and resultRecordCount parameters. Note that resultRecordCount and resultOffset only works if ObjectIDs are in a sequence. If the ObjectIDs are not in a sequence, modify the query parameter to include '&orderByFields=objectid'.

Example:

https://sampleserver6.arcgisonline.com/arcgis/rest/services/CharlotteLAS/ImageServer/query?where=1%3D1&objectIds=&time=&geometry=&geometryType=esriGeometryEnvelope&inSR=&spatialRel=esriSpatialRelIntersects&relationParam=&outFields=*&returnGeometry=true&outSR=&returnIdsOnly=false&returnCountOnly=false&pixelSize=&orderByFields=&groupByFieldsForStatistics=&outStatistics=&returnDistinctValues=false&multidimensionalDefinition=&returnTrueCurves=false&maxAllowableOffset=&geometryPrecision=&resultRecordCount=3&resultOffset=3

Steps to Reproduce