Merge pull request #1975 from matrix-org/rav/thumbnail_dimensions

Make thumbnail dimensions mandatory

api/client-server/content-repo.yaml

@@ -202,6 +202,7 @@ paths:
           type: integer
           x-example: 64
           name: width
+          required: true
           description: |-
             The *desired* width of the thumbnail. The actual thumbnail may not
             match the size specified.
@@ -209,6 +210,7 @@ paths:
           type: integer
           x-example: 64
           name: height
+          required: true
           description: |-
             The *desired* height of the thumbnail. The actual thumbnail may not
             match the size specified.

changelogs/client_server/newsfragments/1975.clarification

@@ -0,0 +1 @@
+Clarify that ``width`` and ``height`` are required parameters on ``/_matrix/media/r0/thumbnail/{serverName}/{mediaId}``. It is somewhat meaningless to request a thumbnail without specifying a desired size, and Synapse has never permitted such requests.