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turt2live
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Implementation requirements:
- Server (capability)
- Client (respecting capability)
- Client (unaware of capability)
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- Capability MSC4452: Preview URL capability element-hq/synapse#19715
- Element Web (aware) -> Disable URL Preview setting if disabled on the homeserver element-hq/element-web#33279
- Element Web (unaware) -> Doesn't explode!
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This was referenced Apr 23, 2026
clokep
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Apr 23, 2026
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| # MSC4452: Preview URL capabilities API | |||
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| It's possible for server-side implementations to want to disallow users the [GET /_matrix/client/v1/media/preview_url](https://spec.matrix.org/latest/client-server-api/#get_matrixclientv1mediapreview_url) endpoint. This is often done to either reduce excess | |||
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This is pretty much making a synapse config flag spec compliant, right?
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