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### Sticker Messages
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This module allows users to send sticker messages in to rooms or direct
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messaging sessions.
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Sticker messages are specialised image messages that are displayed
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without controls (e.g. no "download" link, or light-box view on click,
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as would be displayed for for [m.image](#mimage) events).
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Sticker messages are intended to provide simple "reaction" events in the
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message timeline. The matrix client should provide some mechanism to
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display the sticker "body" e.g. as a tooltip on hover, or in a modal
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when the sticker image is clicked.
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#### Events
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Sticker events are received as a single `m.sticker` event in the
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`timeline` section of a room, in a `/sync`.
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{{% event event="m.sticker" %}}
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#### Client behaviour
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Clients supporting this message type should display the image content
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from the event URL directly in the timeline.
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A thumbnail image should be provided in the `info` object. This is
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largely intended as a fallback for clients that do not fully support the
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`m.sticker` event type. In most cases it is fine to set the thumbnail
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URL to the same URL as the main event content.
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It is recommended that sticker image content should be 512x512 pixels in
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size or smaller. The dimensions of the image file should be twice the
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intended display size specified in the `info` object in order to assist
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rendering sharp images on higher DPI screens.
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