An image proxy is used by Mattermost apps to prevent them from connecting directly to remote self-hosted servers. Configure an image proxy by going to System Console > Environment > Image Proxy, or by editing the config.json file as described in the following tables.

Enable image proxy

Available in legacy Enterprise Edition E10/E20

An image proxy anonymizes Mattermost app connections and prevents them from accessing insecure content. true: (Default) Enables an image proxy for loading external images. false: Disables the image proxy.	System Config path: Environment > Image Proxy config.json setting: ".ImageProxySettings.Enable": true", Environment variable: MM_IMAGEPROXYSETTINGS_ENABLE
See the image proxy documentation to learn more.

Image proxy type

Available in legacy Enterprise Edition E10/E20

The type of image proxy used by Mattermost. local: (Default) The Mattermost server itself acts as the image proxy. atmos/camo: An external atmos/camo image proxy is used.	System Config path: Environment > Image Proxy config.json setting: ".ImageProxySettings.ImageProxyType": "local", Environment variable: MM_IMAGEPROXYSETTINGS_IMAGEPROXYTYPE
See the image proxy documentation to learn more.

Remote image proxy URL

Available in legacy Enterprise Edition E10/E20

The URL of the atmos/camo proxy. This setting isn’t needed when using the local image proxy.

System Config path: Environment > Image Proxy config.json setting: ".ImageProxySettings.RemoteImageProxyURL", Environment variable: MM_IMAGEPROXYSETTINGS_REMOTEIMAGEPROXYURL

Remote image proxy options

Available in legacy Enterprise Edition E10/E20

The URL signing key passed to an atmos/camo image proxy. This setting isn’t needed when using the local image proxy type.	System Config path: Environment > Image Proxy config.json setting: ".ImageProxySettings.RemoteImageProxyOptions", Environment variable: MM_IMAGEPROXYSETTINGS_REMOTEIMAGEPROXYOPTIONS
See the image proxy documentation to learn more.