Configuring settings for attachments
If you find that users are attaching many large files to their content and the application is slower as a result, you should consider creating limits by adjusting the size and quantity settings.
You can also enable and disable image previews, and specify the preview size for attached images. Note that embedded images have their own set of limits than can be configured. For more information about the differences, see Understanding embedded, attached, and uploaded images. For more information about embedded images configuration, see Configuring settings for embedded images.
Limiting allowed file types for attachments
Content type settings let you specify which kinds of files (as determined by their MIME type) should be allowed as attachments. You might find that some file types aren't needed, or are in fact unwanted. If you want to prevent some kinds of files from being uploaded, you can disallow them by adding them to the Disallowed Content Type list.
If you enable file attachment, you can disallow content types that you don't want people to upload. You can also add MIME types that aren't in the current list.
To limit allowed attachment types:
- In the Admin Console, go to .
- Under Content Type Settings, select one of the following:
- Allow all content types except those listed below: Select this option to allow all file types except specified in Selected Content types.
- Disallow all content types except those listed below: Select this option prohibit all file types except specified in Selected Content types.
- Under Content Type Settings, click Save.
- Copy the file types to the Selected Content types.
If required, you can add more content types by using the Add Content Type box. The configuration is saved automatically.