Confluence gives you the option of limiting the maximum size of a single file attachment. Confluence administrators should keep in mind that the amount of disk space used by Confluence is directly proportional to the number and size of attachments put into the system.

添付ファイルで許可される最大サイズを設定する手順:

1. 

2. 左側のパネルにある一般設定を選択する。
3. 編集を選択する。

4. Enter the maximum size next to Attachment Maximum Size'.

   The default is 10mb.
5. 保存を選択します 。

To configure the maximum 'index-able size of attachments':

By default, large attachment is defined as greater than 1 MB.
The threshold for attachments that won't get excerpts can be modified using the system property atlassian.indexing.contentbody.maxsize, which takes a size in bytes.

例

To specify 250 kb you would use the following JVM parameter:
-Datlassian.indexing.contentbody.maxsize=256000