Table of Contents

Introduction

It is possible to enforce different permissions for selected groups of users. This is useful for scenarios like

Increase the upload limits for Confluence admins to handle exception scenarios
Only the media team users can upload videos files which are large in nature
Restrict maximum size of images (png/jpg/gif) to 100kb, but allow PDF files to be up to 10mb
Limit customers to upload image files only whereas staff can upload pdf and office documents as well
Preventing abuse where users upload large zip files onto Confluence as their backup drive

How to change the setting

Log in as Confluence administrator
Go to Confluence Administration > Attachment Checker > Configuration
Click on the Edit Settings button to
1. Enable/Disable checking of file size limit based on groups
2. Change the Error Message if the file size limit has exceeded
To edit the file size limit, click on the Edit File Size Limit button

Editing File Size Limit

Each File Size Limit rule consist of the following components

Attribute	Description
Extension	The file extension applicable for this rule
Maximum Size	The number that specify the maximum size of the file. It can only accept integer values. If you want to block upload of the type, you can use 0
Unit Size	KB or MB

Example

A possible File Size Limit rule will be members of the staff-users group in Confluence can upload mp4 file type with file size up to 100 MB

The following operations are available in this screen

Enable/Disable the file size checking

Click on the pen icon
Select the option in the radio button
Click on the Tick icon to save the change

Change the group associated for the Group 1

The default group associated with Group 1 and Group 2 are confluence-administrators and confluence-users respectively. It is possible to switch to other groups.

Click on the pen icon beside the group name
Type to search for groups with matching name
Select the group
Click on the Tick icon to save the change

Add a new File Size Limit Rule for the group

Enter the values at the top row of the group
Click on the Add button on the first row of the section

Edit a File Size Limit Rule for the group

Find the rule to be edited
Mouse over the row to be edited. A pen icon will appear
Click on the pen icon to toggle edit mode
Update the value
Click on the Update button to save

Delete a File Size Limit Rule for the group

Click on the Delete button at the right side of the row

How it works

The default setting for Group 1 is confluence-administrators group
The default setting for Group 2 is confluence-users group
When a file is uploaded, it will determine the user performing the upload belongs to which group. The sequence of checking is in the workflow diagram below

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