Using diff module

The diff module let’s you view the difference between node revisions. It adds a tab on every node page where you can see a list of revisions which you can control via permissions.

Before we get started go to http://drupal.org/project/diff and download the module and place it in sites/all/modules.

Then enable it at Administer >> Site building >> Modules.

Using revisions and diff is fairly simple, if you are logged in as site admin just create a story node and edit it twice with Create new revisions ticked.

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After the second revision you’ll see a new tab called revisions. From this tab you can view a list of revisions and revert back at any time.

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If you click on the Show diff button you’ll be able to view the difference between selected revisions.

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You also have the ability to preview a diff on a node even before you save it by clicking on Preview changes.

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Lastly there are a couple of options that you can set on the content types edit page at Administer >> Content management >> Content types.

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If you have any feedback or need help please leave a comment.