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The diff module is used to show differences between content revisions.
It replaces the normal Revisions tab seen when administering nodes.

Diff enhances the listing of revisions with an option to view the differences
between any two content revisions and revert back to older versions.

Access to this feature is controlled with the 'View revisions' permission.
The feature can be enabled/disabled with 'Compare revisions' settings available
on the configuration page for each content type.

It also provides a predefined block 'Inline differences' that can be added
to any layout by using Backdrop's layout administration.

This is a port from the Drupal module of the same name, currently version 7.x-3.4.


Install this module using the official Backdrop CMS instructions at


The main configuration settings can be found at admin/config/content/diff/settings.
These enable additional 'Compare revisions' settings to be found in the
configuration page for each content type - admin/structure/types.

Help & Documentation

See readme.txt for more information about usage.


This project is GPL v2 software. See the LICENSE.txt file in this
directory for complete text.

Current maintainers


Grateful thanks to the developers and maintainers (past and present) of the Drupal 7 module.

Maintainers for Drupal:

Supporting organisations for the D7 module