Compare proofs in the proofing viewer
You can view sidebyside comparisons of two proofs. These can be two versions of the same proof, or two completely separate proofs.
Compare proof versions compareproofversions

Open the proof that has multiple versions you want to compare.

In the upperleft corner of the proofing viewer that displays, click the name of the proof. Then, in the list of versions that appears, click the Compare icon next to the version you want to open and compare.
The proofs display side by side, with the newer version on the left side.

Continue with Use the compare tools.
Compare separate proofs compareseparateproofs
You can compare two separate proofs.
Compare separate proofs in Workfront compareseparateproofsinworkfront
For information about comparing separate proofs from the document list within Workfront, see the Compare two different proofs section in the Compare proofs article.
Compare separate proofs in Workfront Proof compareseparateproofsinworkfrontproof

Open one of the proofs you want to compare in the proofing viewer.

Click the Compare Mode icon.
The viewing area splits in half and the proof displays both on the left and on the right side of the proofing viewer. 
Click the folder icon above the proof either on the left or the right side to list the other proofs within the same folder.

In the list, click the name of the proof that you want to compare with the proof currently open in the proofing viewer.
Both proofs appear.

Continue with Use the compare tools.
Use the compare tools usethecomparetools
The proofing viewer provides various tools for comparing proofs effectively and efficiently.
Autocompare proofs autocompareproofs
Autocompare does a pixelbypixel comparison between two static or video proofs. Any differences detected are highlighted in red in the proof on the left.
Autocompare is not available when you are comparing interactive proofs.
To autocompare two proofs:

Begin comparing proofs in either of the following ways:
 Compare two versions of the same proof (see Compare proof versions in this article).
 Compare two separate proofs (see Compare separate proofs in this article).

Click the Autocompare icon.
Any differences between the two proofs are highlighted in red in the proof on the left.

(Optional) Click the Switch icon to change the active side so that differences are shown on the proof on the right side. By default, differences are shown on the proof on the left side.

(Optional) Click the Color icon to change the color and opacity used when to highlight differences.
Compare proofs in an overlay compareproofsinanoverlay
Overlay comparison enables you to view differences between two static proofs by viewing the two proofs as a single proof, while providing a vertical divider down the center of the proof. As you pan the proof across the vertical divider, the differences are displayed.
To enable overlay comparison:

Begin comparing proofs in either of the following ways:
 Compare two versions of the same proof (see Compare proof versions in this article).
 Compare two separate proofs (see Compare separate proofs in this article).

Click the Overlay icon.
The two proofs are displayed as a single proof, with a vertical divider down the center of the proof.

Do either of the following:
 Pan the proof across the vertical divider. As you pan, you see the proof on the left on the left side of the vertical divider, while the proof on the right is displayed on the right side.
 Move the vertical divider to the left and right. As you move the divider, you see the proof on the left on the left side of the vertical divider, while the proof on the right is displayed on the right side.
Simultaneous navigation comparison simultaneousnavigationcomparison
Simultaneous navigation is enabled by default when comparing proofs. It is available when comparing a static proof and a static proof, or when comparing a video proof and video proof. It is not available when comparing a static proof and a video proof.
Static proofs: When enabled on static proofs, simultaneous navigation locks the zoom level and position of the two proofs when panning or scrolling. When a proof contains multiple pages and simultaneous navigation is enabled, changing pages in one proof results in the page changing in the other proof.
Video proofs: When enabled on video proofs, simultaneous navigation remembers the time difference on the timelines of the two proofs.
To enable simultaneous navigation if it is not already enabled:

Begin comparing proofs in either of the following ways:
 Compare two versions of the same proof (see Compare proof versions in this article).
 Compare two separate proofs (see Compare separate proofs in this article).

Click the Simultaneous Navigation icon.

(Optional) Click the Reset icon at any time to reset the zoom level and position (for static proof) or the timeline (for video proofs).
Exit compare mode

Close the proof that you no longer want to view by clicking the (x) icon in the upperleft corner of the proof.
The proof that you do not close remains open in the proofing viewer.