IntelliJ: Viewing diff of all changed files between local and a git commit/branch

Git Problem Overview

Using IntelliJ's diff viewer is a very nice way to review code because you can make changes in your local version with all the capabilities of the IntelliJ code editor (refactoring, completion, etc).

Unfortunately I have not worked out how to do the most important thing when you're doing code reviews in IntelliJ, namely: Looking at the diff of all the changed files in the working tree (checked out to the branch you want to merge from) and another branch (the branch you plan to merge into, e.g. "master).

Does anyone know how to do this?

Git Solutions

Solution 1 - Git

This has now been implemented. In order to compare two branches you do:

Check out one of the branches you want to compare with.
Select the branch you want to compare with in the Git branch popup in the status bar in the bottom right of the IntelliJ window. A popup with some options is shown.
Select the "Compare" option.
This by default shows all the commits you can also select the "Diff" tab to show the actual changes.

This is all described in much greater detail in one of their blog posts.

Solution 2 - Git

Though Jon Tirsen's answer is correct, you need to go through entire text in order to understand how to do that.

Here's the images of the same in mac.

I am currently working with hello_world and want to compare with master.

UPDATE: In the new UI, click on Show Diff with Working Tree

Next a window will pop up. Select Files and press cmd + d

Another window which shows diff. You can perform many different types of diff. Use cmd + shift + ] and cmd + shift + [ to shift between files.

Diff Tip: IntelliJ provides advanced diff features. You can check those on the 3rd image.

Solution 3 - Git

This has been changed in the 2020 version update:

You now need to do the following:

Checkout one of the branches you want to compare.
Open the Branches menu.
Select the other branch you want to compare with.
Select "Show Diff with Working Tree".

Solution 4 - Git

This is implemented now. You right-click on the project and select "Git - compare with branch..." and choose master branch. Done. Diff all files.

Solution 5 - Git

If you just want to compare your currently open file with another branch in a side-by-side fashion, just go to VCS -> Git -> Compare with Branch.

Solution 6 - Git

Right Click on the class and select the Git option where you will see compare with branch option where you can select the particular branch.

Solution 7 - Git

If you want to compare the whole project.

First. Select/click the project you are working on.
Go to Git(tab) > Selected Directory > Compare with branch
Then select the branch you want to compare. (ie origin/main)

Then you will get a tree of the different files between branches. You can select each one and compare, edit, delete, add anything you may need.

Content Type	Original Author	Original Content on Stackoverflow
Question	Jon Tirsen	View Question on Stackoverflow
Solution 1 - Git	Jon Tirsen	View Answer on Stackoverflow
Solution 2 - Git	unknownerror	View Answer on Stackoverflow
Solution 3 - Git	BlueYoshi	View Answer on Stackoverflow
Solution 4 - Git	WesternGun	View Answer on Stackoverflow
Solution 5 - Git	urgentx	View Answer on Stackoverflow
Solution 6 - Git	sonal balekai	View Answer on Stackoverflow
Solution 7 - Git	Mauricio Toledo	View Answer on Stackoverflow