---
title: "GitHub Pull Request Review Guide"
date: "2019-03-31T01:07:39+00:00"
summary:
image:
type: "article"
url: "/acquia-cloud-platform/help/89426-github-pull-request-review-guide"
id: "243d4d58-6f4c-4897-9de0-7c475ba45883"
---

If you are like me and have to spend a lot of time reviewing large patches on GitHub you know it is a daunting task.

Reviewing a Large Pull Request Before
-------------------------------------

There is no easy way to navigate through multiple diffs so you have to scroll a lot (and I mean a LOT) and watch very carefully to not to miss what you are looking for.

It is tiring and frustrating.

![Code comparison interface with many changes. Red arrow highlights scrollbar length. Text overlay reads, "Holly hell, that's a lot of scrolling!"](https://acquia.widen.net/content/0ca2f799-1685-4794-a4c1-b80d4e070bf4/web/url_2a95bc6dcf3936ecda6081f294e9ddb5.png)

Navigating the Pull Request After
---------------------------------

I asked GitHub to at least add hotkeys so I could jump between files, instead of scrolling like a caveman. They said no. So I shook my wooden club and built a Chrome extension just for that.

Now I was drunk on power, about what an extension could do. So I built the ultimate navigation widget - an hierarchical view of files.

![Code comparison interface showing file changes, with a red arrow labeled "Aww yiss" pointing to a file named "app-templates.js."](https://acquia.widen.net/content/868a11bd-99c6-41ce-8f36-70859b9c0432/web/url_9e524520c0305dfd382112d6c880695f.png)

This sidebar allows you to:

1.  See the scope of changes at a glance.
2.  Collapse folders so you can focus on what's important.
3.  Click on a filename to navigate to the diff.
4.  See how many comments posted for a file so you know there is a discussion (not shown on the screenshot).

Additional achievements unlocked:

*   Jump between files with j/k keys.
*   Jump between comments with n/p keys.
*   Toggle the sidebar with the z key.

Please give it a try. I hope you'll find it as useful as I do: [https://chrome.google.com/webstore/detail/github-code-review/lminappfll…](https://chrome.google.com/webstore/detail/github-code-review/lminappfllpnijhgafphnmcdfbnppmac)

For anyone who wants to see the source code, or even contribute to the project, here is the link to the repo: [https://github.com/irek02/chrome-github-code-review](https://github.com/irek02/chrome-github-code-review). I am big fan boy of Test Driven Development (TDD), so major features of the extension are built with tests first.

It takes a bit of learning to setup a TDD-enabling environment for a JavaScript project, but the results are worth it: you build bulletproof code and you do it much quicker.