TL;DR Mastering git diff helps you review changes before committing like a pro, ensuring you're aware of all modifications, catching errors early on, and maintaining a clean commit history. git diff displays differences between your current working directory and the last committed version, with options to customize output and ignore whitespace changes. Mastering Git Diff: The Secret to Reviewing Changes Before Committing As a full-stack developer, you know that version control systems (VCS) are an essential part of your daily workflow. Among the many features and commands that Git offers, git diff is one of the most powerful and underrated tools in your arsenal.