Diff Viewer

What is Diff Viewer?

Diff Viewer compares two text files and highlights what was added, removed, or changed. It provides a focused review surface for configuration updates, generated output, code snippets, documentation revisions, and any situation where manually scanning two similar versions would be slow or unreliable.

How to use Diff Viewer

Place the two versions of the text or code into the comparison inputs and review the highlighted differences.

When is Diff Viewer useful?

Diff Viewer is useful when reviewing configuration changes, debugging edits, checking generated output, or comparing two versions of a file.

Example

A practical example is comparing two JSON configuration files to identify changed keys and values.

Practical notes

Normalize line endings and formatting first when you need to find semantic changes rather than whitespace noise. A visual diff shows textual differences, but it cannot determine whether two programs behave the same or whether a configuration change is safe.