Overview
Diff Checker is a plugin for comparing Luau scripts directly inside Studio. Open two scripts, and instantly see exactly what changed β line by line, with syntax highlighting and a scrollable change overview.
Features
Comparison
- Compare any two Script, LocalScript, or ModuleScript instances
- Or paste raw code directly to compare against an open script
- Clearly marked additions and removals with colored gutter indicators
Interface
- Tab-based workflow: run multiple diffs at once and switch between them
- Middle-click or press Γ to close a tab
- Minimap indicators on the right edge show the distribution of changes at a glance β click any marker to jump directly to it
- Clean dark UI with syntax highlighting powered by @boatbomberβs Highlighter
Performance
- Virtualized line rendering; only visible lines are active, so even scripts with thousands of lines stay smooth while scrolling
Usage
- Open a script in the Script Editor
- Click + New Diff in the plugin toolbar
- Open a second script β the diff appears automatically
- Or paste code into the text box and click Compare Code
Installation
Get the plugin from the Creator Store.
https://create.roblox.com/store/asset/131039360484980/Diff-Checker
Feedback
If you run into issues or have suggestions, reply below.

