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Click "Sample" to view an example
Click the Settings button for advanced options

JS Diff

This free online JS diff tool compares two JavaScript files and highlights the differences.

All tools on this site run entirely in your browser locally. No data is uploaded to any server.

Features:

JS Format: Auto-formats as you type
Local files: Open a local JS file and diff it directly
History Restore: Restore content from last session, only available when the input is empty and history exists

Diff Mark:

Red Mark: Content that appears only on the left compared to the right
Green Mark: Content that appears only on the right compared to the left
Line number redirect: Click a diff line to jump to it

Features
Shortcuts

When the cursor is in the editor,

F11

Fullscreen

Ctrl - F

Find

Ctrl - Enter

Find Next

Ctrl - Shift - Enter

Find Prev

Ctrl - H

Replace

Ctrl - Shift - H

Replace All

Ctrl - Home

Jump to Start

Ctrl - End

Jump to End

Ctrl - Z

Undo

Ctrl - G

Go to Line