File Comparison (2-Way)

WinXMerge provides a powerful 2-way file comparison view inspired by WinMerge.

Diff Display

• Block-level grouping: Consecutive changes are merged into a single diff block (WinMerge-style)
• Line-level diff: Additions, deletions, changes, and moves are displayed with color coding
  • Green: Added lines
  • Red: Removed lines
  • Yellow: Modified lines
  • Blue: Moved lines
• Word-level (character-level) diff: Modified lines show exactly which characters changed with inline highlighting

Diff Navigation

Navigate between diff blocks using the toolbar or keyboard:

Action	Shortcut
First diff	Alt+Home
Previous diff	Alt+↑
Next diff	Alt+↓
Last diff	Alt+End

Click a line number in either pane to jump to that diff block.

Merge Operations

• Copy Left → Right: Copy the current diff block from the left pane to the right
• Copy Right → Left: Copy from the right to the left
• Copy & Advance: Copy and automatically move to the next diff block
• Copy All: Copy all diff blocks in one direction
• Inline buttons: Click ▶ / ◀ between diff lines for per-block merging

Two-Pane Layout

The side-by-side display shows both files with synchronized scrolling. A location pane (minimap) on the right shows an overview of all diff positions in the file.

Moved Line Detection

Lines that have been moved (not just added/removed) are automatically detected and highlighted in blue, making it easy to distinguish structural changes from content changes.

Diff Detail Pane

The bottom pane shows the currently selected diff block in detail:

• Left panel: removed/modified lines
• Right panel: added/modified lines
• Character-level background highlighting on changed segments

The pane height is resizable by dragging the top handle.

Diff Comments

Add per-block notes in the detail pane’s Note field. Comments are:

• Persisted to the session
• Included in HTML and Excel export reports
• Exportable as CSV/JSON via File → Export All Comments