TXT Comparator is a WinMerge-style Electron desktop app that compares two text files side by side. The comparison includes spaces, tabs and line endings, so differences you cannot see are caught too.
Changed lines get character-level highlighting, with visible markers for spaces, tabs, CR and LF. There is a difference-only mode plus previous/next navigation between changes.
02Key Features
Side-by-side diff — two-column comparison with line numbers
Character-level highlighting — shows exactly what changed inside a line
Visible whitespace markers — separate indicators for space, tab, CR and LF
Difference-only mode — hide identical lines to shorten the list
Diff navigation — jump to the previous or next difference
Multiple encodings — reads UTF-8, UTF-16 and Windows-1254
03Engineering Notes
Windows-1254 support is a deliberate choice: without it, comparisons of Turkish source files can be misleading.
Drag-and-drop and a file picker are both supported, and a portable Windows .exe can be produced.