File Diff Checker

    Compare, merge, and export — all in your browser. Unified view, change navigation, and multi-format export.

    Original: 0 lines|Modified: 0 lines
    Original1 line
    Modified1 line

    Why use this tool?

    Smart Comparison

    Line-by-line diff engine with configurable options for whitespace, case sensitivity, and trailing spaces.

    Instant Results

    All processing runs locally in your browser — no uploads, no waiting, zero latency on any file size.

    Privacy First

    Your data never leaves your device. No server-side processing, no storage, no tracking of content.

    Flexible Export

    Download diff reports as JSON, CSV, Excel, or PDF. Merge results and download the final output.