Contact Us

    Questions about merging, bug reports, or business enquiries. We read every message.

    We only use this to reply to you. It is not added to any mailing list.

    Getting Help With a Merge

    Most questions we receive are about files that merged in an unexpected way rather than about the tool failing outright. The two most common causes are column headers that differ slightly between files, and a CSV saved with a delimiter your locale does not expect. Both are fixable, and both are much faster to diagnose if your message includes a few specifics.

    What to Include for a Fast Answer

    Because your files never reach us, we cannot look at the data ourselves. Describing the shape of the problem is the next best thing:

    • The file types involved and roughly how many files and rows you were combining.
    • The exact column headers that did not line up, if the issue is a mapping one.
    • Which browser and version you are using, since file handling differs between engines.
    • Any error message shown on screen, copied verbatim rather than paraphrased.

    What We Cannot Do

    We cannot recover a merge you have closed, retrieve a file you did not save, or inspect the contents of your spreadsheet to find the offending row. This is a direct consequence of the local-only design: there is no server-side copy of anything you have processed. If you need to send us a file to reproduce a bug, please construct a small sample with dummy data rather than sending real records.

    Business and Partnership Enquiries

    For partnership proposals, advertising enquiries or questions about using FileMerger inside an organisation, email us with "Business" in the subject line. If your compliance team needs to review how the tool handles data before approving it, point them at our privacy policy; the short version is that there is no data processor relationship to document because no data is transferred.

    Response Times

    FileMerger is maintained by a small team, and support is handled between other work. Expect a reply within two business days for most questions. Reports that include reproduction steps get answered fastest, because they can usually be confirmed immediately rather than requiring a round of clarifying questions.