FileConcat

Privacy

What leaves your device, and what doesn’t.

Most tools that read a document upload it to a server first. FileConcat does that work in your browser instead, so your files are never uploaded to be processed. To keep the tool honest, here is the full account of what stays with you, what we collect, and how to check it for yourself.

What is and isn’t sent

Never uploaded

  • Your files, and their contents. The documents you drop are read, filtered, and combined in this browser tab. The file bytes are never uploaded to us, or to anyone, to be processed.

  • No third-party reads them. PDF, Word, Excel, and the rest are extracted in your browser. There is no server API and no CDN in the path that sees your documents.

  • No account, no storage. There is no sign-up, no login, and no email. We do not keep a copy of anything you drop, because it never reaches us in the first place.

What we collect, and why

  • Anonymous product analytics. We use Microsoft Clarity to see how the tool is used and fix what is confusing. Because it records on-screen activity, a session recording can include your file names, folder structure, and the on-screen preview of the combined output. It is not tied to an account or an identity.

  • Standard analytics signals. Country-level location, browser, and device type, plus first-party analytics cookies (_clck, _clsk).

  • Repository imports you ask for. If you paste a GitHub, GitLab, or Bitbucket link, your browser fetches it directly from that host. That request goes to them, not to us.

  • Your settings. Filters and preferences are saved in your browser's local storage. They stay on your device and are never sent anywhere.

Check it yourself.

Open your browser’s network panel and drop a folder. Your documents are never uploaded. The requests you will see are the analytics beacon and, if you imported a repo, that fetch, never your files. Any content blocker stops the analytics, and the whole app is open source, so you can read exactly what it does.

Read the source on GitHub

Questions? Message @CeamKrier on X.

Last updated July 31, 2026 · back to FileConcat