Privacy Policy

Folder & File Size Scanner

Nothing leaves your machine. The scanner runs locally, stores results locally, and makes zero network calls.

Last updated: 17 August 2026  ·  Effective: 17 August 2026

Summary: Folder & File Size Scanner does not collect, transmit, sell, or share any personal information. The tool runs entirely on your local machine. All scan results stay on your computer.

1. Who we are

Folder & File Size Scanner ("the tool", "we", "us", "our") is developed and published by Subverting Complexity, based in South Africa. This Privacy Policy explains how the tool handles information when you use it.

This policy is published in accordance with the Protection of Personal Information Act, 2013 (POPIA) of South Africa.

2. Information we do not collect

Folder & File Size Scanner is a local, offline tool. We do not collect any of the following:

  • Personal information such as your name, email address, phone number, or postal address.
  • Account credentials — the tool has no accounts, no sign-up, and no login.
  • Usage analytics, telemetry, or crash-reporting data.
  • Advertising identifiers, cookies, or tracking technologies.
  • File contents — the tool reads file metadata (name, size, path, last-modified date) but never opens or reads the contents of your files.

3. Data stored on your machine

The tool stores scan results so you can revisit them without rescanning. This data is held locally on your machine only and is never transmitted anywhere. This includes:

  • Scan cache — JSON files in your local application data folder containing directory paths, file sizes, and file metadata from completed scans. The tool automatically keeps only the 20 most recent scans.
  • Theme preference — a single browser localStorage entry recording your light/dark theme choice.

Cached scan data naturally contains file paths from your filesystem, which may include your Windows username as part of directory paths (e.g. C:\Users\YourName\...). This information is never transmitted off your machine.

You can remove all cached data by deleting the cache folder, or by simply uninstalling the tool.

4. No network communication

Folder & File Size Scanner makes zero network calls. The tool runs as a local web server on your machine (localhost) and communicates only between your browser and this local server. No data is sent to any external server, cloud service, or third party. The tool functions identically with or without an internet connection.

5. Read-only operation

The tool operates in a strictly read-only mode. It scans your filesystem to report sizes and may suggest directories you could clean up, but it never modifies, moves, or deletes any files. All cleanup actions are left entirely to you.

6. Your rights under POPIA

Because Folder & File Size Scanner does not collect or process your personal information, there is no personal data held by us to access, correct, or delete. Nonetheless, under POPIA you have the right to:

  • Be notified about whether your personal information is being processed.
  • Request access to any personal information held about you.
  • Request correction or deletion of your personal information.
  • Object to processing and to lodge a complaint with the Information Regulator.

If you believe we hold any personal information about you, you may contact us using the details below, and you may also contact South Africa's Information Regulator (inforegulator.org.za).

7. Changes to this policy

We may update this Privacy Policy from time to time. When we do, we will revise the "Last updated" date above. If a future version of the tool ever begins to collect data, we will update this policy and request consent where required before doing so.

8. Contact us

For any questions about this Privacy Policy or your privacy, contact our Information Officer at:

Subverting Complexity
Email: [email protected]
Web: subvertingcomplexity.com