Last updated: October 5, 2026
PackFit shrinks your Word, Excel, PowerPoint, and ZIP files entirely on your device. Your files are never uploaded, transmitted, or stored anywhere. We collect no personal data.
All processing happens locally in your browser using JavaScript (fflate for unzipping/rezipping and HTML canvas for image recompression). Your files never leave your computer. You can disconnect from the internet after the page loads and PackFit keeps working.
The PackFit browser extension collects nothing: no analytics, no telemetry, no cookies, no account. If we ever add privacy-friendly, cookieless analytics to the website version, they will never include your files or any personal data, and this policy will be updated first.
Purchases are processed by Lemon Squeezy (their privacy policy applies to checkout). Keys bought through Lemon Squeezy are checked once, with Lemon Squeezy, when you enter them; that request contains only the key. Older bundle keys (they start with FIT1) are checked on your device, with no request. After that, the key is kept only in your browser's local storage and isn't checked again.