Privacy Policy

This policy was last modified on 5 September 2021.

Jumpcat is a browser extension for The Browser is a sensitive environment. Jumpcat is committed to protecting our personal information and privacy.


Jumpcat does not send sensitive data to some remote server. All your personal data (browsing history) are stored in the browser storage.

Jumpcat tracks basic usage metrics (outlined below). This allows us to make better product decisions. All telemetry data are anonymous. When we do a public launch, these will be opt-in, but for now, we require them. So if you aren't comfortable with that, please wait for our public launch. At this time, Jumpcat is still in private beta.

What Information Jumpcat Collects and Why


Every time you navigate on, Jumpcat stores the current page URL and time in the WebExtensions Stroage. This store is exclusively accessible from Jumpcat browser extension. No data are being sent to any remote server. Your data stay local in your browser.

App usage

Each time you open the Jumpcat command menu we send a tracking event to our tracking provider Mixpanel. This tracking event includes the time, counter, your uuid (randomly generated) and the search mode. Note: Only the search mode (e.g. `history`, `command`, or `help`) is sent. Any search entered in the search input is not sent.

Information Jumpcat Does Not Collect

Other than what is mentioned above, Jumpcat never sends any user data / personally identifiable data to any remote server.

How does Jumpcat work

Jumpcat is built using web technologies (html/css/javascript) and using the WebExtensions API. When visiting, a content script will be programmatically injected into the page at runtime for the following purposes:

  • To register a keyboard listener, needed to open Jumpcat using a shortcut combo (e.g CMD+k)
  • To store the current page URL in the WebExtensions Stroage API
We try to keep this content script small as possible to not impact the performance of

Technologies we use


We use Mixpanel to track and analyze how users interact with Jumpcat. In the “What Information Jumpcat Collects and Why” section, we list all data that we collect. See the Mixpanels's privacy terms for full details.

Your acceptance of these terms

By using Jumpcat, you signify your acceptance of this policy. If you do not agree to this policy, please do not use Jumpcat. Your continued use of Jumpcat following the posting of changes to this policy will be deemed your acceptance of those changes.

Changes to our Privacy Policy

If we decide to change our privacy policy, we will post those changes on this page, and/or update the Privacy Policy modification date below. We encourage Users to frequently check this page for any changes to stay informed about how we are helping to protect the personal information we collect.

Contacting Us

If there are any questions regarding this privacy policy you may contact us using the information below.

jumpcat (at) stefanbuck .com