Komizo privacy policy

In short

• Komizo downloads the files you ask it to, from the servers they live on, and talks to no one else.
• The browser extension sends a download’s address, and that website’s cookies for it, to the Komizo app on your own Mac, over your Mac’s loopback address. Nothing leaves your computer by that route.
• It has no account, no analytics and no tracking, and collects no data about you.

The network

When you download a file, Komizo connects to the server the file comes from, usually over several connections at once, with the address, referrer, cookies and browser identity the extension passed along, so the server treats the download as it would have treated the browser’s. Cookies are only sent to the site they came from, never to another host a redirect leads to. Those servers see your IP address, as they would from your browser, under their own privacy policies.

When you grab a video, Komizo fetches that video’s parts the same way. For a Facebook video page it loads the page itself, offscreen, to find the file; that load carries no cookies of yours.

When the extension’s popup lists the videos a page plays, Komizo reads the start of each one (a few hundred kilobytes) or its playlist, from the same servers and with the same details, to learn its length and whether it has picture and sound. That is how it tells which one you are watching and which separate picture and sound belong together. It saves nothing from those reads.

Once a day, from version 0.2.0, Komizo asks GitHub for the number of its latest release (api.github.com), so it can tell you when a newer one is out. The request carries nothing about you or your downloads; GitHub sees your IP address, as any website would. Turn it off in Komizo’s Settings, under General.

The installer command contacts GitHub to find the latest release and downloads it from there.

Komizo makes no other requests.

The browser extension

The extension asks the browser for permission to read every site, because it has to catch downloads wherever they start and read the cookies a download needs. It uses that for nothing else. It sends the address of a download, that site’s cookies, the page’s address and title, and the browser’s identity string to the Komizo app at 127.0.0.1:48512, an address that only programs on your own Mac can reach, and only after you have allowed that browser in the app. On video pages it also notes which media the page’s player fetched, and the address, length and picture size of the video playing on screen, to list them in its popup with the one you are watching first; that list lives in the browser’s memory and is gone when the tab closes. To list a stream once rather than each of its parts, it reads the stream’s master playlist from the site, as the player just did.

What stays on your Mac

Komizo keeps its list of downloads and its settings in ~/Library/Containers/com.zewify.komizo/Data/Library/Application Support/Komizo/library.json, inside its own sandbox container. That file holds each download’s address and the cookies the extension sent for it, so a paused download can resume later. Nothing in it is synced or uploaded anywhere. The files you download go to your Downloads folder, or the folder you chose.

Deleting everything

Quit Komizo, remove the extension from your browser, then delete the app and the folder ~/Library/Containers/com.zewify.komizo. Your downloaded files are yours and stay where they are. There is nothing held anywhere else to ask us to delete.

Changes

If Komizo ever starts keeping or sending something new, this page changes first, and the date at the top changes with it.

Contact

Questions about this policy go to support@zewify.com.