Browser Extension Privacy

Last updated: May 2026 · v0.4.1

This privacy policy describes how the Reverium — Save Reference browser extension handles your data.

TL;DR

We collect nothing. We send no data anywhere. The Extension only talks to the Reverium desktop application running on your own computer, over a loopback connection (127.0.0.1). There are no servers, no analytics, and no tracking.

What the Extension does

The Extension provides four save mechanisms:

A floating "Save to Reverium / Quick Save" chip on Vimeo, YouTube, Instagram, Pinterest.
A toolbar popup with the same split-button.
Right-click context menu entries.
Keyboard shortcuts (⌥⇧S and ⌥⇧Q).

When you trigger a save, the Extension sends the URL (plus optional title and video timestamp) to the Reverium desktop app over a local HTTP request to 127.0.0.1 on ports 17823–17833.

If the Reverium app is not running, the Extension opens a custom URL scheme reverium://save?... which macOS uses to launch the app. The launched app receives the same save payload and processes it.

Data we collect

None. The Extension does not collect, transmit, or share any browsing data, analytics, or telemetry.

Data processed locally only

Item	When	Where it goes
URL of active tab	You save a page	Local Reverium (127.0.0.1)
Page title	You save a page	Local Reverium (127.0.0.1)
Video timestamp	You save Vimeo/YouTube/Instagram video	Local Reverium (127.0.0.1)
Settings	You change preferences	`chrome.storage.local`

Permissions explained

activeTab — read the URL/title of the page you're on, only when you save.
contextMenus — add right-click "Save to Reverium" entries.
storage — remember your settings and discovered port.
notifications — show "Saved" / "Failed" desktop notifications.
commands — register ⌥⇧S / ⌥⇧Q shortcuts.
host_permissions: 127.0.0.1:17823-17833 — talk to the Reverium app on your machine.
Content scripts on Vimeo/YouTube/Instagram/Pinterest — inject the save chip near the player. We read only <video>.currentTime and og:title, only when you click Save.

Third parties

None. The only network target is 127.0.0.1.

Changes

Updates to this policy will bump the date above. The text is also maintained in the extension's GitHub repo.

Contact

Questions: hi@reverium.app
Issues: github.com/iffuno/reverium/issues