Privacy AV HELPER
**Last updated: 2026-05-07**
The **av.by helper** browser extension does not collect, store, sell, or transmit any personal data.
## What the extension does
av.by helper runs only on **av.by** and its subdomains (cars.av.by, parts.av.by, moto.av.by, truck.av.by, bus.av.by, salon.av.by, koleso.av.by, spec.av.by, boat.av.by). It reads the public content of those pages and the public API of av.by (web-api.av.by) in order to:
- Display alternate-currency prices (USD / RUB / EUR) next to or instead of Belarusian rubles
- Show analytical information about the listing the user is viewing — average price, price history, listing age, dealer rating
- Provide UI features such as a per-listing "hide" button
## What we store
The extension uses the standard Chrome storage APIs to remember the user's own preferences:
- Selected currency, display mode, theme preference, master on/off toggle, and option toggles — saved with `chrome.storage.sync` so they follow the user across their Chrome browsers (managed by the user's own Google account)
- A list of av.by listing IDs the user has manually hidden, and a snapshot of the latest BYN→USD exchange rate read from av.by — saved with `chrome.storage.local` on the user's device
None of the stored data is personally identifying.
## What we do NOT do
- We do not contact any third-party server. All requests go to av.by only.
- We do not collect personally identifiable information.
- We do not sell, share, or transfer any user data.
- We do not use any analytics, advertising, or tracking SDKs.
- We do not execute any remote code (no `eval()`, no externally loaded JavaScript or WebAssembly). All extension code is bundled inside the extension package.
- We do not modify or interfere with av.by's data — the extension is read-only with respect to the site.
## Permissions used
- **storage** — to remember user preferences and the list of manually hidden listings
- **host_permissions: `*://*.av.by/*`** — to run on av.by pages and read their content for the features listed above
## Children
The extension is not directed at children under 13 and does not knowingly collect any data from them.
## Changes to this policy
If this policy changes, the updated version will be published at the same URL with a new "Last updated" date.
## Contact
Questions or concerns about this policy? Contact the developer through the support email listed on the Chrome Web Store listing.