Dollar Bill

Overview

Dollar Bill is a browser extension that converts prices displayed on web pages between currencies you choose. This page explains what data the extension handles and how.

The short version: Dollar Bill does not collect, transmit, or sell any personal data. All your settings stay on your device.

Data We Store

The following information is saved locally on your device using chrome.storage.local:

• Your preferences (enabled/disabled state, theme, number format, time format)
• Configured conversion pairs (e.g. BYN → USD)
• Custom currency definitions and rate overrides
• Domain-currency mappings you set for specific websites
• Site whitelist (if you restrict scanning to specific domains)
• Cached exchange rates from the selected rate source

This data never leaves your device. It is not synced to any cloud service and is not accessible to any website or third party.

Network Requests

The extension fetches exchange rates from public central-bank APIs. These are the only external requests it makes:

• api.nbrb.by — National Bank of the Republic of Belarus
• ecb.europa.eu — European Central Bank
• api.nbp.pl — National Bank of Poland
• bank.gov.ua — National Bank of Ukraine
• cbr.ru — Bank of Russia
• cnb.cz — Czech National Bank
• tcmb.gov.tr — Central Bank of Turkey
• bankofcanada.ca — Bank of Canada
• bcb.gov.br — Central Bank of Brazil
• bankofengland.co.uk — Bank of England

Requests are made periodically (via the Chrome Alarms API) to keep rates up to date. No personal data, browsing history, or page content is sent with these requests. Only standard HTTP headers are included.

What We Do Not Do

• No personal data collection
• No tracking or analytics
• No advertising or ad networks
• No third-party data sharing
• No cookies
• No user accounts or sign-ups

Permissions Explained

<all_urls> content script access is required because the extension needs to scan page text for price patterns on any website you visit. It reads only the visible text on the page to find and convert prices — no form inputs, passwords, or hidden elements are accessed. You can restrict scanning to specific sites via the Site Filtering setting.

storage permission is used to save your preferences locally. alarms permission is used to schedule periodic exchange rate updates.

Changes

If this policy changes, the updated version will be bundled with a new extension release. We encourage you to review this page periodically.

Contact

Questions about this policy can be directed to the extension's Chrome Web Store listing support channel.