Fantrax Highlighter highlights baseball player names on supported
websites using your Fantrax league data. The extension stores a small set of
settings locally in your browser and makes requests to Fantrax to fetch
league/team/ownership information you ask it to load.
Data the extension stores (local to
your browser)
The extension uses chrome.storage.local to store settings and cached lookup data
so it can work quickly.
Settings you provide
- Fantrax
userSecretId (entered by you in the popup) - Selected
league and team
(league ID/name, your team ID/name) - Preferences such as highlighting
enabled, debug enabled, and cache TTL - A per-league saved selection
map (so you don’t have to re-pick your team each time)
Cached data (generated by the
extension)
- A last refresh
timestamp - Lookup/caching maps used for
highlighting (e.g., name→player IDs, player ID→team ID, team ID→team name)
Important: These items are stored only in your browser unless you
use Chrome’s optional sync features outside this extension. The extension does
not intentionally sync this data to any server controlled by the publisher.
Data the extension does not collect or sell
- The extension does not sell personal data.
- The extension does not collect your general browsing
history. - The extension does not read or store passwords,
payment information, or the full contents of pages beyond what is needed
to highlight player names.
Network requests (Fantrax)
When you click buttons like Load Leagues / Refresh Data, the extension sends requests to Fantrax endpoints to retrieve information required for highlighting, such as:
- your league list
- team rosters / team names
- player ID mappings /
ownership-related lookup data
These requests go directly from your browser to Fantrax (e.g., https://www.fantrax.com/…). The extension does not route these requests through any publisher-controlled server.
How the extension uses page content
On supported websites, the extension scans visible page text to detect player names and applies highlights in the page. This processing happens locally in your browser.
Data retention and control
You can remove stored data at any time by:
- opening Chrome Extension
settings → Fantrax Highlighter → Remove, or - clearing the extension’s site
data / extension storage in Chrome.
Security
- Data is stored locally using
Chrome’s extension storage APIs. - Network requests to Fantrax are
made over HTTPS where available.
Changes to this policy
If this policy changes, the “Last updated” date will be revised. Material changes will be reflected in the Chrome Web Store listing and/or this policy page.