Privacy Policy for Wallet Highlighter
Last updated: July 30, 2026
Wallet Highlighter runs entirely on your device. It has no backend, makes no network requests, and sends nothing anywhere.
What is stored
Two things, both in chrome.storage.local on your own computer:
- Public wallet addresses, either pasted in by you or observed from the wallet providers a supported site exposes to that page.
- Sites you enabled by hand, so the extension knows where to run.
That is the entire dataset.
What is never accessed
- Private keys and seed phrases. The extension has no code path that reads, requests or stores either.
- Balances, transactions, portfolio value or any account activity.
- Browsing history, form contents, credentials or cookies.
The extension never calls connect() or eth_requestAccounts, so it can never initiate a wallet prompt or a transaction. It only observes accounts a site has already been granted. It also never modifies the wallet provider itself.
What leaves your device
Nothing. There are no servers, no analytics, no telemetry, no crash reporting, no third-party services and no advertising. The addresses are never sold, shared or transmitted.
Page text is read in memory to find matching addresses and paint them. The result is discarded when the tab closes and is never stored or sent.
Permissions and why each one exists
storage
Keeps your list of public addresses on your device between sessions. Nothing is transmitted.
scripting
Activates the highlighter on a site you enabled yourself, after you granted permission for that site.
tabs
Reads the active tab's hostname so the popup can show whether the extension is active there, and reloads the tab after you enable it. No browsing history is read, stored or transmitted.
Host access to the bundled site list
The extension can only highlight addresses on a page if it can read that page’s text.
*://*/* (optional)
Never granted at install. It is requested for one specific site at a time, only when you click "Enable here" for that site.
Deleting your data
Remove individual addresses with the × in the popup, or uninstall the extension and Chrome deletes its local storage entirely. There is nothing held anywhere else to delete.