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Stop Sval blocking a domain

An allowed domain is never blocked, on any site and at any level.

A list blocks the domain your bank’s site loads its sign-in page from, and you can’t sign in.

  1. Open Settings › Privacy and protection.
  2. Under Allowed domains, select Add domain.
  3. In Domain, type the domain or paste an address.
  4. Select Add.

Sval never blocks requests to that domain or any address under it.

  • Allowing cdn.example.com also allows every address under it, such as img.cdn.example.com.
  • To remove an allowed domain, select the × at the end of its row.
  • Allowed domains sync to your other devices.
  • To stop blocking on one site instead, turn off that site’s protections. See Turn off protections for a site.

© 2026 Ellm Tree, Inc. Sval is not officially associated with Mozilla or its products. Firefox is a trademark of the Mozilla Foundation in the US and other countries.