> ## Documentation Index
> Fetch the complete documentation index at: https://docs.datalyr.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Filters

> Allow sites, block internal traffic, skip pages, and normalize dynamic paths.

Filters trim unwanted data before it reaches your workspace. Filtered events are dropped before billing.

Open **Settings → Filters**.

## Additional websites

Add every separate domain or exact subdomain where this workspace's Web SDK runs. The primary domain and its apex/`www` pair are included automatically. Wildcards such as `*.example.com` include all subdomains.

## Blocked IPs

Add individual IP addresses or CIDR ranges to remove office, agency, QA, or other internal traffic.

```text theme={null}
203.0.113.42
10.0.0.0/24
```

## Blocked pages

Skip page paths that should not be collected:

```text theme={null}
/admin
/staging/*
```

## Masked pages

Collapse dynamic paths into one reportable pattern:

```text theme={null}
/orders/:id
/users/:userId/profile
```

This makes `/orders/abc` and `/orders/xyz` aggregate as `/orders/:id` without blocking the page views.

## Verify changes

Test one included and one excluded request after saving. Filters apply to new events; they do not rewrite historical data.

<Warning>
  A broad hostname, IP range, or wildcard can remove legitimate customer activity. Start narrow and verify each rule.
</Warning>