# Filters and segments

> Every filter dimension, how filters combine, how a filtered view carries across pages and links.

Section: Analyze. Canonical page: https://mrkr.app/docs/analyze/filters-and-segments. Last updated: 2026-10-03.

Filters narrow every page in the dashboard to a slice of your traffic (one country, one device type, one campaign or a recorded event) without changing what any number means, only which rows go into it.

![The Sources page broken down by referrer, with a filter bar at the top of the dashboard.](https://mrkr.app/docs/sources.webp)

Filters apply to every page at once. Sources is where they most often start.

## The filter dimensions

Sixteen dimensions, grouped in the filter panel:

| Group | Dimensions |
| --- | --- |
| Geography | Country, Region, City |
| Device | Device type, Browser, Operating system |
| Acquisition | Source, Medium, Referrer |
| UTM | utm_source, utm_medium, utm_campaign |
| Behaviour | Entry page, Exit page |
| Client | Language, Timezone |

Any dimension also has a `(none)` option, which matches sessions where that field is genuinely empty (a session with no referrer, for instance) rather than excluding them.

## How filters combine

Values within one dimension are OR'd together: picking United States and Germany under Country shows visitors from either. Different dimensions are AND'd: Country = US **and** Device = mobile narrows to both at once. There's no negation yet: you can select which values to include, not which to exclude.

## Filters carry across pages

Your active filters persist in a cookie, so navigating from Overview to Sources to Funnels keeps the same slice applied everywhere without re-selecting it. As with the range, anything explicit in the URL wins over the cookie: following a link with filter parameters in it always honours the link.

## Sharing a filtered view

Because filters live in the URL, copying the address bar and sending it to a teammate reproduces the exact same filtered, ranged view for anyone signed into the same workspace. This does **not** extend to the public dashboard link covered in [Sharing](https://mrkr.app/docs/analyze/sharing): that surface shows the unfiltered dashboard only, with no way for a recipient to apply or see filters.