> For the complete documentation index, see [llms.txt](https://docs.incogniton.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.incogniton.com/browser-and-browser-profiles/managing-browser-profiles/browser-and-navigator.md).

# Browser & Navigator

These settings control how websites identify your browser and device. When modifying them, focus on consistency. Your browser version, operating system, screen characteristics, timezone, fonts, and media devices should describe the same device and environment.

### User agent

The user agent identifies the browser and version reported to websites.

| Option                              | Description                                                                             |
| ----------------------------------- | --------------------------------------------------------------------------------------- |
| Always use latest Chrome user agent | Reports the newest Chrome version regardless of the browser engine the profile runs on. |
| Match browser user agent            | Reports the version that matches the underlying browser engine.                         |
| Use specific version                | Lets you specify an exact Chrome version.                                               |

Leave this on the default unless you aim to match an existing account's history, an older browser for testing, or a fingerprint that should stay fixed over time.

### Timezone

Timezone controls the timezone reported by the browser profile.

| Setting                   | Description                                                         |
| ------------------------- | ------------------------------------------------------------------- |
| Fill timezone based on IP | Automatically sets the timezone based on the profile's IP location. |
| Manual timezone           | Lets you specify a timezone manually.                               |

If you specify a timezone manually, we recommend matching it to the profile's location and IP address. A mismatch here is an easy signal for sites to flag.

### Navigator

Navigator settings control browser attributes such as platform, screen resolution, width, and height.

| Setting    | Description                                            |
| ---------- | ------------------------------------------------------ |
| Platform   | Controls the operating system reported by the browser. |
| Resolution | Controls the screen resolution reported to websites.   |
| Width      | Controls the reported screen width.                    |
| Height     | Controls the reported screen height.                   |

These values should align with each other and with the operating system configured for the profile. For example, a profile configured as macOS should report platform and screen characteristics typical of a Mac device, not a mix of values associated with different operating systems.

### Media devices

Media device settings control how many cameras, microphones, and speakers the profile reports to websites.

| Setting            | Description                                                                   |
| ------------------ | ----------------------------------------------------------------------------- |
| Mask media devices | Reports generated media device information instead of your real hardware.     |
| Video input count  | Controls the number of cameras reported to websites.                          |
| Audio input count  | Controls the number of microphones reported to websites.                      |
| Audio output count | Controls the number of speakers or audio output devices reported to websites. |

### Fonts

Fonts are commonly used as part of browser fingerprinting.

| Setting                  | Description                                                         |
| ------------------------ | ------------------------------------------------------------------- |
| Enable font list masking | Prevents websites from seeing your real installed fonts.            |
| Enable Unicode           | Helps protect against Unicode-based font fingerprinting techniques. |
| Randomize fonts          | Generates a different font set for the profile.                     |

If you randomize fonts, pick a value once and stick with it across sessions. A font list that keeps changing doesn't resemble a real device, it signals that something is being spoofed, giving trackers a unique pattern to identify you by. That's the opposite of what randomization is meant to achieve.