Expert settings let you dive deep into how your browser profiles behave – things like screen resolution, media devices, graphics data, and more. These settings affect your browser fingerprint and can help you blend in better or customize your profile exactly how you want.

Heads up: we don’t recommend changing these settings unless you really know what you’re doing. Our system already generates safe, optimized defaults to keep your profiles stealthy and working smoothly.

If you’re ready to take full control, flip the “Advanced mode” toggle in your profile and explore these expert options carefully. Below, you’ll find an easy guide to what each setting does and how to use it wisely.

Screen resolution

Analyzing the screen resolution is a common method for browser fingerprinting. These tips will help you avoid red flags:

• Don't use resolutions larger than your native one: websites might check for differences between the declared resolution and the available screen area
• Be consistent in a team: keep profile resolutions within the smallest screen used in your team (if your device is 4K and a colleague has Full HD, set the resolution to 1920 × 1080 or smaller)
• Don't minimize the window: when Multilogin launches a profile, it's maximized according to the resolution in profile settings; it's best not to minimize the profile, since most users have their browsers maximized

Media devices

WebRTC is a browser plugin that enables audio and video communication on a web page. To make this happen, it taps into your media devices like microphones, cameras, and headphones. But this process can get risky – keep reading to learn why!

Device enumeration

Websites can use WebRTC to check out all your devices, making a list of what you've got. While just this list might not pinpoint you specifically, it can still contribute to creating your digital portrait.

In Multilogin, you can customize the number of different devices within these limits:

• 📷 Video inputs (number of web cameras): 0–1
• 🎤 Audio inputs (number of microphones): 0–4
• 🔊 Audio outputs (number of speakers or headphones): 0–4

ID tracking

Although browsers protect the full model names of your media devices, websites can still track their unique IDs. In Multilogin, they are masked by default for every device.

WebGL + WebGPU metadata

WebGL and WebGPU metadata is like your browser profile's artistic signature. It reveals details about how your device creates graphics on the web, such as the brand of the graphics tool and its specific model. Websites use this signature to recognize and remember you online.

WebGL graphics

WebGL is a JavaScript technology that lets websites create 3D graphics on a webpage. At the same time, websites can use it to identify you in two ways:

• WebGL report: they inspect the entire WebGL browser report table, sometimes turning it into a hash for faster analysis
• WebGL image: they request for a hidden 3D image to be drawn and hashed, as the final result depends on your device's hardware and its calculations

Noise

When a website requests a graphics read-out, our masking algorithm steps in. It adds a random but consistent noise, making your fingerprint appear 100% unique under statistical analysis.

Key thing to remember: even though the noise stays the same, the read-outs will still differ if you launch the same profile on different devices.

Check out the example below to see how the hash changes when the same profile runs on two different devices.

 

 

Canvas graphics

The Canvas API is designed for drawing 2D graphics and animations on a webpage via JavaScript and HTML. But just like WebGL, Canvas can add extra uniqueness to your browser fingerprint. According to a study by Princeton University, over 5% of websites use it for fingerprinting.

Here's the process: websites ask your browser to draw a hidden canvas image. This image appears slightly different on various devices, but remains the same for identical setups. Then the image gets transformed into a hash, serving as additional entropy in identification.

Noise

When a website requests a graphics read-out, our masking algorithm jumps in, adding random yet consistent noise. This makes your fingerprint look 100% unique if analyzed statistically.

Important to know: even though the noise pattern stays the same, the read-out will still change if you launch the same profile on different devices.

Check out the example below to see how the hash differs between two devices.

 

 

AudioContext

AudioContext fingerprint is a hashed derivative of your device's audio setup.

Here's the process: websites ask your browser to simulate a sinusoidal function, mimicking how it plays audio files according to your settings and hardware. This sinusoid is then turned into a hash, which becomes an extra detail in your browser fingerprint.

Noise

Multilogin tweaks the audio stack at the browser level, adding persistent noise to make your fingerprint appear 100% unique under statistical analysis.

Key takeaway: even though the noise pattern remains the same, the read-outs will still vary if you launch the same profile on different devices.

Check out the example below to see how the hash changes between two devices.

 

 

Navigator

The Platform parameter refers to the platform a browser is compiled for. Some platform value examples include Win64, Mac Intel, and Linux 686.

HardwareConcurrency 

OSCPU

The OSCPU parameter refers to the version of your operating system. It can be found in Firefox-based browsers (Stealthfox in Multilogin). Some examples include:

• Windows NT 10.0; Win64; x64
• Intel Mac OS X 10.14
• Linux x86_64

Port scan protection

When a computer application is active, it opens a port – an endpoint for communication. It can be any number from 0 to 65535. For example, TeamViewer opens ports 80, 443, and 5938.

Certain fingerprint checkers can perform Nmap scanning to check for open ports. Just a heads-up – regular websites don't usually use this due to legal constraints.

Font data

Font list enumeration