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Fingerprints

A fingerprint is a unique set of browser properties that websites use to identify visitors. Meshbrow generates realistic, internally consistent fingerprints for each session.

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What Gets Fingerprinted

CategoryProperties
CanvasUnique pixel rendering noise
WebGLVendor, renderer, shader precision
AudioAudioContext sample noise
Navigatorplatform, languages, hardwareConcurrency, deviceMemory
ScreenResolution, colorDepth, pixelRatio
FontsInstalled font list
PluginsChrome PDF, Flash (legacy)
User-AgentBrowser version, OS info

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Consistency

Meshbrow ensures all fingerprint properties are internally consistent:
  • OS match: A Win32 platform gets Windows fonts, Windows UA, DirectX WebGL
  • Hardware match: Low hardwareConcurrency (2) gets lower deviceMemory (4)
  • Geo match: US proxy gets en-US locale and America/* timezone
  • Version match: All Chrome version strings are identical across properties

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Fingerprint Modes

const session = await client.sessions.create({
  fingerprint: 'auto',
});
Generates a completely random, realistic fingerprint. Best for most use cases.

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Custom

const session = await client.sessions.create({
  fingerprint: {
    platform: 'MacIntel',
    locale: 'en-US',
    timezone: 'America/New_York',
    viewport: { width: 1440, height: 900 },
  },
});
Override specific properties. Meshbrow fills in the rest consistently.

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From Profile

const session = await client.sessions.create({
  profileId: 'prof_x9y8z7w6', // Uses profile's fingerprint prefs
});

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Detection Tests

Meshbrow fingerprints pass: