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Privogrid

Posted on Originally published at Medium

Why Chrome Links All Your Accounts Together (and How We Fixed It)

If you've ever tried managing more than a few online accounts from a single PC, you've hit the same wall I did: Chrome treats every account as if it belongs to the same person. Same canvas fingerprint. Same WebGL hash. Same font list. Same WebRTC behavior. Different "Chrome profiles" don't change this — they only partition cookies, not your device identity.

So platforms link your accounts together. Your client's Facebook ad account notices it shares a fingerprint with your personal Facebook. Your 5 Amazon seller accounts look like one device operating 5 stores.

I spent a year building a browser to fix this properly. Here's what I learned.

The Problem Isn't the Browser Profile — It's the Engine

Chrome's "Add profile" feature is for keeping bookmarks and extensions separate. It doesn't rotate your canvas fingerprint, your WebGL vendor string, your audio context fingerprint, or your font enumeration. Websites read all of those directly from the Chromium engine.

Most "privacy browsers" on the market solve this with one of two approaches:

  1. A Chrome extension that patches the APIs. Easy to detect (extensions are enumerable). Easy to break (any Chrome update can shift the attack surface).
  2. A JS runtime patch injected at page load. Better than extensions, but still leaves fingerprint leaks (WebRTC, audio, timing) that mature fingerprint libraries like FingerprintJS Pro can catch.

The right solution is to patch Chromium itself at the C++ level, before any JavaScript runs. That's harder — you have to maintain a Chromium fork, rebuild it on every upstream release, sign the resulting binaries. But it produces fingerprints that are indistinguishable from a real device.

What Privogrid Does Differently

We built Privogrid as a custom Chromium engine in C++. Each browser profile has:

  • Its own canvas, WebGL, audio, font fingerprint (patched at the engine level)
  • Its own proxy (HTTP, HTTPS, or SOCKS5)
  • Its own timezone, language, geolocation
  • Its own cookie jar (never shared with other profiles)
  • Its own storage, cache, extensions, service workers

So when you open 50 profiles for 50 different accounts, each one looks like a completely different device to the websites it visits.

Who This Is For

Privogrid is built for people who manage multiple online accounts as part of their work:

  • Affiliate marketers running campaigns across many platforms
  • Social media agencies managing clients' accounts without cross-contamination
  • E-commerce sellers running multiple stores on Amazon, Shopify, eBay
  • Dropshippers operating in multiple niches
  • Crypto teams keeping wallet activity separated
  • Growth marketers running controlled A/B tests across accounts

If you only manage 1-2 accounts, Chrome is fine. If you manage 10+, you need isolation.

Pricing

We priced it to be the honest option in the market:

  • Solo — $9/month, 20 profiles, 1 seat
  • Pro — $29/month, 75 profiles, 3 seats (most popular)
  • Agency — $79/month, 250 profiles, 10 seats

Yearly billing is half price on every tier. There's a 7-day free trial without a credit card, and a 7-day money-back guarantee on paid plans.

Try It

Privogrid for Windows is available at https://privogrid.com — code-signed installer, no SmartScreen warnings, GDPR compliant (we're an EU company).

Happy to answer questions in the comments.


Privogrid is my product. I built this because the existing options were either too expensive or too shallow. If you've tried the others, I'd love to hear how Privogrid compares for your workflow.

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