Blog
How browsers are recognised, and how to stay in control.
Explainers and step-by-step guides from the team that builds Browz: fingerprints, AI agents in a real browser, proxies, multi-account work and security. Every claim about Browz links to evidence you can check.
Fingerprinting explained Agents and automation Proxies and networking Multi-account workflows Security and privacy Product and releases
Browser profiles for privacy: keep work, personal and research browsing apart
How sites link your work, personal and research browsing, why private windows only go part way, and a step-by-step plan for one browser profile per role.
ReadCanvas fingerprinting explained: why random noise gives a browser away
How a canvas fingerprint is made, why it differs between computers, why blocking or random noise stands out, and how to test your own browser in two minutes.
ReadConnect a cloud AI agent to a browser on your own computer
How a remote MCP server lets a cloud AI agent, such as Claude.ai or an OpenAI agent, drive a browser profile on your own computer, and how to set it up.
ReadEnd-to-end encrypted profile sync: what the server can and cannot read
How end-to-end encrypted browser profile sync works, what a sync server still needs to see, how keys and recovery work, and five questions to ask any provider.
ReadFingerprint consistency: why mismatched values give a browser away
Why detection systems care more about contradictions than rare values, the eight mismatches they check most, and console snippets to check each one yourself.
ReadFive AI agent browser recipes you can run today
Five complete AI agent browser automation examples: Claude Code over MCP, Playwright over CDP, a scheduled headless job, a human hand-off, and two accounts side by side.
ReadHow to choose an anti-detect browser: 10 checks you can run yourself
Ten practical checks for choosing an anti-detect browser, from engine-level fingerprints and headless parity to proxies, sync encryption, teams, agents and refunds.
ReadHow to give an AI agent a browser safely
Give an AI agent its own browser profile, its own limited key, sign-ins it can use but never read, and a person for the login. Step by step with Claude Code.
ReadHow to manage multiple accounts safely, within each site's rules
Run several accounts you are allowed to hold without mixing sessions: check the terms, give each account its own profile and exit, and keep the setup tidy.
ReadHow to test your browser fingerprint, and how to read the results
A step-by-step guide to running a browser fingerprint test, reading every section and consistency check, and comparing two runs to test browser profiles.
ReadHow we benchmark AI agents in a browser: 50 tasks, open harness, raw results
The method behind our AI agent browser benchmark: 50 public web tasks, the same agent twice, scoring by program, the results, and how to rerun it yourself.
ReadHow websites recognise automated and headless browsers
The signals sites use to spot automated and headless browsers: automation flags, headless differences, fingerprint contradictions, TLS, behaviour and IP reputation.
ReadHuman hand-off for AI agents: let a person finish logins, 2FA and CAPTCHAs
Human in the loop for browser agents: the agent pauses, you finish the sign-in, 2FA code or CAPTCHA in the same window, and it carries on. How it works.
ReadIs an anti-detect browser legal? Privacy, site terms and acceptable use
Using an anti-detect browser is legal in most places; what decides it is your use. Privacy law, site terms, legitimate uses and how to check a use before you start.
ReadManaging client accounts as an agency: one browser profile per client
A practical setup for agencies running clients' ad, social and marketplace accounts: a profile per account, a folder per client, no shared passwords, clean offboarding.
ReadMatch a profile's timezone, language and location to its proxy
Why a timezone or language that disagrees with the proxy's location stands out, how to check all five values in a minute, and how to stay matched when the exit moves.
ReadPlaywright in a real browser profile: attach over CDP, not a fresh browser
Run Playwright scripts inside a saved browser profile with its own cookies, fingerprint and proxy: start the profile, then connectOverCDP. Node and Python examples.
ReadPrompt injection and browser agents: limit what a hijacked agent can reach
Prompt injection hides instructions in web pages for an AI agent to follow. Why browser agents raise the stakes, and the controls that cap what a misled agent can do.
ReadQA testing with browser profiles: see your site as each user and region does
Test a website as different users, roles and countries with one saved browser profile per test persona, each with its own exit, timezone and languages.
ReadResidential, datacenter, ISP or mobile proxies: which one a profile needs
Datacenter, residential, ISP and mobile proxies compared: how websites see each, sticky or rotating sessions, and which one suits a long-lived browser profile.
ReadRunning several online storefronts where the platform allows it
How sellers with more than one permitted storefront keep each store's sign-in, staff, market and records apart, with one browser profile and one checked exit per store.
ReadShare account access with a team without sharing passwords
Give colleagues access to the accounts they work on without handing out passwords: share signed-in profiles by role and level, one device at a time, with a log.
ReadTLS fingerprinting (JA3 and JA4) explained for browser users
How sites fingerprint the TLS handshake and HTTP/2 settings before any page loads, what JA3 and JA4 measure, what changes them, and how to check your own browser.
ReadUse your own SSH server as a browser profile's proxy
Turn a server you control into an encrypted exit for a browser profile: how SSH tunnelling works, preparing the server, key sign-in, host-key pinning and checks.
ReadUser agent and client hints: keeping JavaScript and headers in agreement
How the user agent string, Sec-CH-UA headers and getHighEntropyValues fit together, why changing only one of them gives a browser away, and how to check yours.
ReadWebGL and WebGPU fingerprinting: what your graphics card gives away
What WebGL and WebGPU reveal about your graphics card (names, limits, extensions, rendered images), why a fake renderer contradicts real hardware, and how to check.
ReadWebRTC leaks: how a page can find your real IP, and how to check a profile
How WebRTC can reveal the address behind a proxy, how to test a browser profile for a WebRTC or DNS leak in two minutes, and the settings that close both.
ReadWhat is an anti-detect browser? How it works and who it is for
An anti-detect browser runs separate profiles, each with its own consistent fingerprint, proxy, cookies and storage. How it works, who uses it and what to check.
ReadWhat is an MCP browser? Giving Claude, Cursor and other agents a real browser
An MCP browser is a browser an AI agent drives through the Model Context Protocol. What it exposes, local vs remote, and how to set one up in Claude and Cursor.
ReadWhat is browser fingerprinting? How websites recognise your browser
Browser fingerprinting identifies a browser from the details it reveals, without cookies. What goes into a fingerprint, why consistency matters and how to test yours.
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