This review covers only browsers that stay free permanently, not those with 3-, 7-, or 15-day trials. The goal isn’t to list every short-term demo, but to highlight genuinely usable, permanently free antidetect browsers that you can keep in your toolkit without worrying about sudden paywalls.
This short guide explains whether free antidetect browsers are useful in 2025, compares five popular projects (1Browser, ixBrowser, bitbrowser, Undetectable.io, Dolphin{anty}), and gives practical tips on proxies, tests, and safe usage.
You’ll get a quick history, hands-on facts, plus FYI and Pro tips to avoid common mistakes. We also have a detailed review paid antidetect browsers, if you’d like to explore those options, follow the link to our full comparison guide.
Always-Free Antidetect Browsers (2025)
Free tiers are usually restricted by number of profiles or launch counts, not by time. That’s why these five qualify as always-free, not free trials.
| Browser | Free Plan Includes | Built-in Proxy |
|---|---|---|
| 1Browser | Limited free profiles (10), low speed | ✅ Yes (limited countries) |
| ixBrowser | 10 profiles, daily launch cap | ✅ Yes |
| BitBrowser | 10 profiles, core features only | ❌ No |
| Undetectable.io | Always-free desktop app | ❌ No |
| Dolphin{anty} | Starter free tier, limited profiles | ✅ Yes |
Are VPNs or Proxies Not Enough?
Yes. They’re helpful, but not enough by themselves.
A VPN or proxy hides or changes your IP and encrypts traffic; however, modern websites correlate many signals, browser fingerprint (Canvas, WebGL, fonts), timezone, language, installed plugins, media devices, and WebRTC leaks. So while a VPN addresses the network layer, it won’t, alone, stop fingerprinting that’s rooted in your browser environment.
More bluntly:
- VPN = network anonymity;
- Antidetect/browser controls = environment anonymity.
Use both if your goal spans both layers. Recent reporting and vendor docs confirm this separation between network and browser fingerprint protections.
FYI: A VPN can make you look like “many users from the same IP”—which increases suspicion on some platforms. Proxies matter. But without addressing the browser fingerprint, you remain uniquely identifiable.
Why Do People Use Antidetects?
Because they need isolated browser profiles or unified anonymity for multiple accounts, automation, or ad/affiliate work.
Antidetect tools let users create many separate “profiles”. Each with its own fingerprint, cookies, localStorage, fonts, canvas noise settings, timezone, and often built-in proxy handling to reduce correlation between accounts or sessions.
In plain terms: if you run ten accounts for marketing, using the same raw browser + same IP will get them linked quickly. Antidetects aim to mimic different devices so accounts look unrelated. Note: this use can conflict with platform terms and carries risk of bans.
Pro tip: Ask yourself. Is your goal privacy or policy-circumventing? The former is benign (and supported by privacy browsers). The latter is risky and often against platform terms.
The Evolution of Antidetect Browsers
Short answer: antidetects evolved from simple user agents to full profile emulation.
Early attempts (years ago) were limited to changing the User-Agent string or a few headers. Today’s antidetect browsers emulate hundreds of signals; many started as toolkits for affiliate marketers and automation specialists and then matured into user-facing products that bundle proxy management, fingerprint templates, and cloud profiles.
Tor remains the hardest to fingerprint in many scenarios but it’s slow and not practical for some workflows. (Good for anonymity; bad for normal UX.)
Over time two trends shaped the field: first, websites shifted to multi-signal detection (so single tweaks stopped working); second, privacy projects (like Tor and, recently, Mullvad Browser) re-prioritized fingerprint unification i.e., making many users look the same rather than uniquely different. The result: we now have two families of tools privacy-centric browsers that favor uniformity, and antidetect platforms that favor controlled variation for multi-accounting.
Best Free Antidetect Browsers in 2025 — short verdicts
Below are the five projects you asked to compare: 1Browser, ixBrowser, bitbrowser, Undetectable.io, Dolphin{anty}. Each entry gives a short practical takeaway and an up-to-date pointer.
1Browser
Short answer: generous free-tier profiles and built-in proxy features make it attractive for quick testing.
1Browser advertises multiple free profiles, built-in proxy and VPN-like functions, and simple fingerprint masking. For someone who wants a low-friction start, it’s easy — but treat the “mask” claims with scepticism and always test fingerprints on profiling sites.
Key Features:
- 10 free profiles with full isolation
- Built-in free VPN (5 regions) and 5 free proxies
- Cloud sync across devices (AWS-encrypted cookies/history)
- No-logs mode and third-party cookie blocking
- Cross-platform: Windows, macOS, Linux (Intel & ARM)
Best for:
Beginners who want an all-in-one free setup — easy multi-accounting, basic anonymity, and no need to rent external proxies.
ixBrowser
ixBrowser claims free unlimited profiles and a set of daily quotas for launches; the product emphasizes Canvas/WebGL masking and proxy integration. It’s a pragmatic option when you want low cost and decent controls. Still: read the quotas and test the resulting fingerprint consistency.
Key Features:
- “Forever-free” profile system with multi-account and team roles
- Fingerprint protection tested on 60+ checks
- Customizable fingerprints, cloud profile storage
- Cookie import/export and batch operations
- Tiered plans (Free / Pro / Business / Enterprise) with profile and launch limits
Best for: Budget-minded users, SMM specialists, and small teams needing low-cost cloud access, mass operations, and clean, consistent fingerprints.
BitBrowser
BitBrowser positions itself at account managers and advertisers; ongoing updates show a product that focuses on usability for ads and commerce. If you’re doing e-commerce testing or multiple shop accounts, BitBrowser’s integrations may help. Watch for the free-tier limits and proxy recommendations.
Key Features:
- 10 free profiles with 30+ adjustable fingerprint parameters
- RPA support, local API, and script automation tools
- Built-in Script Market and proxy auto-selector
- Team sharing and extension support
- Flagship feature — BitCloudPhone: virtual Android emulator for account matrices
- Works on Windows and macOS
Best for:
E-commerce or social-media teams that need deep automation, Android emulation, and a full tech stack (API + RPA + scripts).
Undetectable.io
Undetectable markets itself as a tool that alters many system-level signals (fonts, language, fingerprinting vectors) and explicitly targets affiliate/traffic work. Several reviews highlight it as a capable product but remind users to test in their environment. Use the free download to validate against your target sites.
Key Features:
- Multi-account support with deep fingerprint substitution (User-Agent, OS, WebGPU, WebRTC, geo, etc.)
- Built-in Proxy Manager and checker
- Mass profile creation and “Cookies Robot” for auto-warming
- Synchronizer and CDP API (Puppeteer / Playwright / Selenium)
- Runs on Windows 10+ and macOS 12+
Best for: Professional users needing powerful fingerprint control, large-scale profile management, and direct automation framework integration.
Dolphin{anty}
Dolphin{anty} (often called Dolphin Anty) targets affiliate marketing and traffic arbitrage. It’s a mature competitor with automation, proxy tools, and profile templates. Good for heavier workflows; free trials or starter plans exist, but real scaling usually needs paid plans.
Key Features:
- Action synchronizer for repeating steps across profiles
- Script builder for automation workflows
- Cloud sync for profiles, cookies, and extensions (in paid tiers)
- Advanced API automation and fast profile handling
- Powerful teamwork tools (bookmarks, tags, statuses)
- Supports Windows, macOS, and Linux
Best for: Affiliate teams and marketers who need reliable automation, coordinated account management, and stability under heavy social or sales workloads.
How To Use An Antidetect Browser?
Direct answer: install the browser, use a dedicated profile per task, pair with proxies, and test the fingerprint, don’t guess.
Then: choose a proxy per profile (residential or high-quality datacenter depending on need), keep timezone/language consistent with IP, avoid unique fonts/extensions, and validate the outcome on profiling sites.
A step-by-step practical checklist:
- Define your goal: privacy or multi-accounting? (Different approaches.)
- Create one profile per identity/task, don’t reuse profiles for unrelated tasks.
- Assign a matching proxy (region, ISP class) to each profile.
- Keep system characteristics stable (resolution, timezone, language).
- Test on profiling pages: check WebRTC, DNS leaks, Canvas, WebGL, timezone. Sites like EFF’s Cover Your Tracks are invaluable.
- Keep a log of what works; if a platform blocks, compare fingerprints and proxies to find the signal that triggered the block.
How important are proxies?
Short answer: extremely important. Proxies are the network layer of your anonymity stack. They provide the IP/ASN/geo context that must match the browser profile. If your browser reports “Estonia timezone, browser language en-US, fonts X” but your IP resolves to a hosting provider in a different country, that mismatch is a red flag.
FYI: Even the best antidetect browser cannot hide a mismatched IP/ASN or an open WebRTC leak. Proxies are not optional if you expect to avoid correlation.
Conclusion:
There’s no perfect, fully free antidetect solution. Each approach is a compromise, pick the one closest to your real needs. Tor and Mullvad Browser remain the strongest at pure privacy/unification; antidetect browsers like the five reviewed here are built for multi-account workflows and offer free tiers for testing but practical use often moves to paid plans.
Key takeaways:
- Test everything before important tasks profile, proxy, WebRTC, DNS.
- Tor/Mullvad = best for untraceable unification (but user experience tradeoffs).
- Antidetect platforms are for controlled variability and multi-account management they’re not the same as privacy browsers.
Pro tip: Keep a small lab: one clean VM with Tor/Mullvad for privacy tasks; one antidetect instance with tested proxies for multi-accounting. Separate them physically (VMs, different machines) so leaks don’t cross-contaminate.
Frequently Asked Questions
Is it worth using a free antidetect browser?
Free antidetect browsers are fine for learning or quick testing, but they’re rarely stable or secure enough for serious multi-account work. If you manage business profiles, ad campaigns, or e-commerce accounts, consider switching to a professional tool like Multilogin, it offers reliable profile isolation, automation options, and consistent fingerprint control.
How can I check if my setup leaks?
Test on profiling sites (e.g., EFF Cover Your Tracks). Check WebRTC, DNS, timezone, fonts, and canvas outputs. Validate over time small changes can create new leaks.
How do antidetect platforms differ from hardened browsers like Brave/Firefox?
Antidetects emulate many environment parameters for separate profiles and are aimed at multi-account workflows. Hardened Brave or Firefox reduce tracking but aren’t designed for multi-profile emulation.
What is the best free antidetect browser?
If you want something permanently free, 1Browser is the best all-around choice. It offers up to 10 free isolated profiles, built-in VPN and proxies, and basic fingerprint masking without any time limits. For stronger anonymity, Mullvad Browser is also excellent, though it’s focused on privacy unification rather than multi-accounting.
Is DuckDuckGo an anti-detect browser?
No. The DuckDuckGo Browser focuses on privacy, blocking trackers, enforcing HTTPS, and preventing ad profiling, but it’s not an antidetect browser. It doesn’t emulate fingerprints or create isolated profiles like tools such as 1Browser, Dolphin Anty, or Undetectable.io.
Which is the lightest browser?
Among privacy browsers, Mullvad Browser and Brave are quite lightweight because they’re based on optimized builds of Firefox and Chromium. From the antidetect category, ixBrowser is the most lightweight option, fast, minimal, and cloud-based, suitable even for low-end PCs.
What is the most discreet browser?
The most discreet browser overall is Tor Browser, designed specifically for anonymity and fingerprint unification. If you want discretion without Tor’s speed trade-offs, Mullvad Browser is the next best thing, it blends users into a large shared fingerprint pool and doesn’t track or log anything locally.
What is the most secure free browser?
For strict security and anonymity, Tor Browser and Mullvad Browser remain unmatched. They block fingerprinting, tracking, and most forms of profiling out of the box — no need for configuration. If you need a balance between privacy and usability, Brave is a strong, secure alternative that works smoothly for everyday browsing.
What is the best browser to avoid censorship?
Tor Browser is the most effective for bypassing censorship because it routes traffic through a distributed network of volunteer relays, hiding both your IP and your destination. If Tor is blocked, pairing Mullvad Browser with a VPN or bridge proxy provides another reliable workaround.
Which browser has the best free VPN?
Opera Browser includes a built-in, unlimited, and free VPN — although it’s more of a proxy than a true VPN. 1Browser also provides an integrated VPN for five regions in its free plan, useful for basic IP masking. For genuine encrypted privacy, pairing any browser with a stand-alone VPN like Mullvad or ProtonVPN Free gives stronger protection.
Do I need a VPN with an antidetect browser?
A VPN helps network anonymity but doesn’t hide fingerprint vectors. Use a proxy/VPN to match IP context to the profile both layers matter.
