Windows · Web Browsers
Tor Browser for Windows
Firefox-based browser that routes traffic through the Tor anonymity network to hide your IP address and resist tracking and fingerprinting.
Updated August 9, 2026 · Reviewed by SoftNexi Editorial Team, Software research and documentation
Overview
Tor Browser is a hardened fork of Firefox (Gecko engine) maintained by the nonprofit Tor Project, preconfigured to route all traffic through the Tor network — a system of volunteer-run relays that hides your IP address from the sites you visit.
Beyond IP anonymization, Tor Browser is engineered specifically to resist browser fingerprinting: it standardizes window size, disables many APIs sites use to identify individual devices, and ships with the NoScript and HTTPS-Everywhere-style protections built in.
The tradeoff for this anonymity is speed and convenience: pages load slower because traffic bounces through multiple relays, some sites block Tor exit-node traffic outright, and most third-party extensions are deliberately unsupported because they can undermine anonymity.
Tor Browser suits people with specific privacy or censorship-circumvention needs — journalists, researchers, users in restrictive regions — rather than everyday browsing, where a privacy-respecting mainstream browser is usually a better fit for speed and site compatibility.
Key features
- Routes all traffic through the volunteer-run Tor relay network to hide your IP address
- Built on Firefox's Gecko engine with anonymity-focused hardening
- Standardized fingerprint resistance across installs (uniform window size, disabled tracking-friendly APIs)
- Built-in NoScript-style script blocking, adjustable via a security-level slider
- Bridge and pluggable-transport support to reach Tor from networks that block it
- New Identity and New Circuit options to rotate your Tor exit node mid-session
System requirements
- Operating system
- Windows 11 and Windows 10 (64-bit)
- Architecture
- x64 build
- Network
- Internet connection; some regions require configuring a bridge to reach the Tor network
How to install Tor Browser
1. Download from the Tor Project
Go to torproject.org/download and choose the Windows installer.
2. Verify the signature (recommended)
Follow the Tor Project's documented steps to verify the download's cryptographic signature before running it.
3. Run the installer
Choose an install location and launch Tor Browser; it will connect to the Tor network on first run.
4. Configure bridges if needed
If Tor is blocked on your network, use the built-in Connection settings to configure a bridge before connecting.
How to use it
1. Keep the default window size
Avoid maximizing or resizing the window, since a unique window size can help fingerprint you across sites.
2. Adjust the security level
Use the shield icon to raise the security level to Safer or Safest on sites where you don't need full JavaScript functionality.
3. Use New Identity between sessions
Click New Identity to clear session data and get a new Tor circuit when switching between unrelated browsing tasks.
4. Avoid logging into personal accounts
Signing into accounts tied to your real identity while using Tor undermines the anonymity the browser provides.
Safety and privacy
- Download only from torproject.org, ideally verifying the signature as the Tor Project documents, since Tor Browser is a common impersonation target.
- The browser is open source and the Tor network's design has been extensively studied by security researchers.
- Bundled software
- The official installer does not bundle third-party software.
- Privacy
- Tor Browser is built specifically to minimize what sites and network observers can learn about you, but it does not make you anonymous automatically — logging into personal accounts, resizing the window, or installing extensions can all undermine the protections it provides.
Known risks
- Exit nodes can see unencrypted traffic leaving the network, so always prefer HTTPS sites.
- Downloading files and opening them outside Tor Browser (or while online) can deanonymize you; the Tor Project publishes specific guidance on this.
- Some websites and services block or challenge traffic from known Tor exit nodes.
What's new
Current stable channel
Tor Browser tracks Firefox ESR releases with Tor-specific patches. Check torproject.org/download for the current version and release notes.
Pros and cons
Pros
- Strong, well-studied IP anonymization via the Tor network
- Serious fingerprint-resistance engineering, not just marketing
- Free, open source, and maintained by a nonprofit with a clear privacy mission
- Useful for circumventing network-level censorship in restrictive regions
Cons
- Noticeably slower page loads than a standard browser
- Many sites block or heavily challenge Tor exit-node traffic
- Most browser extensions are unsupported by design
- Effective anonymity requires following usage guidance carefully; misuse reduces the protection significantly
Verdict
Tor Browser is the right tool for people with genuine anonymity or censorship-circumvention needs, and it's free and well-maintained. For everyday browsing where speed and site compatibility matter more than IP anonymization, a privacy-respecting mainstream browser is a better fit.
Frequently asked questions
Is Tor Browser free?
Yes, Tor Browser is free and open source, maintained by the nonprofit Tor Project.
Is Tor Browser illegal?
No, using Tor Browser is legal in most countries; it's a privacy and anonymity tool used by journalists, researchers, and ordinary privacy-conscious users, though some regions restrict or monitor Tor usage.
Does Tor Browser make me completely anonymous?
It significantly reduces what sites and network observers can learn about you, but full anonymity also depends on your behavior, such as not logging into personal accounts while using it.
Why is Tor Browser slow?
Traffic is routed through multiple volunteer-run relays worldwide for anonymity, which adds latency compared to a direct connection.