Free tools
Browser fingerprint and privacy tools
Small, focused tools that show you what your browser gives away. Every one of them runs in your browser, costs nothing, and needs no account.
- Runs in your browser
- Nothing is uploaded
- No signup
Browser Fingerprint Checker
See every signal your browser hands to websites
Run a full fingerprint scan and see which signals you expose — and which of them contradict each other. Contradictions, not rarity, are what get accounts flagged.
Run the checkWebRTC Leak Test
Check if WebRTC exposes your real IP
WebRTC can hand over your local and public IP addresses even while a proxy is connected. This test shows exactly which addresses your browser would reveal.
Run the checkTimezone Leak Test
Does your clock match the country of your IP?
A US exit IP paired with a European clock is one of the fastest ways to look wrong. Read the timezone, offset and daylight-saving profile your browser reports, then check whether the zone name and the clock behind it could both be telling the truth.
Run the checkCanvas Fingerprint Test
See the canvas hash sites use to recognize you
Canvas output differs subtly between machines, which makes it a stable identifier. See your hash, whether it stays the same across reloads, and whether it looks native or altered.
Run the checkWebGL Report
Read the GPU vendor, renderer and limits you leak
WebGL exposes your GPU vendor, renderer string, extensions and dozens of driver limits. See the full report and whether those values fit the platform you claim to be on.
Run the checkBot Detection Test
See which automation signals your browser exposes
Run the checks a bot filter runs: the webdriver flag, driver globals, headless tokens, the plugin surface and whether the fingerprinting APIs have been wrapped. Every finding names the software it belongs to.
Run the checkAudio Fingerprint Test
See the AudioContext value your machine produces
Render a fixed waveform through a compressor twice and read the value it produces. The second render is what shows whether anything is adding noise to hide the first.
Run the checkFont Fingerprint Test
See which fonts you expose — and which OS they belong to
Probe for the families installed on this machine, then check whether that set belongs to the operating system your browser claims. Font lists cannot be renamed the way a user agent can.
Run the checkProxy Checker
Clean up a proxy list before you import it
Parse, normalise, validate and dedupe a proxy list between every common format, entirely in your browser — then test the entries you choose against our checker for liveness, latency and exit IP.
Run the checkCookie Converter
Convert cookies between cookies.txt, JSON and a header
Paste a cookie export in any of the three common shapes and get the other two back. The format is detected for you, and nothing is uploaded, stored or logged.
Run the checkTOTP Code Generator
Turn a 2FA secret into a live six-digit code
Paste a base32 secret or an otpauth:// URI and get the current RFC 6238 code with its countdown, so you can confirm a key works. Runs locally, stores nothing.
Run the checkUser Agent Parser
Decode a user agent and check it against its Client Hints
Parse any user agent into browser, engine, OS and device, generate the Client Hints that should accompany it, and see where a supplied hint set contradicts the string.
Run the checkIP Address Lookup
Is this address residential, or a datacenter?
See your public IP, where the edge places it and which network owns it — then whether that network is a home connection or a hosting range, and whether your browser's clock and language agree with the address. Look up any proxy exit the same way.
Run the checkHTTP Headers Test
See the headers your browser sends, and whether they agree with JavaScript
Read the exact request headers this browser sent to our server — user agent, languages, encodings, Client Hints, fetch metadata — and check each against what the same browser tells JavaScript. Proxy headers are called out on their own.
Run the checkWebGPU Report
Read the adapter, features and limits WebGPU exposes
WebGPU hands a page a second, independent description of your GPU: vendor, architecture, feature set and dozens of limits. See the full report and whether it names the same hardware WebGL does.
Run the checkUser Agent Generator
Current user agents with Client Hints that agree with them
Generate realistic user agents for Chrome, Edge, Firefox and Safari on Windows, macOS, Linux, Android and iOS — each paired with the full Client Hints set a real build sends, and checked for contradictions before it is handed to you.
Run the checkProxy Timezone Finder
The time zone, language and locale to set for a proxy country
Pick the country your proxy exits in and get the IANA time zone, current UTC offset, language tags and Accept-Language header a machine there would carry — plus a check of whether this browser already matches.
Run the check
Why these exist
Built by people who do this daily
We make a browser with isolated profiles and per-profile fingerprint protection. These are the checks our own team runs when a profile starts behaving oddly.
Nothing to install
Each tool runs on the page you're already on. No extension, no download, no email address.
Honest results
We report what your browser exposes and whether those signals agree with each other. We don't rank you against a database we don't have.
The checks are free. The fix is the browser.
Reading your own signals is the easy part. Sendwin gives every account its own profile, fingerprint settings and proxy — Pro from $19/mo on Windows, macOS and Linux, with a 7-day money-back guarantee.
7-day money-back guarantee on your first card purchase · cancel anytime — your profiles stay on your machine