Browserleaks review: how to test browser profiles effectively

In this Browserleaks review, we will explore what this tool can test, how to use it to check browser profiles, and the abnormal signs to look for when evaluating fingerprints. The article also guides you on how to combine Browserleaks with the antidetect browser Hidemyacc to check profile consistency before putting it into use.

1. What is Browserleaks and what can it check?

Browserleaks is a free web tool that helps analyze information that websites can collect from your browser. Instead of showing just a single summary result, Browserleaks allows you to view each individual metric in detail, from IP addresses and WebRTC to browser fingerprints like Canvas or WebGL.

This is a tool widely used by many when they need to evaluate browser profiles, check information leakage levels, or verify the consistency of a browser fingerprint before operating accounts.

1.1. Quick overview of Browserleaks

Browserleaks operates entirely on the web and does not require software installation. Users just need to access the website, open the corresponding testing modules, and view the results directly on the browser.

The strength of Browserleaks lies in its ability to display each data group in detail. Instead of just giving an overall score, this tool allows you to check every layer of information that a website can see.

Compared to other tools, Browserleaks has a distinct approach:

• CreepJS focuses on evaluating the uniqueness of the fingerprint and gives an aggregated score.
• Cover Your Tracks focuses more on user tracking capabilities.
• Pixelscan provides a comprehensive report on the browser environment.

Meanwhile, Browserleaks allows users to dive deep into each individual index to pinpoint exactly where an anomaly occurs.

Find out more: Pixelscan Review 2026: Browser Fingerprint Checking Tool

1.2. List of metrics checked by Browserleaks

Browserleaks provides many different groups of tools to test the browser environment. Some important metrics include:

• IP Address and WebRTC
• Canvas Fingerprint and WebGL Fingerprint
• User Agent, browser information, and operating system.
• Timezone, language, and screen resolution.
• JavaScript, Cookies, Local Storage, and Do Not Track.
• Geographical location, network information, and DNS Leak.

Thanks to a rich number of modules, Browserleaks can help users fully evaluate how a browser profile is identified on the Internet.

2. How to use Browserleaks to test browser profiles

To ensure that the test results accurately reflect the environment being used, you should prepare the profile before proceeding with the test.

2.1. What to prepare before testing

Before opening Browserleaks, make sure the following basic conditions are met:

• Open the exact browser profile that needs to be checked, which can be an antidetect browser or a regular browser.
• Ensure that the proxy or VPN is connected if you are using one.
• Turn off irrelevant extensions to avoid altering the results.
• Complete the settings for language, timezone, or fingerprint if adjustments are needed.

Prior preparation will help limit situations where test results are skewed due to external factors.

2.2. Basic testing steps

After completing the preparations, you can proceed with the test through the following steps:

• Step 1: Open Browserleaks inside the browser profile that needs to be tested. Be sure to open the exact profile you want to check instead of using the default browser on your computer.
• Step 2: Check important modules one by one. Access modules such as IP Check, WebRTC, Canvas, and User-Agent. These are metrics that usually directly affect profile identification.
• Step 3: Take screenshots or save results to compare between tests. You can take screenshots or save key parameters for easy cross-referencing in future tests.
• Step 4: Compare with the configured setup. Cross-reference the parameters displayed on Browserleaks with the profile configuration. If conflicts appear between the IP, timezone, User Agent, or hardware specifications, they must be adjusted before use.

Taking just a few minutes to check can help mitigate many risks related to information leakage or fingerprint mismatch.

2.3. Priority order when checking

Not all metrics carry the same level of importance. When checking profiles, you should prioritize according to the following order:

• High priority: IP leaks and WebRTC leaks, because these are the two most easily exposed metrics and directly affect accounts.
• Medium priority: Canvas fingerprint and User-Agent, because they relate to long-term identification.
• Lower priority: Timezone, language, and resolution, because they are complementary and carry less risk once the IP is clean.

Although metrics in the low-priority group have less impact than the IP or WebRTC, they still need to be set consistently with the geographical location, device, and other parameters in the profile to avoid creating abnormal signs.

3. Detailed analysis of each tool group

Browserleaks provides many different modules to check the browser fingerprint. Each module reflects a specific data group that websites can use to identify or evaluate the trustworthiness of a profile.

3.1. IP Address and WebRTC

The IP address and WebRTC are the first two modules checked when evaluating a browser profile. These are also metrics highly capable of exposing a user's real information if configured incorrectly.

In Browserleaks, the IP check section not only displays the public IP address but also provides related information such as geographical location, ISP, timezone, request headers, and certain network connection characteristics. Platforms usually evaluate this data together instead of looking at each metric individually.

Besides, WebRTC is a technology that supports real-time communication on browsers. When active, WebRTC can use STUN servers to determine the network address of the device. If not configured properly, the real IP address can still be exposed even when using a proxy or VPN.

A result is considered normal when:

• The displayed IP address matches the proxy or VPN being used.
• The real IP address does not appear in the WebRTC section.
• The geographical location, timezone, and language show no clear conflicts with one another.

Conversely, if Browserleaks displays both the proxy IP and the real IP in the WebRTC section, this is a sign that needs to be resolved before continuing to use the profile.

3.2. Canvas Fingerprint

Canvas Fingerprinting is one of the widespread browser tracking techniques today. Instead of collecting information directly from the user, the website requests the browser to draw a hidden image using the Canvas API and then analyzes the returned result.

This result is influenced by many factors, including the operating system, graphics card, drivers, browser, and the installed font set. Therefore, two different devices will usually generate different identification hashes.

Browserleaks allows you to check and directly display the Canvas fingerprint of the profile. This information is often used to differentiate browsers that share the same IP address or User-Agent.

When evaluating Canvas Fingerprint results, you should note:

• Each profile should have an identification hash that matches its declared environment.
• Abnormal parameter combinations or inconsistencies should not appear.
• If multiple profiles share the same Canvas fingerprint, the risk of accounts being linked will increase.

Canvas is not the only factor determining profile safety, but it is one of the indexes used by many anti-fraud systems.

3.3. WebGL and Audio

In addition to Canvas, Browserleaks provides WebGL and Audio Fingerprint test modules to deeper evaluate the browser environment.

WebGL is a technology supporting graphics processing on browsers. Through WebGL, websites can gather information regarding the device's graphics card, drivers, and image rendering capabilities.

This data is often cross-checked against the User-Agent and the operating system. For instance, if a profile declares a macOS device but the WebGL information shows signs of a Windows environment, this can be seen as a contradiction that requires attention.

Meanwhile, Audio Fingerprinting works by requesting the browser to process an audio signal via the Web Audio API. The returned value will be influenced by the hardware, browser, and operating system.

When testing Audio, users often see statuses like:

• Probably
• Maybe

This is the browser's normal response to various audio formats and is not a sign of configuration error.

Overall, WebGL and Audio are not indexes that need priority processing first. However, they still play a crucial role in evaluating the consistency of the entire profile.

3.4. User-Agent

A User-Agent is a string of information that the browser sends to a website to describe the environment currently being used. This data typically includes the browser name, browser version, operating system, and certain information related to the device.

Many websites use the User-Agent as a fundamental data layer to identify the access environment. However, instead of being evaluated individually, the User-Agent is often cross-checked with other metrics such as WebGL, timezone, language, and IP address.

When checking the User-Agent on Browserleaks, the most important thing is consistency with the entire profile. A reasonable User-Agent needs to match the operating system, browser, and setup configured in the profile.

Some commonly encountered contradictions include:

• The User-Agent declares Windows, but the hardware parameters resemble a macOS environment.
• The User-Agent displays a browser version that does not correspond to the supported features.
• The User-Agent fits a certain region, but the timezone and geographical location belong to a different area.

These anomalies can make the profile look unnatural when evaluated alongside other data layers.

3.5. Timezone and Geolocation

Timezone and Geolocation are two metrics frequently used to verify the legitimacy of the access environment.

The timezone indicates the time zone currently used by the browser. Meanwhile, Geolocation is the position returned via the Geolocation API when the user grants location access to the website.

When evaluating profiles, platforms usually cross-check the timezone against the geographical location of the IP address. If these two data points do not match, the profile can be considered abnormal.

For example, if the IP address is in the US but the timezone shows Asia/Ho_Chi_Minh, this is a contradiction that is easily detected.

Regarding Geolocation, the browser only provides data when the user agrees to grant location access. In cases where permission is granted, the returned position should be compatible with the region of the IP address currently in use.

A result is considered reasonable when:

• The timezone fits the geographical location of the IP.
• The language, region, and timezone do not conflict with one another.
• The Geolocation accurately reflects the area being simulated if the user grants location access.

The crucial part is not where the timezone or geographical location is displayed, but that they must match the other parameters within the same profile.

3.6. Features Detection and Client Hints

Besides common fingerprints, Browserleaks provides tools that help check the browser's feature support capabilities.

Features Detection is a mechanism to determine which features the browser can utilize, including APIs, CSS, JavaScript, and multimedia processing capabilities. Through this, websites can evaluate whether the accessing environment actually matches the declared browser and operating system.

When looking at Features Detection results, the critical point is not that every feature must be supported. In reality, each browser has its own limitations, and missing certain features is completely normal.

Meanwhile, Client Hints is a mechanism allowing the browser to send extra information about the device via request headers. This data can include the platform, system architecture, or browser version. If the browser does not support Client Hints, the website will only receive the basic User-Agent. This is not a configuration error.

For example, Safari currently limits a lot of Client Hints information. This is the default behavior of the browser and is not considered an abnormal sign.

3.7. SSL/TLS and JA3/JA4

In addition to parameters displayed on the browser, Browserleaks provides data related to network connections, such as SSL/TLS, JA3, and JA4.

When the browser establishes an HTTPS connection, a lot of technical information is exchanged during the TLS handshake. From this data, systems can generate a connection fingerprint to serve the identification of the access environment.

JA3 and JA4 are methods of compiling that information into an identification hash. They help evaluate whether the network connection fits the browser and environment that have been declared.

A result is considered normal when:

• TLS 1.3 or TLS 1.2 is utilized.
• Old protocols are no longer enabled.
• JA3 and JA4 match the normal behavior of the browser currently being used.

This is not a group of indexes that needs priority checking first, but they can still be used to detect anomalies in profile configurations.

4. Common anomalies encountered in check results

Analyzing results on Browserleaks should not rely solely on individual metrics. An abnormal parameter is not necessarily an issue, but if multiple data points display mismatchingly, the profile can become unnatural in the eyes of tracking systems.

4.1. Contradictions between timezone, geolocation, and language

This is one of the most common and easily detected mistakes. If the IP address, timezone, and browser language point to different regions, the profile will present many hard-to-explain signs.

For example, the IP address is in the US, but the browser uses the Asia/Ho_Chi_Minh timezone and the default language is Russian. Such combinations usually raise suspicion levels when systems evaluate the access environment.

4.2. Contradictions between identification data layers

Many individuals only focus on adjusting a few individual parameters while ignoring the connection between data groups.

Some frequently encountered cases include:

• The User-Agent does not correspond to the operating system currently being declared.
• The WebGL information does not accurately reflect the hardware environment.
• Client Hints display differently from the User-Agent.
• The TLS fingerprint does not match the usual behavior of the browser in use.

These signs make the browser profile look less natural and easily draw the attention of risk evaluation systems.

4.3. Confusing a clean IP with a clean profile

Not leaking your IP address does not equate to the profile being safe. In many cases, accounts can still be linked if they share the same fingerprint or present anomalies in other data groups.

Therefore, besides the IP and WebRTC, you should also check indexes like Canvas, WebGL, and User-Agent.

4.4. Skipping WebRTC check

Many people only look at the IP Address section and conclude that the profile is clean. However, WebRTC is where real IP address leakage typically occurs.

If WebRTC still displays the real IP of the device or local network, platforms can still collect information outside the proxy or VPN currently being used.

This is why WebRTC is always ranked in the high-priority group to be checked first.

4.5. Checking the wrong browser profile

Another quite common error is opening Browserleaks using the default browser on the computer instead of the profile that needs evaluation.

When that happens, the displayed result will not accurately reflect the configuration of the profile in use, rendering the check meaningless.

Before beginning the test, make sure Browserleaks is opened directly inside the profile that needs checking.

4.6. Checking only once

The fingerprint can alter when you change the proxy, update the browser, or adjust the profile configuration.

Thus, checking just once and using it long-term might not be sufficient. Every time changes are made regarding the browser environment, you should re-run Browserleaks to confirm that the parameters still function as desired.

In practice, many profiles encounter issues not because of a specific parameter, but because the displayed data points tell different stories about the same device. Detecting these contradictions early is often far more effective than trying to optimize each individual metric.

5. Using Browserleaks alongside the antidetect browser Hidemyacc

Browserleaks helps display information that websites can collect from your browser. However, this tool mainly plays the role of checking and evaluating results. To minimize anomalies right from the setup phase, many people choose to use an antidetect browser to build an isolated browser environment for each account.

5.1. What is Hidemyacc?

Antidetect browser Hidemyacc is a tool to create and manage multiple independent browser profiles on the same device. Each profile owns a separate set of data, including browser fingerprints like User-Agent, operating system, screen resolution, and other device specifications; system settings like language and timezone; along with browser data such as cookies, local storage, and activity history.

Parameters such as Canvas fingerprint, WebGL, WebRTC, and User-Agent are configured synchronously from the start, helping to limit contradictions between data layers and creating a consistent browsing environment. When connecting a proxy, the timezone and language also automatically adjust to the connection location.

This solution is suitable for those operating multiple accounts and needing to maintain an isolated browsing environment for each profile.

5.2. Process of checking Hidemyacc profiles with Browserleaks

After creating a browser profile, you can use Browserleaks to re-check the parameters before putting it into use. This process helps confirm that the environment is working properly according to the configured setup.

• Step 1: Create a new browser profile in Hidemyacc. Create a new profile and select the configuration that fits your usage needs. In most cases, default settings are already synchronized, so not much editing is required.

• Step 2: Connect the proxy. Add a proxy to the newly created profile. It is recommended to use a proxy whose geographical location fits the account that needs managing to ensure that the IP address, timezone, and language are displayed consistently.

• Step 3: Open Browserleaks to test the profile. Launch the profile in Hidemyacc and access Browserleaks. Here, check key information one by one, such as: IP address and geographical location, timezone, WebRTC, Canvas fingerprint, etc.

• Step 4: Cross-reference results. Cross-reference the results with the configured setup. If the metrics are consistent and show no contradictions, the profile is ready for use.

Performing this extra check step will give you peace of mind before putting the profile into actual operation.

6. Notes when using Browserleaks

Browserleaks is a useful tool to check fingerprints and detect anomalies in browser profiles. However, for the results to accurately reflect the environment in use, you should keep a few points in mind:

• Results are temporary: The parameters displayed on Browserleaks can change when you switch proxies, update the browser, or adjust the profile configuration. Therefore, today's test results might not hold up in subsequent uses.
• Not all indexes carry equal importance: When evaluating a profile, you should prioritize resolving issues related to IP, WebRTC, and fingerprints first. Indexes like screen resolution or language usually just play a supporting role.
• Browserleaks does not provide an overall score: Unlike some tools like CreepJS, Browserleaks mainly displays detailed data for each module. Users need to self-evaluate and cross-reference results instead of relying on an aggregated score.
• Do not rely on a single tool: Each tool has a different approach. Browserleaks is suitable for checking each index in detail, while other platforms might provide an overall perspective on the fingerprint or the browser's tracking capabilities.
• Re-test after every configuration change: Every time you change a proxy, update the browser, or edit a fingerprint, you should re-run Browserleaks to confirm that the parameters still display exactly as desired.

Browserleaks does not make a profile safer, but it can let you know what information is being displayed to the outside. Clear understanding of this data will help make profile construction and management more proactive.

7. Conclusion

Browserleaks is a tool that helps check information that websites can collect from your browser, from IP addresses and WebRTC to browser fingerprint indexes. Instead of focusing on each individual parameter, look at the results as a whole to detect abnormal signs in the profile. When combined with profile creation solutions like Hidemyacc, checking and managing multiple accounts also becomes far more convenient.

8. FAQ

1. Is Browserleaks free?

Yes, browserleaks.com is completely free and does not require account registration. Accessing directly and running each test is sufficient.

2. Why does Browserleaks display my real IP despite using a proxy?

The most common cause is that WebRTC is enabled and exposing the local IP address. You need to disable WebRTC in the browser settings or use a WebRTC control extension to fix it.

3. Can Browserleaks check the canvas fingerprint?

Yes. Browserleaks has a dedicated Canvas module that displays the browser's identification hash. If multiple profiles yield the same hash, those profiles are being linked together.

4. Is using Browserleaks to test a VPN accurate?

It can be used to check for IP and WebRTC leaks when using a VPN. However, Browserleaks does not comprehensively evaluate the safety of the VPN; it only shows what information is exposed to the outside at the time of the test.

5. How often do I need to re-test on Browserleaks?

You should re-test after every proxy change, profile configuration update, or browser version upgrade. Periodic testing is not required if there are no changes to the setup.