How to Transfer Profiles from Another Browser to Undetectable

When moving to another anti-detect browser, you want to keep your familiar working environment: accounts, cookies, proxy connections, and a clear separation of projects. To avoid having to figure out after the transfer which profile belongs to whom and why a site is asking for authorization again, start with one environment — and only after checking it, transfer the rest.

Undetectable has three main migration methods: the Undetectable Converter extension, manual cookie import, and transfer via the local API. They are suitable for different situations.

Let’s look at each method and go through an example: transferring the work profile Client-A from another browser to Undetectable.

Which transfer method to choose

What you have	How to transfer	What you will need
The profile in the old browser opens, and you can install an extension in it	Undetectable Converter	The source profile running and the Undetectable app on the same computer
Cookies are already saved as separate files	Manual import	Create profiles in Undetectable, upload cookies, and configure connections
You have many profiles, a data export, or your own scripts	Local API	Prepare the data and automate profile creation
A .prof file previously exported from Undetectable	Built-in profile import	Open Profile Manager and import the file

For a first migration, Converter is usually more convenient. If the old profile no longer starts, but you still have cookies, use manual import.

Undetectable Converter and Cookies Converter are different tools. The first is an extension that creates a profile in the application. The second is a service for converting the cookie format; it does not transfer profiles by itself.

What is transferred and what needs to be prepared separately

Migration via Converter does not create a full copy of the old browser. It transfers cookies and uses the available parameters of the source environment when creating a new profile.

Data	What happens to it
Cookies	Transferred to the new profile
Browser and device parameters	Used when creating the environment; the result needs to be checked
Proxy	Connected separately
Profile name	Set during transfer
Folders, tags, and notes	Transferred manually or via API
Extensions and their data	Not transferred by Converter; installed and configured separately
Bookmarks and open tabs	Not transferred by Converter
localStorage, sessionStorage, IndexedDB	Not transferred by Converter
Saved passwords	You should not rely on them being transferred via Converter

The new profile also does not receive an exact copy of the old digital fingerprint. In particular, you should not expect Canvas, WebGL, Audio, or the font list to match. It is important to take these limitations into account when planning a migration to Undetectable.

This leads to one more point: importing cookies may preserve authorization, but it does not guarantee it on every site. Some services use additional storage, check the new environment, or require login confirmation again.

What to prepare before migration

Make a list of profiles

For several environments, a simple table is enough:

Source profile	Name in Undetectable	Proxy	Status
Client-A	Client-A	Proxy-A	To be transferred
Client-B	Client-B	Proxy-B	To be transferred
Client-C	Client-C	Proxy-C	To be transferred

If you work in a team, add the responsible employee.

This kind of table is especially useful when profile names in the old browser differ from client names. It will help you avoid mixing up cookies, connections, and check results.

Keep access to the source data

Do not delete old profiles immediately after creating new ones. First check that the necessary accounts open in Undetectable, the connections work, and the tools for your daily task are available.

Make sure in advance that you have access to passwords and login confirmation methods. Cookies do not replace the ability to restore authorization.

Write down the proxy parameters: connection type, address, port, login, and password, if they are used. For a mobile proxy, save the IP change link.

Check the required plan features

For transfer via the local API, which Converter uses, you should use a paid plan — starting with Base. Professional is not required just for this kind of migration.

Do not confuse this with exporting local profiles from Undetectable: that has separate plan conditions.

Choose one profile for testing

Start with an environment that represents your usual workflow. For example, it may include a client dashboard, active authorization, a proxy, and one required extension.

This way, you will check not only that a new row appears in the list, but also that you can continue working.

Method 1. Transfer via Undetectable Converter

The extension is installed in the browser profile from which you are transferring data. For example, if you are moving from another anti-detect browser, first launch the required environment inside it, and then install Converter in the browser that opens.

Installing it in a regular Chrome on your computer will not give the extension access to the cookies of individual profiles from another anti-detect browser.

Step 1. Start Undetectable

Open the application and sign in to your account. It must remain running during the transfer.

The source browser and Undetectable must run on the same computer: Converter connects to the local application.

Step 2. Find the local API address

In Undetectable, open:

Settings → Main → API address In our example interface, the address looked like this:

127.0.0.1 : 25325

127.0.0.1 means your computer, and the number after the colon is the port for connecting to the application.

This is not a proxy address. The extension must use the port from the Undetectable settings. If it is different in your program, use your own value.

You do not need to change the application’s working port just to match the example in the instructions.

Step 3. Open the source profile

For our example, launch Client-A in the old browser.

Make sure this is the correct environment: open the work site and check the account. Finish your current actions so that you do not change data in two browsers at the same time during the transfer.

Do not log out of the account specifically before the transfer — the goal is precisely to preserve the available session data.

Step 4. Install the extension in this profile

Open the appropriate official store:

• Undetectable Converter for Chromium browsers;
• Undetectable Converter for Firefox.

After installation, find Converter in the extensions menu. If necessary, pin its icon to the browser toolbar.

The extension collects cookies from the current browser profile, not only from the site in the active tab. If personal and work accounts are mixed in one regular Chrome profile, opening the right tab will not separate them from each other.

When you need to transfer only a specific set of cookies, it is more convenient to prepare a separate export and use manual import.

Step 5. Specify the name and port

Click the Converter icon.

In the Profile name field, enter a clear name, for example:

Client-A

In the Undetectable local API Address field, check the port against the application settings.

For multiple clients, keep names consistent. If all new profiles are named Test or New profile, it will be much harder to check the result.

Step 6. Click Create profile

The extension will send the data to Undetectable and create a new profile. Wait for the operation to complete.

After the Profile is created message, find the profile by the specified name in the application.

The verified field names and action order correspond to the Undetectable Converter interface.

If the result is unclear, first check the profile list. Do not click the button repeatedly: creating it again may produce duplicates.

Step 7. Connect the proxy before the first work launch

Open the settings of the new Client-A and assign the required proxy to it. If the previous connection still works, use it for the first test. This way, fewer conditions will change at the same time during the migration, and any possible problem will be easier to localize.

Check the proxy type, address, port, and authorization data. Run a connection check and save the settings.

Also check the start page: the profile should not accidentally open the work dashboard before you have configured the connection.

Step 8. Check the profile parameters

Compare the main settings with what you planned to transfer:

• operating system and browser environment type;
• screen resolution;
• CPU and memory;
• languages and time zone;
• assigned proxy.

Do not expect a byte-for-byte match of the User-Agent or other parameters. Converter helps create a new environment based on available data, but transfer is not the same as cloning the old browser.

If you are also changing the computer or operating system, test that scenario separately before a mass migration.

How to check the transferred profile

The profile appearing in the list confirms that it has been created. To start working, you need a few more checks.

Check cookies

In the profile settings, open the Cookie → View tab and find the domain of the required site. The presence of entries shows that the data has made it into the profile. But whether authorization is valid is checked on the site itself.

Check the connection

Launch the profile and check the outgoing IP. Make sure the assigned proxy is being used and that the connection matches your work scenario.

If the page does not open, first deal with the connection. Re-importing cookies will not fix an unavailable proxy.

Open the work site

Check that:

• the correct account is open;
• the necessary sections are available;
• you can perform a normal work operation;
• there is no unfinished request to confirm login.

For the Client-A example, this may mean opening the client dashboard and viewing its settings without changing data.

If the site asks for authorization, complete it in the usual way. A request to log in again by itself does not mean that the transfer was done incorrectly.

Repeat the check after closing

Close the profile in the usual way, then open it again.

Make sure the connection and working state have been saved. After that, mark Client-A as checked and move on to the next environment.

Method 2. Manual transfer via cookies

This option is suitable if you already have a cookie export or want to prepare the new profile yourself.

The sequence is as follows:

export cookies → create environment → configure proxy → import → check site.

Step 1. Export cookies from the source profile

Use the export tool available in the old browser.

Save the data for each environment separately:

Client-A.cookies.json

Client-B.cookies.json

Client-C.cookies.txt

Do not combine cookies from different clients into one file to upload into one profile.

The export command name depends on the source browser. What matters is that you get cookies specifically, not a profile archive in its own format.

Step 2. Check the format

Undetectable supports cookie import in JSON and Netscape. If you already have a valid file in one of these formats, no additional conversion is required.

You can choose the file through the file explorer, drag it into the import field, or paste cookies as text. These methods are available in the cookie tools.

If you need to convert Netscape to JSON, use Cookies Converter:

1. Open the cookies file as text.
2. Copy the contents into the Netscape format field.
3. Click Convert.
4. Copy the resulting JSON.
5. Use the result when importing into the profile.

The converter changes the data structure. It does not restore expired authorization and does not extract cookies from an arbitrary archive of a third-party browser.

Step 3. Create a profile in Undetectable

Click New Profile and set a name, for example Client-A.

Choose a suitable configuration, check the main parameters, and configure the proxy connection.

For manual transfer, these actions are especially important: the cookie file by itself does not set the IP, configuration, language, or time zone of the new profile.

For the first test, it is more convenient to create a separate new environment so that imported data is not mixed with existing cookies.

Step 4. Upload cookies

In the profile settings, go to:

Cookie → Import Select the file or paste the prepared data. Complete the import and save the profile.

Pay attention to the Import expired cookies setting. If importing expired cookies is disabled, such entries will be skipped. Enabling this option does not extend the session lifetime on the site side.

When working with an existing profile, first close its browser window and make sure you are editing the correct environment.

Step 5. Check the result

Open Cookie → View, find the domain, then launch the profile and check the work site.

The same checks apply to manual transfer as to Converter: connection, correct account, normal work operation, and relaunching the profile.

Method 3. Mass migration via the local API

If you have hundreds of environments and the data can be obtained in structured form, manual transfer will take a lot of time.

The local API allows you to automate the creation of profiles with cookies, proxies, and organizational data. But it does not extract information from another browser on its own: first you need to obtain an available export or prepare your own export.

How to organize this kind of transfer

1. Prepare the source data. For each environment, save its identifier, name, cookies, connection parameters, and necessary settings.
2. Define field mapping. Decide how old names, folders, tags, and notes will be represented in Undetectable.
3. Create one profile. This uses the POST /profile/create request.
4. Save the received ID. Link it to the identifier of the source profile.
5. Check the result. Read the parameters and cookies of the created environment, then check the work scenario.
6. Transfer the remaining profiles in batches. Record successes and errors separately.

Field names and available methods are collected in the local API reference.

A table like this is enough to track the result:

Source ID	Name	New ID	Creation	Check
source-001	Client-A	ID from the API response	Successful	Passed
source-002	Client-B	ID from the API response	Successful	Login required again
source-003	Client-C	—	Error	Not launched

Separate successful profile creation from readiness for work. These are different stages.

If the request timed out, first check whether the profile appeared. Resending without checking can create a duplicate.

If you already have automation in the old browser, separately adapt the commands for creating, starting, and stopping profiles. Work scenarios inside pages should also be checked on one new environment before a mass launch.

Can you simply import an archive from another browser

Undetectable’s built-in profile import and transfer via Converter solve different tasks.

If you have a .prof file exported from Undetectable, open Profile Manager → Import, select the file, and wait for the profiles to appear. Import is available starting with Base. More details are in the instructions for importing and exporting profiles.

A third-party browser archive cannot be considered compatible just because it also contains profile data inside. Renaming the file extension does not convert its structure.

For a third-party format, use Converter, an available cookie export, or data preparation for the API.

What to configure after transfer

Extensions

Install the required work tools again. Installing an extension does not automatically restore its internal data, settings, or authorization.

A common set can be added through Extensions Manager. Keep in mind that extensions added this way are applied to existing and new profiles. For individual tools, it may be more convenient to install them inside a specific environment.

For wallet extensions and other tools with their own storage, use their provided recovery procedure. Cookie transfer does not replace it.

Bookmarks and start pages

Restore the links you use every day. If the source browser lets you export bookmarks, save them separately.

Check start pages and launch behavior so that the new profile opens the required work resources.

Folders, tags, and notes

Recreate your familiar project organization. For example:

• folder — client;
• tag — transfer stage;
• note — what still needs to be checked.

Do not leave all transferred environments in one pile until the migration is complete. Sorting them out from memory will be harder.

Team access

After checking, determine which profiles should be available to colleagues. Configure cloud storage, groups, and user permissions for them.

A locally created profile does not become available to other employees just because they use the same subscription.

If a problem occurred during transfer

Situation	What to check
Converter shows Run Undetectable or check port number	Whether the application is running, whether you are signed in, whether the port matches, and whether both browsers are running on the same computer
Converter says that the profile cannot be created	Plan features, availability of configurations, and whether you can create a regular profile manually
The new profile is not visible	Search by name, active filters, the selected folder, and the operation result in the extension
Identical profiles were created	Whether you sent the request again before checking the first result
The site asks you to log in again	The presence of cookies for the required domain, their expiration, and the site’s additional requirements
A different account opened	Whether the correct source profile was selected and whether the cookie files were mixed up
Cookies are not importing	Whether this is actually JSON/Netscape, whether the file is corrupted, and whether a path to it was pasted instead of the data
The work site does not open	The proxy, authorization with the provider, and availability of the connection on this computer
The extension or its settings are missing	They need to be installed and restored separately; Converter does not transfer them

If there is a proxy problem, check it on the same computer with and without a VPN, or in another program. A working status in the proxy provider’s dashboard does not yet confirm that the connection is available from your network.

If the error remains, save its exact text and the stage at which it occurred. This is more useful for diagnostics than repeating the transfer of the entire set of profiles.

When you can finish the migration

Consider a profile transferred when you can continue normal work in it:

• the environment has a clear name;
• the required proxy is assigned and checked;
• the correct account opens;
• the necessary extensions work;
• work links and settings have been restored;
• the state is saved after closing and relaunching;
• employees have been given the required access if the profile is used by a team.

After checking the first profile, transfer a small group and repeat the same procedure. Then move on to the rest.

This keeps the migration manageable: for each environment, it is clear which data has been transferred, what has been checked, and what still needs to be configured.