Chromium browser

This page describes how to run latest Chromium browser (v30) faster, keep it secure and your privacy protected.

Browser, that shares all data (cookies, sign in, etc) among all processes running with this instance. Instance is associated with profile.
Folder, that allows to run a new (and separate) instance of the browser. See details here.
Users are defined within one instance. User accounts contain separate preferences and states. User data is located within Profile folder (e.g. Default, Profile 1, Profile 2, etc). See details here.
Keep in mind

Profile folder contains: a) configuration settings and b) temporary data (various caches, temporary files, databases of tracking data, history, session storage, etc). The former is important to keep (if you want to have your settings permanent), while the latter could be easily discarded. Moreover, if you're concern about tracking data always accumulated in your computer and don't want to keep that data indefinitely, it's recommended to remove it on a regular basis.

Here is list of configuration files, that you may want to keep in your Profile folder:

│   First Run                          -- needed to avoid first run nag
        Bookmarks                      -- your bookmarks
        Cookies                        -- your recent cookies
        Custom Dictionary.txt          -- personal dictionary
        Favicons                       -- favicons
        Preferences                    -- preferences
        Secure Preferences
        Web Data                       -- to keep Search engine configured

Other files/folders, residing within Profile folder, are temporary and could be removed at any time (with browser closed, of course).

Copying custom profile

We recommend to make a copy of your custom profile. In order to do so:

  1. Run Chromium browser, adjust all its settings per your needs, install your browser exertions, etc. When you done, close the browser.
  2. Copy configuration files from your current profile, used in p.1 into some folder (e.g. D:\Tmp\Chrm\p). See the list of configuration files recommended to copy into that new folder above. To make the task easier we recommend to use ChrmCopyProf.bat file (see description below)
  3. At this time you may want to create a backup copy of that new custom profile folder as well. Copy your new custom profile folder into a new e.g. D:\Tmp\Chrm\p.def folder. When you run browser with custom profile folder directly, its content is quickly polluted with temporary files. Thus, by keeping backup copy separately, you may easily remove your custom profile and copy it back from that backup copy at any time later.

Now you may run your browser, pointing to that new custom profile folder (D:\Tmp\Chrm\p) as your new profile.


This script facilitates task of making copy of all configuration files from current profile into a new folder.

How to use it:

Running separate instances

Generally there are two ways of running Chromium browser with custom profiles that we may recommend:

Running with permanent custom profile

It will run Chromium browser using specific custom profile. You may adjust all browser settings, accept cookies, install new extensions, etc and save it in the same profile folder. And you can make a new copy from that profile at any time and use it as your new default profile.

  1. Copy your custom profile into a folder, e.g. to D:\Tmp\Chrm\p
  2. Create a shortcut, with Target containing a command line similar to this one:
    "%ProgramFiles%\Chromium\chrome-win32\chrome.exe" -user-data-dir="D:\Tmp\Chrm\p"
  3. Use that shortcut to launch a new window of Chromium browser

Note: all subsequent runs will reuse the same profile and, therefore, potentially collect and share all its data.

Running with temporary custom profile

You can launch s new Chromium browser instance completely separated from other instances, by clicking on a shortcut (see instructions below). Every time you click on it, the new and unique instance of the Chromium browser will be created. The new instance of the browser will not share any data with other running instanced. And when you close the browser all browsing history, cookies, other session data will be deleted automatically.

In order to do so you need:

  1. Make a new and unique temporary profile folder. Copy into it your custom profile from backup copy made earlier (D:\Tmp\chrm\p.def folder).
  2. Launch new instance of Chromium browser, using that new folder as its profile
  3. After you close the browser, remove that temporary folder.

We offer you ChrmNewInst.bat script, that will do all of the above automatically. If you don't want to see ugly black CMD window, running the BAT file when you use browser, you may want to run it in a hidden window. It's easy to do with our CMDH tool.

You may want to make a new shortcut, that will launch new instance of Chromium with unique temporary profile. It's Target could contain command line, similar to this one:

"C:\WINDOWS\CMD\cmdh.exe" "C:\WINDOWS\CMD\ChrmNewInst.bat"

Note: command line points to CMDH.exe tool (put it in any appropriate directory) and to ChrmNewInst.bat file, that will actually do the job.

All running sessions, started with this shortcut, are completely independent and unique. They won't share any data and the data itself will not be preserved for next runs.


Script accepts any options, that could be used with Chromium browser. You can launch browser in multi process mode (see example above). Or you may want to launch it in a single process mode, opening a web site at its start. For example, you may run it from a shortcut with this Target:

"C:\WINDOWS\CMD\cmdh.exe" "C:\WINDOWS\CMD\ChrmNewInst.bat" --single-process
How to use it

If you use your temporary custom profile, you may want to:

   D:\Tmp\Chrm\p - profile folder contains (and continue to accumulate) all temporary data
   D:\Tmp\Chrm\p.def - profile folder contains only configuration files, that you want to keep


The latest Chromium build you can download from Softpedia. Unpack zip file into any folder, e.g. %ProgramFiles%\Chromium.

Download: (zip contains ChrmCopyProf.bat and ChrmNewInst.bat files).

Size: 2064 bytes (3.0 KiB)

CRC32: 539E89B4; MD5: 0D40979F22E4295412B368FED10C8494

Last modified: 2017-06-06 Copyright © 2000-2017 Gate2NET. All Rights Reserved.