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Fri, Nov 10, 2017 5:19 pm

Removing a site's cookies in Google Chrome 62

To remove cookies for a specific site in Google Chrome version 62, take the following steps:

  1. Put chrome://settings/siteData in the Chrome address bar where you normally place URLs which will show you a list of all the cookies stored on the system.
  2. In the "Search cookies" field, type the relevant domain name, e.g., mattel.com; you will then see only the cookies for that particular domain.
  3. Click on "REMOVE ALL SHOWN" to remove all of the cookies for the domain. You will then be warned "This will delete any data stored on your device for all the sites shown. Do you want to continue?" Click on the "CLEAR ALL" button to delete all of the cookies for the domain.

You can also go directly to the list of all the cookies associated with a particular domain by putting chrome://settings/cookies/detail?site= followed by the domain name in the address bar, e.g., chrome://settings/cookies/detail?site=mattel.com. You can then click on "REMOVE ALL" to delete all of the listed cookies for the domain.

Note: Tested with Google Chrome Version 62.0.3202.89 (Official Build) (32-bit) on a system running Microsoft Windows 7 Professional.

[ More Info ]

[/network/web/browser/chrome] permanent link

Wed, Jun 22, 2016 12:02 am

Open sites list for a Chrome process on OS X

Chrome on a MacBook Pro laptop running OS X Yosemite (10.10.5) that I was using became unresponsive. Activity Monitor showed a Google Chrome process was using about 100% of the CPU cycles. I wanted to see what web sites the process was accessing in the browser tabs associated with the process. One way to do so is to double-click on the Chrome process in the Activity Monitor, which will open a smaller window showing information on that process. Click on the Open Files and Ports tab on that window. You can then copy the information you see in that window into a file and, using grep, extract all of the lines containing the IP address of the system, which will provide a list of sites accessed by the Chrome process.

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[/network/web/browser/chrome] permanent link

Thu, Jun 09, 2016 11:09 pm

High CPU usage by the Google Chrome browser on an OS X system

When I started using a MacBook Pro laptop running OS X Yosemite (10.10.5) today, I found that the Google Chrome browser (version 35.0.1916.153) was slow to respond when I attempted to access web pages. When I checked the system CPU usage from a Terminal tab using the top command, I found a Google Chrome process with process identififer (PID) 29634 was consuming about 90% of the CPU cycles.

$ top -o cpu

Processes: 318 total, 7 running, 11 stuck, 300 sleeping, 2181 threads  10:57:11
Load Avg: 3.82, 6.20, 6.94  CPU usage: 35.23% user, 5.81% sys, 58.95% idle
SharedLibs: 16M resident, 10M data, 0B linkedit.
MemRegions: 187449 total, 7337M resident, 52M private, 1115M shared.
PhysMem: 16G used (2532M wired), 19M unused.
VM: 703G vsize, 1063M framework vsize, 11083768(0) swapins, 16907853(0) swapouts
Networks: packets: 17956740/12G in, 13426851/3518M out.
Disks: 13779844/398G read, 14840307/588G written.

PID    COMMAND      %CPU TIME     #TH    #WQ  #PORT MEM    PURG   CMPRS  PGRP
29634- Google Chrom 89.2 23:16:01 13     0    85    817M+  0B     638M-  515
28991- Google Chrom 30.7 23:37:36 10/1   0    78    124M+  0B     344M-  515
0      kernel_task  20.6 32:32:35 104/10 0    2     1685M+ 0B     0B     0
30147- Google Chrom 14.7 18:55:10 10     0    78    47M+   0B     87M    515
609-   Google Chrom 12.9 13:55:01 4/1    0    93    153M+  0B     859M-  515
75040- Google Chrom 12.7 09:26:48 19     0    89    100M+  0B     523M-  515
46990- Google Chrom 12.4 16:15:41 10     0    78    53M+   0B     194M-  515
55854- Google Chrom 11.1 12:09:27 10     0    78    42M    0B     100M   515
79850- Google Chrom 11.0 02:49:58 10     0    78    44M    0B     91M    515
55744- Google Chrom 10.5 12:19:13 20     0    92    31M+   0B     148M-  515
79625- Google Chrom 10.2 06:55:52 11     0    82    95M+   0B     442M-  515
83785- Google Chrom 9.1  04:23:07 10/1   0    78    35M+   0B     135M-  515
84883- Google Chrom 9.1  04:30:16 10/1   0    78    36M-   0B     71M-   515
190    WindowServer 8.8  14:29:00 5      1    1590- 44M-   8952K  628M   190
60247- Google Chrom 8.0  05:43:24 11/1   0    81    91M+   0B     247M-  515

You can determine what web pages a Google Chrome process has open by putting chrome://memory in the Chrome address bar. Once you've identified the relevant Chrome window/tabs associated with a process, you can close the tab, or tabs, that may be associated with the process to reduce CPU usage. If needed, you can also suspend a process temporarily under OS X with the kill command.

[ More Info ]

[/network/web/browser/chrome] permanent link

Mon, Jul 13, 2015 10:49 pm

ChromeCacheView - Cache viewer for Google Chrome Web browser

I recently overwrote a file with notes about a problem I had to deal with that was residing on a web server by moving another file over top of it accidentally. I was in a hurry to complete my notes so I could go to bed; I thought about waiting until the morning to complete the notes, but thoughit I could complete them in just a few more minutes, but when I used !:1 as a shorthand in a mv command, I didn't realize that the second item on the last command line entry was the filename for the file with my notes. I didn't realize what I had done until I tried to view the web page with my notes from the PC I was using at the time for the SSH connection to the web server.

Since I had viewed the notes in the Google Chrome browser on the Microsoft Windows-based system I was on shortly before I overwrote them, I thought I might be able to find a copy of the notes in the browser's cache. But since I didn't grasp what I had done until I refreshed the page in the browser, it was now too late to get the data from the Chrome cache, since the cached page now just showed the "404 file not found" message due to the file no longer existing on the web server. So I thought there still might be a slim chance that I could recover the notes web page from a Volume Shadow Copy, i.e., a prior version of the file stored on the Windows system. I thought, if I could identify the particular cache file used for that webpage, there might be a prior version of that file stored by the Volume Shadow Copy Service. I thought I could possibly use ChromeCacheView, which is a small, free program that will allow you to examine the Google Chrome web browser cache. With that program you can view a list of all cached web pages and view the cached copies of those pages stored on the system. I was able to identify the particular file in the C:\Users\%username%\AppData\Local\Google\Chrome\User Data\Default\Cache directory that held that particular cached webpage. The file was data_4, but unfortunately, I wasn't able to find a prior version of the file. Though if you need to examine the Chrome cache on a Microsoft Windows system, ChromeCacheView is a very useful tool well-suited to that purpose. You can also put chrome://cache in the Chrome addres bar to see a list of URLs of cached pages, but ChromeCacheView provides many more capabilities for operations on that list of cached items.

[/network/web/browser/chrome] permanent link

Sat, Jul 11, 2015 10:58 pm

Restoring home and start pages in Chrome after installing Yahoo Messenger

After my wife installed the Yahoo Messenger Suite so that she could chat with a friend using it, on opening the Google Chrome browser, the Yahoo Search - Web Search page would appear. She didn't want that; she wanted to have google.com as her home page and to have a tab open to that when she started the browser as had occurred prior the the installation of the Yahoo Messenger software. She said she had chosen not to install the Yahoo toolbar and not to have it make such changes when she installed the software, so was irked to find her home page was "hijacked" to be a Yahoo search page. I found that I need to change both her home page and the start page for Chrome to put her settings back to what they had been prior to the installtion of the software.

[ More Info ]

[/network/web/browser/chrome] permanent link

Sat, Jul 04, 2015 12:56 pm

Chrome Memory Usage under Windows

Oftentimes I've found that a web browser is responsible for high memory utilization or high CPU usage on a system. But determing what tab or tabs is culpable can be difficult. Fortunately, Google provides a mechanism for doing so within its Chrome browser. By putting chrome://memory in the address bar in a tab within the browser, you can get details on the total memory usage by all browsers open on the system and the memory consumed by tabs within Chrome.

[ More Info ]

[/network/web/browser/chrome] permanent link

Fri, May 08, 2015 10:11 pm

High Chrome memory utilization

Checking on the cause for slow performance on a Microsoft Windows system, I opened the Task Manager and saw that memory utiilization was high. Clicking on the Memory column header to order the list of processes by memory utilization, I saw that the Google Chrome web browser was consuming most of the memory; there were many Chrome tabs open in the browser.

Task Manager - Chrome Memory Utilization

I could see that the Chrome tab consuming the most memory was one consuming 937.2 MB of memory.

To determine what webpages associated with tabs open in Chrome are consuming excessive amounts of memory or CPU time, put chrome://memory in the address bar of the browser. That will provide information on the amount of memory consumed by each tab open in the browser as can be seen in this example. Since the entries aren't ordered by memory utilization, you will need to scroll through the list to find the tabs consuming the most memory.

In this case, when I scrolled through the list I saw the tab that was consuming 937.2 MB of memory had a CNN.com article open in it. When I went to that tab I saw a "Shockwave Flash has crashed" message at the top of the tab. When I clicked on "Reload", I saw that memory utilization for that tab inreased slightly. Moving back to a prior page in the tab with the back arrow resulted in the Task Manager then showing the highest memory utilization for a Chrome process to be about half the 937.2 MB shown previously. I closed the tab to free memory.

[/network/web/browser/chrome] permanent link

Tue, Mar 03, 2015 10:54 pm

Displaying Google Chrome browser information with chrome://

You can reveal a lot of internal Google Chrome browser information by putting chrome:// in the Chrome address bar.

E.g., Google Chrome maintains its own internal DNS cache. You can display the entries in that cache by putting chrome://dns in the address bar for Chrome. When you do so, you will see information similar to that displayed below:

Future startups will prefetch DNS records for 10 hostnames
Host nameHow long ago
(HH:MM:SS)
Motivation
http://support.moonpoint.com/244:53:05n/a
https://accounts.google.com/244:52:59n/a
https://chrome.google.com/244:53:45n/a
https://clients2.google.com/244:53:41n/a
https://clients2.googleusercontent.com/244:53:37n/a
https://fonts.googleapis.com/244:53:03n/a
https://ssl.gstatic.com/244:53:03n/a
https://www.google.com/244:53:16n/a
https://www.googleapis.com/244:53:46n/a
https://www.gstatic.com/244:53:03n/a

You will also see a page load count for web pages.

If you put chrome://downloads/ in the address bar you will see a list of the recently downloaded files and the URLs that were used to download them as well as the dates on which the files were downloaded..

You can view Chrome's history information showing a list of recently visited pages with the days and times they were visited with chrome://history/.

You can see information on Chrome's memory utilization, including the amount of memory used by each Chrome tab using chrome://memory. That will also reveal the amount of memory used by other browsers, such as Internet Explorer and Firefox, that are open on the system. E.g., this is an example from a Windows 7 system where 3 tabs are open within Chrome, one for Wikipedia, one for Google, i.e., google.com, and one for chrome://memory itself, which is labeled "About Memory". The tabs are identified by Tab at the beginning of the name. IE 11 and Firefox 35.0.1 are also open on the system and so information about their memory utitlization is also displayed.

References:

  1. 12 Most Useful Google Chrome Browser chrome:// Command
    By Ramesh Natarajan
    Date: October 12, 2011
    The Geek Stuff

[/network/web/browser/chrome] permanent link

Mon, Mar 02, 2015 11:06 pm

Setting Chrome as the default browser

To set Chrome as the default browser, take the following steps:
  1. Click on the menu bar, which is 3 horizontal bars one beneath the other at the top right of the Chrome window. Chrome menu bar
  2. Select Settings.
  3. Click on the Make Google the default browser.
  4. On a Windows system, you may see a window asking "How do you want to open this type of link (http)?" which shows the other browsers on the system that can be used to access websites. Click on Google Chrome

    Browser list for
opening http links

When you do that, the HKEY_CLASSES_ROOT\http\shell\open\command is updated as shown below when the query was run before and after the default browser was changed from Internet Explorer to Google Chrome on a Windows Server 2012 Essentials system.

C:\>reg query HKEY_CLASSES_ROOT\http\shell\open\command /ve

HKEY_CLASSES_ROOT\http\shell\open\command
    (Default)    REG_SZ    "C:\Program Files\Internet Explorer\iexplore.exe" %1


C:\>reg query HKEY_CLASSES_ROOT\http\shell\open\command /ve

HKEY_CLASSES_ROOT\http\shell\open\command
    (Default)    REG_SZ    "C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" -- "%1"

If Firefox is the default browser, the value will be similar to the following, depending on where you installed Firefox:

"C:\Program Files\Mozilla Firefox\firefox.exe" -osint -url "%1"

References:

  1. Determining the default browser from the command line
    Date: July 18, 2014
    MoonPoint Support

[/network/web/browser/chrome] permanent link

Sun, Feb 22, 2015 1:06 pm

Installing Evernote Web Clipper for Chrome

To be able to use Evernote Web Clipper with Chrome, you can take the following steps.
  1. Inside the Chrome browser, click on the menu bar button, which is represented by 3 horizontal lines, one beneath the other, in the top, right-hand corner of the Chrome browser window.
  2. Click on More Tools.
  3. Select Extensions.
  4. Scroll down to you see "Get more extensions" then click on the link for it.
  5. In the "Search the store" field, type Evernote and hit Enter .
  6. Click on "Evernote Web Clipper"
  7. At the "Evernote Web Clipper" page, click on the "+ ADD TO CHROME" button to install the extension.
  8. At the "Confirm New Extension" popup message, click on "Add". You should see a message stating Evernote has been added to Chrome when the installation has completed. You can then sign into your Evernote account.

The icon for Evernote, which is an elephant's head, should then appear next to the Chrome menu bar without having to restart Chrome. You should also see "Evernote Web Clipper" listed as enabled in the Chrome extensions list. You can click on "options" for Evernote Web Clipper in the extensions list to set option values.

Once the extension has been installed You will be able to see the web pages you have saved in Evernote and add additional pages to your Evernote archive.

Note: instructions tested with Chrome 40.0 on a Microsoft Windows system, but should apply to other versions and operating systems as well.

[/network/web/browser/chrome] permanent link

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