Tab-Blacklist-Policies

• Loads configuration from Chrome Policies
• Automatically closes tabs whose URL is blacklisted
• Tries to refocus on previous active tab

Chrome Web Store

Chrome Web Store URL

Chrome Policies: chrome://policy

Example:

Debug mode

This extension includes a debug mode, only filled if debug is enabled in policies.

The page can be reached through this URL: chrome-extension://lacjncdcelhlkaahompnkndmdeiglepn/debug.html

Linux

Places the configuration here: /etc/opt/chrome/policies/managed/tab-blacklist.json

{
  "3rdparty": {
    "extensions": {
      "lacjncdcelhlkaahompnkndmdeiglepn": {
        "Debug": false,
        "BlacklistUrls": [
          "regexp|^https?:\\/\\/(.*\\.)?mywebsite\\.com\\/get-started.*$",
          "https://test",
          "c|test"
        ]
      }
    }
  }
}

Note 1: Use double backslash in regular expression to escape a character.

Note 2: "Debug" property is optional and set to false by default.

Windows

Defines the registry key and its values following your Windows version:

• 32bits: HKLM\SOFTWARE\Policies\Google\Chrome\3rdparty\extensions\lacjncdcelhlkaahompnkndmdeiglepn\policy\BlacklistUrls
• 64bits: HKLM\SOFTWARE\WOW6432Node\Policies\Google\Chrome\3rdparty\extensions\lacjncdcelhlkaahompnkndmdeiglepn\policy\BlacklistUrls

"1"="regexp|^https?:\/\/(.*\.)?mywebsite\.com\/get-started.*$"
"2"="https://test"
"3"="c|test"

Note 1: Use simple backslash in regular expression to escape a character.

Note 2: Type of each element ("1"...): 'REG_SZ'.

Enables debug page (optional, set to false by default):

• 32bits: HKLM\SOFTWARE\Policies\Google\Chrome\3rdparty\extensions\lacjncdcelhlkaahompnkndmdeiglepn\policy
• 64bits: HKLM\SOFTWARE\WOW6432Node\Policies\Google\Chrome\3rdparty\extensions\lacjncdcelhlkaahompnkndmdeiglepn\policy

"Debug"=dword:00000001

Note 3: "Debug" type element: 'REG_DWORD' ("dword:00000000" means disabled and "dword:00000001" enabled).

Example on Windows 10, an export of the registry:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Policies\Google\Chrome\3rdparty\extensions\lacjncdcelhlkaahompnkndmdeiglepn]

[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Policies\Google\Chrome\3rdparty\extensions\lacjncdcelhlkaahompnkndmdeiglepn\policy]
"Debug"=dword:00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Policies\Google\Chrome\3rdparty\extensions\lacjncdcelhlkaahompnkndmdeiglepn\policy\BlacklistUrls]
"1"="+https://www.virtru.com/get-started/"

Supported modes

• regexp: checks if the URL matches the regular expression
• contains: searchs if the URL contains the text
• exact: searchs if the URL matches exactly the text

Format

Each entry is formed by 4 parts at maximum:

• a symbol (cannot be cumulated) (optional):
  • exclamation mark: if present, on startup, the extension will not close already matching tabs
  • plus: if present, the extension will close all matching tabs even those opened by user
• the matching mode:
  • 'regexp' or 'r' as shortcut
  • 'contains' or 'c' as shortcut
  • 'exact' or nothing
• a pipe as separator (required, may be omitted if mode is nothing (aka 'exact'))
• the text or pattern to find (required)

Examples

• Regular expressions (watch out for too vague patterns)

"regexp|^https?://.+\\.extranet\\.mydomain\\.com/.*\\.html$",
"r|^https?://.+\\.extranet\\.mydomain\\.com/.*\\.html$"

• Contains (beware of too short string)

"contains|mydomain.com",
"c|mydomain.com"

• Exact match

"exact|https://www.mydomain.com/index.html",
"https://www.mydomain.com/index.html"

• Avoid closing tab already opened before extension's startup (see exclamation mark at the beginning)

"!exact|https://www.mydomain.com/index.html",
"!https://www.mydomain.com/index.html"

• Close tab even opened by user (see plus symbol at the beginning)

"+exact|https://www.mydomain.com/index.html",
"+https://www.mydomain.com/index.html"

External documentation

How to configure policies on chromium

Thanks

Thanks to the original author Jared DuPont

License

Apache License, version 2.0

Donation

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