Simple script to clean (remove) all thumbnails for sites placed at "Most visited" section of Google Chrome or Chromium new page.

clean-chrome-thumbnails.py

#!/usr/bin/env python
#
# Simple script to clean (remove) all thumbnails for sites placed at "Most
# visited" section of Google Chrome or Chromium new page.
#
# Installation
# ============
#
# Store this script somewhere in your ``$PATH`` (like ``~/bin/`` or
# ``/usr/local``).
#
# Requirements
# ============
#
# * Python 2.5 or higher
#
# Usage
# =====
#
# $ clean-chrome-thumbnails.py
#

import os
import sqlite3
import sys


CHROME_FILE = os.path.expanduser('~/.config/google-chrome/Default/Top Sites')
CHROMIUM_FILE = CHROME_FILE.replace('google-chrome', 'chromium')


def clean_thumbnails(filename):
    """
    Connect to sqlite3 database where Google Chrome or Chromium store
    information about most visited sites and blanks all ``thumbnail`` fields
    in ``thumbnails`` table.
    """
    if not os.path.isfile(filename):
        return

    name = filename.split(os.path.sep)[-3].replace('-', ' ').title()
    print('Clean thumbnails of Most Visited Sites for %s.') % name

    conn = sqlite3.connect(filename)
    sql = 'UPDATE thumbnails SET thumbnail = null;'

    cursor = conn.cursor()
    cursor.execute(sql)

    conn.commit()
    cursor.close()

    print('All OK!')


def main():
    """
    Run clean thumbnails function only if Google Chrome or Chromium top
    sites database found at disk.
    """
    if not os.path.isfile(CHROME_FILE) and not os.path.isfile(CHROMIUM_FILE):
        print('Looks like you have not Google Chrome or Chromium installed ' \
              'on your machine.')
        sys.exit(1)

    clean_thumbnails(CHROME_FILE)
    clean_thumbnails(CHROMIUM_FILE)


if __name__ == '__main__':
    main()