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Top 2 extensions for blocking websites and distractions (Firefox)

  • Be more productive online by blocking distracting websites such as Facebook, Twitter, Pinterest, etc.
  • Leechblock only: Set a daily time limit for each website (ex. 10 minutes per day).
  • Leechblock only: Block websites during certain hours of the day or days of the week (ex. 9am – 5pm, weekdays).
Leechblock» Visit Completely free


Leechblock is a free add-on for the Firefox browser. It’s also the most popular extension for blocking websites in Mozilla Firefox.

Leechblock offers a lot of options for customizing the way you block websites. For a detailed look at how you can implement Leachblock, check out their list of usage examples.

One of the best features is the ability to “prevent access to options while sites are blocked.” This stops you from going into the options menu and unblocking the sites you want to visit.

Completely free
BlockSite» Visit Completely free


BlockSite is a free add-on for Firefox.

BlockSite is simple, yet effective. Some might find its simplicity easier to use, others may prefer the more advanced options offered by Leechblock.

Completely free

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