about:blank is an app that blocks websites in Safari . I use it to break my bad browsing habits and to stay productive.

You specify the websites that you want to block on your mac or iOS device, which are then synchronized across all your other devices.

The rules are based on regular expressions, which allows for fine control over a blocked URL. For example you can block the landing page of YouTube and still watch individual videos.

Furthermore you can block websites on the fly inside of Safari .

What’s New

Version 2021.1

Rebuilding app to work with the latest macOS version

Ratings and Reviews

3.3 out of 5
16 Ratings

16 Ratings

john4JC2 ,

How to unblock a site

It took me a while to figure out how to block sites. It’s easy to use. However, I have no idea how to unblock sites.

Developer Response ,

You can remove pages by following these steps:

- click on the url in the extension
- press enter so you are editing the text
- remove the text
- press enter again to save

The website should be removed now.

michael_wojcik ,

Great, simple way to block sites

This is a great little extension to help with staying focused!

I'm sorry to see other negative reviews, which seem to be moreso related to folks maybe not understanding how to use the extension. If anything, I'd recommend that the developer adds a short README somewhere with explicit examples of how people might construct URL patterns to block, specifically ones including Regex-specific patterns for those not familiar with that syntax.

Otherwise, a great extension!

frustrated.loyal ,

Works Fine

Not sure about these reviews saying it doesn't work. Mine works fine. You've got to click the little a:b icon, which, on safari, is at the top of the page next to the address bar. Then you can just add the sites you want to block.

App Privacy

The developer, frederik dudzik, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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