This is how to block cookies and site data for certain website in Firefox browser tutorial.
In other words, you block those websites from storing cookies and site data in Firefox.
People block cookies and site data on a webpage mainly to protect their privacy, limit tracking, and reduce unwanted behavior.
This can sometimes cause websites — including those with paywalls — to behave differently.
We encourage readers to explore the legitimate ways to access paywalled content.
Block cookies and site data for specific website in Firefox
This is what you do:
Go to your Mozilla Firefox browser.
Click on "Open menu" (three horizontal lines icon) at the top right hand corner of your computer screen.
It drops down the context menu.
Click on "Settings" and a page appears.
Next click on "Privacy & Security" on the left side of the page.
Scroll down until you see "Cookies and Site Data".
Click on "Manage Exceptions..." button.
A box pops up, titled "Exceptions - Cookies and Site Data".
In the space below "Address of website", paste or type in the address of the websites.
For example, if you want to block Harvard Business Review site.
Then type: https://hbr.org
Next click on the "Block" button.
You can see Harvard Business Review domain listed under "Website" and its "Status" as "Block".
Finally click the "Save Changes" button.
That's all you need to do.
This is how block cookies and site data for specific websites in Firefox.
NOTE: Her are more tips how to block cookies and site data in Firefox.