Firefox to lose Site Specific Browser (SSB) feature

A year back, we reported Firefox allows to launch a website as Site Specific Browser(SSB), Mozilla later, provided an option in Page Action Menu to add and run sites in App Mode. This resembles the way you install and use apps or Progressive Web Apps in Chrome and Edge. Mozilla is planning to remove the SSB soon from Firefox which never appeared in UI by default in stable or pre-release versions.

Mozilla to remove SSB from Firefox

If you want to try out the feature in Firefox before it was gone

  1. Launch Firefox browser
  2. Visit about: config
  3. Search for ssb and change the following preference value to “true”.
  4. “browser.ssb.enabled”
  5. Restart Firefox
  6. Visit any website in the address bar, click on the Page Action menu, and select “Use this Site in App Mode”
    Use this site in App mode option
  7. The site will open in a standalone window without toolbars of menus.
    Techdows running in Firefox App mode

The company cites the following reasons for removing SSB from Firefox

  • The feature is hidden behind pref in about: config
  • It has multiple bugs
  • costing time for Mozilla to triage bugs

The company’s Software Engineer Dave Townsend claims their user research found ” little to no perceived user benefit to the feature and so there’s no intent to continue development on it at this time.

“As the feature is costing us time in terms of bug triage and keeping it around is sending the wrong signal that this is a supported feature we are going to remove the feature from Firefox,”  says Townsend.

As of writing this article, the SSB pref is still present in Firefox 84, you can take it for a spin.

Are aware of Firefox’s SSB feature? Have you found it useful? What’s your reaction to its removal in Firefox? Let us know in the comments below.

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Venkat Eswarlu

Venkat is an independent technology journalist and the founder of Techdows. He has been covering web browsers, Windows, and software news since 2009. His exclusive scoops on Chrome, Firefox, and Edge features have been cited by Forbes, TechCrunch, Wired, CNET, and other major publications.

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