iPhone-style phone number hyperlinks in Firefox [Mac, Win, Linux]

One thing that grabs people’s attention when they get an iPhone is that phone numbers on websites automatically become hyperlinks. Click on a number, and the iPhone asks you if you want to call that number.
Firefox on your computer has this same ability! You can make Firefox recognize phone numbers and call them up using your favorite VOIP app– I use Skype. Ready to begin? Let’s go!


Choose a VOIP (voice over internet) application. Skype is a good choice because they have a desktop app for Mac, Windows, and Linux. Many other VOIP services I can think of (Jajah, Gizmo) work in a browser, so I don’t know how well they will work. You will see why in a minute.


Open the Preferences panel in Firefox. Go to the Applications tab.



Search for “callto”


Choose Skype (or your favorite VOIP app) to handle all callto links.

Use Skype

Voila! You’re done! Now telephone numbers on the sites you surf will automatically become callto links!

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Written by

Ted Curran is a Learning Experience Designer/Developer for Autodesk. He is committed to empowering educators and learners to create transformational change through effective pedagogy and technology integration. You can follow Ted on Mastodon, LinkedIn or learn more at my 'About" page. These thoughts are my own.

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