Fontanello browser extension is the quickest way to find out what font a webpage is using.
You simply right click on the text and Fontanello will reveal the name of the typeface and some additional attributes you likely care about.
On iPhone/iPad you just select (or tap) the letters that caught you attention and choose Fontanello icon in the menu you reach from address bar.
- Intel One Mono
- 400 (normal)
- Line height
- 1.38 (27.2274px)
- Contrast ratio
- 14.08 (AAA)
- Letter spacing
- "kern", "liga", "pnum", "onum"