Sometimes you see a typeface on a website, poster or package that you would like to use. You have the shapes of the letters, but not the name. In my original article I pointed to WhatTheFont, a tool that searches for possible typefaces from an uploaded image.
Make a useful sample
Use an image with several clearly visible letters. Slanted, blurry or heavily decorated text is harder to identify. Crop away unrelated shapes. A word with varied letters can help: the form of an 'a', 'g' or 'R' may distinguish a typeface better than a row of straight strokes.
MyFonts' WhatTheFont still offers identification using an image or image URL. The result is a list of possible matches, not proof that you found the exact typeface. Compare distinctive letters, spacing and weights before choosing.
Finding is not licensing
Even if you find the right name, check which license your use requires. A webfont, printed material and an app may have different terms. MyFonts' licensing guidance shows why this matters before publication. That way a pleasant discovery does not become a problem later.