Tel Link Builder

The phone number sits in the site footer as plain text, so on a phone the visitor has to memorize it, leave the page and type it into the dialer. A tel: link turns that into one tap with the number already filled in. The catch is the format: spaces, parentheses and dashes get in the way, and the number should be in international form so it also works for someone calling from abroad.

The cleanup is literal: everything that is not a digit or a plus sign is stripped, and if what remains does not start with a plus, one is prepended. That means the tool never guesses a country. Typing (11) 99999-0000 yields tel:+11999990000, which is not a valid number anywhere; typing +55 11 99999-0000 yields the correct tel:+5511999990000. Numbers written with a 00 international prefix also come out wrong, since the 00 stays in place — swap it for a plus sign.

What you get is the URI, not finished markup: wrap it in an anchor element with href set to the generated value and a label such as Call now. Extensions and pause characters do not survive the cleanup, so append the semicolon-ext part by hand after copying. Worth testing on desktop too: with no calling app registered for the protocol, the click does nothing visible. The link is assembled in your browser as you type.