A link can do more than open a web page.
Email links
mailto: opens the visitor’s email app with your address filled in.
<a href="mailto:hello@example.com">Email the shop</a>
You can prefill a subject. Spaces must be written as %20.
<a href="mailto:hello@example.com?subject=Book%20order">Ask about an order</a>
Phone links
tel: starts a call on phones and calling apps. Use the full international number.
<a href="tel:+15550100">Call +1 555 0100</a>
Download links
The download attribute asks the browser to save the file instead of opening it.
<a href="files/reading-list.pdf" download>Download the reading list (PDF)</a>
Tell visitors what they are getting. Include the file type and, for large files, the size.
Putting your email address in plain text everywhere
Make phone numbers easy to tap
tel: link lets people call with one tap.