Section of the spec this relates to: https://html.spec.whatwg.org/multipage/webappapis.html#safelisted-scheme

Description of problem:

The Payto scheme is described in RFC 8905 but not adapted in the safe listed scheme list. To support this standard it will be great to adapt it.

Solution:

Add payto to the safe listed scheme list, this will mean user-agents will no longer throw a "SecurityError" DOMException.

This is the change I would like to make:

> bitcoin
> ftp
> ftps
> geo
> im
> irc
> ircs
> magnet
> mailto
> matrix
> mms
> news
> nntp
> openpgp4fpr
+ > payto
> sftp
> sip
> sms
> smsto
> ssh
> tel
> urn
> webcal
> wtai
> xmpp