I've used tel: and mailto: to link to a phone number or email but how and why would I use fax: linking in a webpage?We currently take orders via fax. What would be the flow for a customer who clicks the fax link on our webpage expecting to fax in an order? Is it even worth using? I would think that the user would need some kind of desktop faxing software which at that point most users would just give up and use email.<a href=fax:number>number</a>What's the use case for this link type?
What is the use case for Fax links in a webpage?
html;web development;email;links;mobile
Computers, mobiles and tablets can send fax's with software, its just like sending an email, it was added to rfc2086 15 years ago but it never took off and as far as I know no major browsers support href=fax: they do however support href=tel: that can be used just the same to send a fax using software. 2.3 fax URL schemeThe URL syntax is formally described as follows (the definition  reuses nonterminals from the above definition). For the basis of this   syntax, see [RFC2303] and [RFC2304].  fax-url          = fax-scheme : fax-subscriber  fax-scheme       = fax  fax-subscriber   = fax-global-phone / fax-local-phone  fax-global-phone = + base-phone-number [isdn-subaddress]                     [t33-subaddress] [post-dial]                     *(area-specifier / service-provider /                     future-extension)  fax-local-phone  = 1*(phonedigit / dtmf-digit /                     pause-character) [isdn-subaddress]                     [t33-subaddress] [post-dial]                     area-specifier                     *(area-specifier / service-provider /                     future-extension)  t33-subaddress   = ;tsub= 1*phonedigitThe fax: URL is very similar to the tel: URL. The main difference  is    that in addition to ISDN subaddresses, telefaxes also have an  another    type of subaddress, see section 2.5.8.