Will Pimblett edited this page Oct 21, 2017 · 10 revisions

The following table shows HTML tags and attributes that are known to contain URL values and their support in htmltest.

Tag / Attr HTML Support? Function
a href=url 4 Yes Yes checkLink
area href=url 4 Yes Yes checkGeneric
audio src=url 5 Yes Yes checkGeneric
base href=url 4 Yes Yes, relative only
blockquote cite=url 4 Yes Yes checkGeneric
button formaction=url 5
del cite=url 4 Yes Yes checkGeneric
DOCTYPE ~ Yes Yes checkDoctype
embed src=url 5 Yes Yes checkGeneric
form action=url 4
iframe src=url 4 Yes Yes checkGeneric
img src=url 4 Yes Yes checkImg
img srcset=url1 res1 url2 res2 5 Planned Planned
img usemap=url 4 Yes Yes checkImg
input formaction=url 5
input src=url 4 Yes Yes checkGeneric
input usemap=url 4 Planned Planned
ins cite=url 4 Yes Yes checkGeneric
link href=url 4 Yes Yes checkLink
meta http-equiv="refresh" 4 Yes Yes checkMeta
object data=url 4 Yes Yes checkGeneric
object usemap=url 4 Planned Planned
q cite=url 4 Yes Yes checkGeneric
script src=url 4 Yes Yes checkScript
source src=url 5 Yes Yes checkGeneric
video poster=url 5 Yes Yes checkGeneric
video src=url 5 Yes Yes checkGeneric

Depreciated

The following tag/attribute combinations are known but are depreciated in HTML5 and are therefore unsupported in htmltest.

  • applet archive=url
  • applet codebase=url
  • body background=url
  • frame longdesc=url
  • frame href=url
  • head profile=url
  • iframe longdesc=url
  • img longdesc=url
  • object archive=url
  • object classid=url
  • object codebase=url
  • command icon=url
  • html manifest=url
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