Check if HTML pages contain structured data, and output which syntax/vocabulary they use

Question

I have a list of HTTP URLs and I want to know if the corresponding HTML pages contain structured data markup, and if yes, which syntaxes and which vocabularies they use.

The tool can be anything: a desktop program (no matter which OS, but ideally for GNU/Linux), a Web app (no matter if self-hosted or hosted), a script, … I’d prefer not to have to script/program something myself, but if all needed parts are figured out and I only have to connect them or adjust something, I’m open for it.

Free/Libre software preferred, but not required. It doesn’t have to be gratis.

Syntaxes

At the minimum, the tool must detect the syntaxes

• JSON-LD (in script elements with the application/ld+json type),
• Microdata, and
• RDFa.

Bonus points for support of other embedded syntaxes (e.g., Turtle in script elements), or even for checking alternative representations (e.g., RDF/XML via content negotiation).

Vocabularies

It should output all used vocabularies (so not only looking for specific ones, like Schema.org).

It would be great if the tool outputs all specified types/classes and properties in addition.

I’m not interested in the full RDF graph or the actual data, I only want to know which elements from vocabularies get used.

Example output

It could be something like this:

URL                        Syntaxes                Vocabularies
------------------------------------------------------------------
http://example.com/foo     Microdata               Schema.org
http://example.com/bar     RDFa, JSON-LD           OGP, Schema.org
http://example.net/i       RDFa                    FOAF
http://example.org/login   Microdata               <no vocabulary>

Or with types:

URL                      Syntaxes     Types
-----------------------------------------------------------------------
http://example.com/foo   Microdata    schema:Organization, schema:Thing
http://example.net/i     RDFa         foaf:Person, foaf:Document

The output should be in a suitable format for gathering statistics.