Please add simple SEO meta and structured data validation feature to Coach

[webhamm]

It would be nice to have a simple Coach section that covered validation of known SEO/Social media metadata and structured data.
Looking around the web I can't find a good online service that just does simple validation of metadata and some other structured data checks related to SEO and/or Social media. Maybe checking for presence of known items like canonical, title, or description. If there was JSON-LD data making sure advising on all fields to fill out maybe.

http://www.browseo.net/?url=https%3A%2F%2Fwww.cnet.com%2Fproducts%2Fapple-iphone-x%2Freview%2F

[soulgalore]

Hi @webhamm there are some simple checks today for page title and meta description (https://github.com/sitespeedio/coach/tree/master/lib/dom/bestpractice) and it would be cool to have more. Would love a PR or if you know exactly what it should be (I have no clue :))

Best
Peter