OpenLink Structured Data Sniffer (OSDS) 2.6.1 unleashed!
OSDS is a browser extension  that adds structured data (Microdata, JSON-LD, RDF-Turtle, and RDF-Ntriples) discovery and extraction from HTML documents to existing browsers (currently: Chrome, Opera, Vivaldi, and Firefox).
Here are some “deceptively simple” benefits that an OSDS-enhanced browser provides:
 Productive Search Engine Optimization — all the major search engines are moving towards modern algorithms based semantically-rich metadata embedded in Web Pages
 GPS-like navigation of the Web — in addition to basic link-traversal, new “Query” and “Describe” buttons provide powerful tools for navigating the Web intelligently with lots of serendipitous discoveries along the way (just follow-your-nose by clicking!)
 Read-Write operations on the Web — rather than being confined to basic tagging and bookmarking, the new “Annotate” button places you in a browser hosted editor that makes note taking about documents of interest trivial
 Local & Cloud Storage — rather than being confined to cloud storage provided by 3rd parties, you can save extracted metadata or new annotations to cloud or local storage .
Key New Features
 Nanotation sniffing — ability to sniff out RDF-Turtle (or RDF-Ntriples) statements embedded in the body of HTML docs and/or text pages
 Improved Default SPARQL Query — clicking on the “Query” button returns a page enhanced (via Natural Language Processing, Machine Learning, and Entity Extraction) for immediate Linked Data exploration
 Sniffed content download — you can download extracted data to local Turtle or JSON-LD documents (which include mounted folders from the likes of Dropbox, Google Drive, OneDrive etc..).
 https://plus.google.com/+KingsleyIdehen/posts/ebJQEyD3txU — G+ Post.