See the schema.org structured data (JSON-LD and microdata) on any page in one click. Free tool from Yellowfin Development.
Users
14
+4 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#172K
#144K among extensions
Version
1.0.0
updated 9 Aug 2026
Users
monthly, 2 months
Latest, 17 Oct 2026:14 usersMove the mouse over the chart for any month
Ratings count
monthly, 2 months
Latest, 17 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Schema Inspector by Yellowfin
Most schema checkers make you copy a URL into a separate site, wait for it to load, then dig through a wall of results to find out what is actually on the page.
Schema Inspector skips that step. Click the icon and it reads the JSON-LD and microdata already sitting in the page you are looking at: what entities are declared, what type each one is, and whether the JSON is even valid. Grouped, readable, and copyable in one click.
Built for anyone who works with SEO or web development day to day - checking your own markup before it ships, auditing a client's site, or just curious what a page is telling Google about itself.
Everything happens locally in your browser. Nothing is collected, stored, or sent anywhere.
Built by Yellowfin Development, a web design and SEO company on Long Island, NY. yfdev.com
Common questions
What's the difference between JSON-LD and microdata?
Both are ways to add schema.org structured data to a page. JSON-LD sits in a single script tag, separate from the visible HTML. Microdata is spread across attributes on the actual elements. Google reads both the same way. Schema Inspector detects both.
Does this replace Google's Rich Results Test?
No. Rich Results Test validates your markup against Google's specific eligibility rules. Schema Inspector just shows you what's actually on the page, instantly, without leaving the tab. Different job, useful for different moments.
Does it work on any website?
Yes, any page you can view in Chrome. It only reads the page you're actively on, and only for the second you click the icon.
Is my data safe?
Nothing is collected, logged, or sent anywhere. Everything happens in your browser.
Growth
Window
Users
Change
Ratings
Rating
7 days
+2
+16.7%
0
0.00
30 days
+4
+40.0%
0
0.00
Chrome Web Store search rankings
Where Schema Inspector by Yellowfin appears when people search the store, with the 30 day change