Microdata/JSON-LD sniffer
Extension Delisted
This extension is no longer available in the official store. Delisted on 2025-09-17.
This extension lets you know if there is Microdata or JSON-LD on a website an shows it to you.
Shows an icon in de addressbar when there is Microdata or JSON-LD on a page.
More information on Microdata:
https://developers.google.com/gmail/actions/reference/formats/microdata
More information on JSON-LD:
https://developers.google.com/gmail/actions/reference/formats/json-ld
Latest reviews
good
100% CPU usage too
100% CPU usage
Parses microdata as raw JSON-LD with colorized text. I like the styled formatting. That's a nice touch. Unfortunately, it seems to slow things down quite a bit on first loading (something is, anyhow). Unfortunately, I noticed one serious flaw: if there is more than one embedded object of the same type, only the first is displayed.
Often pushes the CPU to 100% when Chrome runs in the background. Seems really random. Have to kill the Google Chrome Helper process, and bubble shows up saying that the extension crashed and gives ability to reload the extension. Wish it were really more stable.
Pegs my CPU at 99-100%
It is work with only microdata. Not working with Json-Ld sniffer with javascript
Some times if does not reveal any semantic markup, but when it does its comprehensive.
doesn't detect anything, causes unexpected end of line error on any page I visit.
