JSON Formatter
Developer Tools
Makes JSON easy to read
Users
2M
Rating
4.3
Reviews
2,085
7D Growth
0|0%
Growth signalUnknownHigh-risk permissions
JSON-LD Tester – Structured Data & Agent Tools Inspector
Inspect and test JSON-LD, Schema.org data and agent tools on any website.
Users10KCurrent public install base
Rating4.9Store average score
Reviews16Public review volume
Manifest versionV3Extension platform version
7-day growth+3KNet users gained this week
7-day growth rate+42.9%Relative weekly velocity
Preview
3 assetsJSON-LD Tester – Structured Data & Agent Tools Inspector Media preview
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7-day rating change
Start
4.88
Latest
4.88
7-day rating change
0.00
2026年7月15日2026年7月20日
Growth overview
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1-day growthGrowing
+1K+11.1%7-day growthGrowing
+3K+42.9%30-day growthGrowing
+3K+42.9%Technical snapshot
Version, languages, and crawl freshness
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Version1.0.14
ManifestV3
Size390KiB
Languages1Deutsch
Published
Store updated
Last crawled
Deutsch
Overview
Product summary
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1.0.14:
- Multi Language Support
- ch/en/de/es
1.0.13:
- Bugfix a message Error
1.0.12:
Reviews
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Store average score4.9Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average4.8Average computed only from synced review bodies below
Reviews with text9Synced review bodies
Total ratings / reviews16Chrome Web Store public rating/review count
Store average score: 4.9. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.
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Very helpful!
Simple and effective structured data tester within the browser and loaded webpage. Works with realtime changes as well, which is great if JSON-LD is loaded via a script.
A good idea, but it has issues with German umlauts (ä, ö, ü). It sends incorrectly encoded data to the test tool. The preview inside the browser looks correct, but as soon as it opens https://search.google.com/test/rich-results, the encoding is broken.
This is exactly what I was looking for. Feature request: A preview on how the found entities would look like on Google. Do you think something like that would be possible?
Works great for offline pages as well.
Just what I was looking for! It quickly shows the JSON LD on any site without the hughe query time that the Google JSON LD test tool requires. Perfect for tweaking your JSON LD!
Very usefull, save you hours.
Shows amount of json-tags on plugin icon - very useful for quick view! Click on plugin-icon and get infos on canonical-url and robots-indexing-information. Direct link to google structured-data testing tool for deeper insights. Very useful - thanks for developing Mr. Kanzler!
Thanks, very useful to provide the shortcut to the validator!