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JSON Viewer
Browser ExtensionsA browser extension that formats, validates, and syntax-highlights JSON in the browser with collapsible trees.
freeextension
BrowserBackendFree
A browser extension that instantly reveals the technologies powering any website you visit.
Wappalyzer turns every website into a tech stack you can inspect. Visit a site and the extension identifies the frameworks, CMS, analytics, and infrastructure behind it — React or Vue, WordPress or Next.js, Cloudflare or AWS. It's the competitive-research tool developers reach for when they want to know how something is built. The data can also be searched through its web app for wider market research. The extension is free and lightweight, and for web developers it turns everyday browsing into a running lesson in architecture.
A browser extension that formats, validates, and syntax-highlights JSON in the browser with collapsible trees.
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