JSON Viewer Pro by Vishwajeet

Select JSON text on any page, right-click, and view it in an interactive tree or syntax-highlighted formatted view — with search, expand/collapse, and one-click copy. No data collection, no network requests.

Available on Firefox for Android™

5 (1 review)

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About this extension

View JSON instantly, right from any webpage — no copy-pasting into external tools.

Features

• Tree View: interactive hierarchical view with expand/collapse for every node
• Formatted View: syntax-highlighted JSON with line numbers
• Search: find keys and values with match-case and exact-word options, plus next/previous navigation (Ctrl+F)
• Expand All / Collapse All with one click
• Copy anything: the full formatted JSON, or click any key or value in the tree to copy just that
• Stats at a glance: item/key counts for the loaded JSON

How to use

Select JSON text on any webpage
Right-click the selection
Click "View JSON"
Explore the tree or formatted view

Privacy

No data collection, no analytics, no network requests. Your selected JSON is stored only in local extension storage on your device, just long enough to display it.

Rated 5 by 1 reviewer

Data collection: