Quickly show formatted JSON in a floating box when selecting JSON text
Users
16
+3 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
3
0 in 30 days
Store rank
#162K
#135K among extensions
Version
1.0.3
updated 25 Sep 2025
Users
monthly, 13 months
Latest, 16 Oct 2026:16 usersMove the mouse over the chart for any month
Ratings count
monthly, 13 months
Latest, 16 Oct 2026:3 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 JSON Quick Preview
JSON Quick Preview – Floating JSON Formatter
Tired of copying JSON into another tool just to read it?
JSON Previewer makes it effortless by showing a floating, formatted JSON box whenever you select valid JSON text on any webpage.
✨ Features
📌 Instant JSON Detection – Automatically detects and formats JSON when you select it.
🎨 Syntax Highlighting – Clear colors for keys, strings, numbers, booleans, and null values.
📦 Floating Preview Box – Resizable and draggable so you can move it anywhere on your screen.
💾 Position & Size Memory – Remembers your last box size and location across selections.
📋 One-Click Copy – Easily copy the formatted JSON to your clipboard.
❌ Quick Close – Close the preview box instantly when you’re done.
🔧 Use Cases
- Debugging API responses in web apps.
- Inspecting raw JSON in docs, logs, or test tools.
- Quickly formatting JSON while browsing without switching tabs.
🚀 Upcoming Features (planned)
- Dark/light theme toggle.
- Expand/collapse JSON nodes for easier navigation.
- Keyboard shortcuts for opening/closing the preview.