Most aesthetic & customizable JSON/JSONP viewer with themes, custom search, syntax highlighting/checking & copy features.
Users
10K
0 in 30 days
Rating
4.9 / 5
unchanged in 30 days
Ratings
31
0 in 30 days
Store rank
#8,302
#7,065 among extensions
Version
1.0.3
updated 3 Aug 2026
Users
monthly, 15 months
Latest, 15 Oct 2026:10,000 usersMove the mouse over the chart for any month
Ratings count
monthly, 15 months
Latest, 15 Oct 2026:31 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 Viewer
🧩 JSON Viewer – The Ultimate JSON & JSONP Formatter for Chrome
Beautiful, blazing-fast, and fully customizable.
Visualize and format JSON like never before with 27 themes, collapsible nodes, raw/highlight toggles, and advanced editing options – all in one lightweight Chrome extension.
🔥 Why Choose JSON Viewer?
Make raw JSON readable, searchable, and stunningly presented. Whether you’re a developer, data analyst, or API tester – this is the must-have tool in your browser.
✅ Auto Detects JSON/JSONP – No need to rely on URL or headers
🎨 27 Gorgeous Built-in Themes – Choose what suits your eyes
🧩 Fully Customizable – Colors, tab size, formatting limits, line numbers, and more
📎 Collapsible Nodes – Navigate complex objects with ease
🔍 Clickable URLs & Omnibox Support – Type json + TAB to paste and preview JSON instantly
📁 Works with Local Files – Just enable permissions in the Extensions page
🔄 Scratchpad Mode – Type, paste, and format JSON in a standalone editor
🧠 Handles Big Numbers – Even beyond Number.MAX_VALUE
📊 Sort by Keys + Editable JSON – Tweak and analyze live data
⏱️ Header Options – Add timestamp and source URL to your previews
🧩 C-style Braces Option – Prefer C-style arrays? Enable it in one click
⚙️ Quick Tips
💡 Enable Incognito and Local File Access in chrome://extensions for full functionality
🛠️ Conflicts with other JSON formatters? Disable the others for best results
🔁 After updates, Chrome may reset permissions—simply recheck the access boxes if needed
🌐 Perfect for:
REST API developers
Web app testers
Front-end and back-end engineers
Anyone working with structured data in the browser
📥 Install now to transform the way you view JSON in Chrome!
Growth
Window
Users
Change
Ratings
Rating
7 days
0
+0.0%
0
0.00
30 days
0
+0.0%
0
0.00
6 months
+6,000
+150.0%
+15
+0.09
1 year
+9,381
+1515.5%
+29
−0.10
Chrome Web Store search rankings
Where JSON Viewer appears when people search the store, with the 30 day change