JSON Formatter Pro icon

JSON Formatter Pro

by t.mizuno27 · Developer Tools
Manifest V3 Free
View in Chrome Web Store Data as of 15 Oct 2026

Format and validate JSON with tree view, dark mode, instant syntax highlighting. Free, instant, no account needed.

Users
3
0 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#351K
#269K among extensions
Version
1.1.3
updated 14 May 2026

Users

monthly, 7 months
024Mar 2026Jul 2026Oct 2026
Latest, 15 Oct 2026: 3 usersMove the mouse over the chart for any month

Ratings count

monthly, 7 months
001Mar 2026Jul 2026Oct 2026
Latest, 15 Oct 2026: 0 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 Formatter Pro

JSON Formatter Pro automatically detects and formats JSON responses in your browser with beautiful syntax highlighting. FEATURES: Auto-Detection & Formatting - Automatically detects JSON content on any page and formats it instantly - No need to copy-paste into external tools Syntax Highlighting - Color-coded JSON with distinct colors for strings, numbers, booleans, null values, and keys - Makes large JSON payloads easy to scan and read Tree View - Collapsible/expandable tree structure for navigating complex nested JSON - Click any node to expand or collapse its children JSON Path Display - Hover over any value to see its full JSON path (e.g., $.data[0].name) - Click to copy the path to your clipboard Dark & Light Themes - Beautiful dark mode (default) and light mode - Your preference is saved automatically Customizable Indentation - Choose between 2 spaces, 4 spaces, or tab indentation - Settings persist across browser sessions 100% Local Processing - All JSON formatting happens entirely in your browser - No data is ever sent to any server - No tracking, no analytics, no data collection whatsoever PERFECT FOR: - API developers inspecting REST/GraphQL responses - QA engineers debugging API calls - Data analysts reviewing JSON datasets - Anyone who works with JSON regularly Lightweight, fast, and privacy-focused. JSON Formatter Pro is the only JSON viewer you'll ever need.

Growth

WindowUsersChangeRatingsRating
7 days−1−25.0%00.00
30 days0+0.0%00.00
6 months+3–00.00

Version history

2 versions recorded
1.1.314 May 2026
1.0.025 Mar 2026

Details

Category
Developer Tools
First seen
25 Mar 2026
Size
576 KB
Languages
en
Pricing
Free
Privacy policy
homepage-three-ochre.vercel.app
Extension ID
gkkbiafmmdpijhjnajpdhbfakaaeeblj

Permissions and risk

Minimal riskimpact 0, likelihood 2
Permissions
activeTabstoragescripting

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