Chrome Web Store

8Versions

1Code reviewed

No malware found

In code review (v1.0.0)

Our reviewer read version 1.0.0 — the most recent version we have reviewed — and found no malicious behaviour. The version shown here has not been individually reviewed yet.

What our analysis found

JSON Viewer Pro, used by 300,000 people, showed no malicious code in Extension Auditor's review. It comes from a trusted publisher and was last updated in August 2026.

Analyst notes

The extension is a legitimate JSON viewer. The bundled source code shows no external network requests, no data collection, and no suspicious behavior. Broad host permissions are necessary for its stated purpose. The published manifest differs (MV3 vs bundled MV2, extra 'storage' permission), but this is likely from a newer version; the bundled code appears benign and trustworthy given the publisher's reputation and high user rating.

JSON Viewer Pro Chrome extension security report

ID: eifflpmocdbdmepbjaopkkhbfmdgijcc

Supported Languages

🇺🇸US English

Extension Info & Metadata

Status

Active

Version

1.0.7

Size

0.47 MB

Rating

4.7/5

Reviews

190

Users

300,000

Type

Extension

Updated

Aug 21, 2026

Publisher Contextual Analysis

Trusted

Author: addonise.com
Privacy: Privacy Policy
Help: Help Center
MX records exist: Yes
Domain exists: Yes
Is disposable: No
Is role-based: No
Mailbox exists: Yes
Website: Visit

Extensions

Active

Obsolete

Listed

Unlisted

Users

328,000

Screenshots & videos

Install growth

User Growth

No data available

No user growth data available for this extension

Rating Count

No data available

No rating count data available for this extension

Average Rating

No data available

No rating data available for this extension

See plans

React Flow

Internal permhash`59ed777766…`
13 malicious

57 other extensions carry this fingerprint; 13 of the cluster are known malicious.

Withheldmalicious
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+50 more

Permhash (Mandiant)`59ed777766…`
4 malicious

15 other extensions carry this fingerprint; 4 of the cluster are known malicious.

Withheldmalicious
Withheldmalicious
Withheldmalicious
Withheldmalicious
Withheldnot flagged
Withheldnot flagged
Withheldnot flagged
+8 more

Item	Type	Severity	Description
:///*	Permission	Critical	This permission grants access to all websites without restriction. Rated High because it can access any web content, monitor all web activity, and potentially steal sensitive data across all sites.
Contextual Risk Factors	Risk Factor	High	The following context increases the overall risk: • 10% increase: Early script execution enables pre-emptive content manipulation • 14% increase: Older manifest version lacks modern security controls
Early Content Script Execution	Risk Factor	Medium	This extension runs content scripts at document_start.
Older Manifest Version	Risk Factor	Medium	This extension uses Manifest Version 2
contextMenus	Permission	Low	This permission adds items to browser context menus. Rated Medium because it only modifies right-click menus without access to page content.

About this extension

A completely free extension to visualise JSON response in awesome Tree and Chart view with great user experience and options. It…

Read the publisher’s full description

A completely free extension to visualise JSON response in awesome Tree and Chart view with great user experience and options. It has lot of unique features which makes it a must have JSON formatter for beginner to advance users. ✅ Completely Free and no advertisements. Core features: ✅ Beautify JSON response from API ✅ Visual representation of JSON with Chart ✅ Depth traversing of JSON property using breadcrumbs ✅ Access or Traverse via JSON Path navigation Prompt ✅ Write custom JSON in Input area ✅ Configurable Content-Type and JSON Content Detection ✅ Ignore particular websites or URLs from rendering ✅ Import local JSON, YAML and XML files supported ✅ Download JSON file using Context Menu ✅ Dark and Light theme supported ✅ Custom CSS supported ✅ Intuitive User Interface ✅ Copy path of any property and value easily ✅ Access JSON in your console using only json keyword #Keywords: jsonFormatter, JSON, JSONChart, JSONViewer, JSONPlayground, JSONEditor, JSONView

User reviews

3.6 out of 5 · 10 most recent reviews

Text reviews

Positive

Negative

Not able to detect json when json is opened from slack using View Raw. Please add support to it. Although really great extension. Loved it.

MD Sadique·28 Sept 2026

Great viewer! Can you add path highlighting when selecting an element? Currently, the current path can be seen by copying it, but it would be convenient to see it without copying. Also, when copying the value of a collapsed element when it contains another collapsed element, the copied JSON is corrupted (it has inserts like "2 items"). I could fix this if there's an open GitHub repository. Thanks!

Sergey Meleshkin·19 Aug 2026

Really like the simplicity and the ui. but it would be great if i could change the font family. Is there any options ??

Extension files

Browse and explore files within this extension package

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No network indicators were extracted from this version.

Version	Size	Verdict	Findings	Permhash
1.0.7 Latest	0.47 MB	Not scanned	—	59ed777766c965e328491a653a1021131521c119e7c1e696285fc7d1a9804e43
1.0.2	0.34 MB	Not scanned	—	4605947b9841a51ca35b9967e41c42856c5baa4cac237e7e7834ea58c160aab1
1.0.1	0.33 MB	Not scanned	—	59ed777766c965e328491a653a1021131521c119e7c1e696285fc7d1a9804e43
1.0.0	0.33 MB	No malware found	0	59ed777766c965e328491a653a1021131521c119e7c1e696285fc7d1a9804e43
1.0.6	0.47 MB	Not scanned	—	4605947b9841a51ca35b9967e41c42856c5baa4cac237e7e7834ea58c160aab1
1.0.5	0.46 MB	Not scanned	—	4605947b9841a51ca35b9967e41c42856c5baa4cac237e7e7834ea58c160aab1
1.0.4	0.46 MB	Not scanned	—	4605947b9841a51ca35b9967e41c42856c5baa4cac237e7e7834ea58c160aab1
1.0.3	0.34 MB	Not scanned	—	4605947b9841a51ca35b9967e41c42856c5baa4cac237e7e7834ea58c160aab1

Showing 1 to 8 of 10 rows

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Code Diff

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0 changed files detected

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No malware found

What our analysis found