Is JSON Viewer Safe? — Extension Safety Profile

Quick verdict: JSON Viewer earns a safety grade B, 78.2 out of 100, based on 5 of 5 dimensions.

B

78.2/100

Grade B · 5 of 5 checks


What we found

Developer Tools · Data updated

Automated safety profile from public signals (the extension's manifest & permissions, store listing, publisher, privacy policy). A full review hasn't been published yet.

What this safety grade means

JSON Viewer earns a safety grade of B (78.2/100), measured across 5 of 5 dimensions. Its strongest area is Permissions & Access (100%). The weakest is Maintenance & Ownership (10%) — what holds its grade back the most.

On the public records we can check, JSON Viewer looks broadly trustworthy. 30,000 active users/installs reported on the store. Store rating 4.7/5 from 49 user ratings. Last updated on the store 2024-03-26. This is an automated profile, not a hands-on review — so treat the grade as a starting point: open JSON Viewer's own store listing and privacy policy before installing, and weigh it against the other developer tools extensions we track below.

Safety Signals

Based on 5 of 5 safety dimensions

DimensionScoreBarSource
Publisher & Identity 60% · 4.8/8 pts Automated signals
Permissions & Access 100% · 25/25 pts Automated signals
Data & Privacy 83% · 13.2/16 pts Automated signals
Maintenance & Ownership 10% · 0.8/7.5 pts Automated signals
Community Reputation 83% · 8.3/10 pts Automated signals

In-depth safety analysis

This extension requests only the "storage" permission, which allows it to save settings or data locally on your device. For a JSON viewer, this is a minimal and expected permission scope, likely used to remember your formatting preferences. It cannot read or modify the content of websites you visit unless you explicitly interact with it on a page containing JSON.

General browser extensions like JSON viewers typically pose a low inherent risk, but a careful user should be aware that any extension that formats page content could theoretically be updated to alter how data is displayed. It is good practice to confirm that the formatting matches the raw data for sensitive information. The developer has declared that data is not sold or used for unrelated purposes, which is a positive signal, though these are self-reported claims.

The strongest dimension in the fact sheet is "Permissions & Access," reflecting the extension's minimal and appropriate permission request. The weakest is "Maintenance & Ownership," which received a very low score. This often indicates factors like a lack of a clear privacy policy, a short update history, or limited public information about the publisher, which can be a consideration for long-term reliability and support.

AI-assisted analysis of the documented signals above (permissions, store data, privacy practices) — explains what they mean and the risks typical for this category. Not a hands-on test.

What the store listing shows

JSON Viewer listing on the Chrome Web Store
JSON Viewer on the Chrome Web Store, captured 2026-06-20. View the live listing ↗

Who's Behind JSON Viewer?

  • Publisher Rongjian Zhang

Public records identify the publisher, but no individual founders or a separate registered company are named — which is what holds the Publisher & Identity score back. Less public information about who operates an extension means less you can verify about their long-term accountability.

How it compares

Among the 17 Developer Tools extensions we track, JSON Viewer scores higher on safety than 65% of them.

Computed from our own database of assessed Developer Tools extensions — updated as we track more.

Evidence on File (12)

Founder public: Publisher publicly identified: Rongjian Zhang (individual founders not separately named).
Our reports database · Captured 2026-06-19
Registered company: Rongjian Zhang.
Our reports database · Captured 2026-06-19
Data collection scope: Developer lists no user-data categories collected on the store privacy disclosure.
Data not sold: Developer declares on the Chrome Web Store that your data is not sold to third parties.
Data use limited: Developer declares data isn't used for unrelated purposes or to determine creditworthiness/lending.
Privacy policy present: No privacy policy is linked from the store listing.
High-capability permissions: Requests no high-capability permissions in its manifest.
Website access scope: Requests no host access — cannot read or change data on the websites you visit.
Manifest version: Built on Manifest V3 (the modern, more sandboxed permission model).
Last updated recency: Last updated on the store 2024-03-26.
Store rating: Store rating 4.7/5 from 49 user ratings.
Store users: 30,000 active users/installs reported on the store.

JSON Viewer FAQ

Is JSON Viewer safe?
JSON Viewer earns a safety grade of B (78.2/100) on our evidence-based assessment, based on 5 of 5 safety dimensions we could verify from public records. This is an automated profile built from public records, not a hands-on review.
Who is behind JSON Viewer?
JSON Viewer is operated by Rongjian Zhang.

Alternatives we track

Browse all browser extensions we've checked → · Best Developer Tools extensions

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Cite this profile: Is JSON Viewer safe? — ExtensionTrust. ExtensionTrust. https://extensiontrust.com/tool/json-viewer-2/

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