# JSONView

> View JSON documents in the browser.

Canonical page: [https://chrome-stats.com/d/jsonview](https://chrome-stats.com/d/jsonview)

## Overview

- **ID:** `jsonview`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Ben Hollis
- **Category:** web-development
- **Daily users:** 16,628
- **Weekly downloads:** 108
- **Rating:** 4.12 / 5 (81 ratings)
- **Version:** 3.2.0
- **Last updated:** 2025-05-26
- **First published:** 2009-02-23
- **Size:** 83 KB
- **Data as of:** 2026-09-05
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/jsonview/)
- **Website:** [https://github.com/bhollis/jsonview/issues](https://github.com/bhollis/jsonview/issues)

## Description

JSONView is a handy Chrome extension that formats and highlights JSON documents directly in your browser. It transforms raw JSON text into a clean, easy-to-read layout, allowing users to collapse arrays and objects for better navigation and clarity. Even if the JSON contains errors, JSONView ensures that the raw text is still visible, making it invaluable for developers and data professionals.

While Firefox includes a built-in JSON viewer, JSONView offers a customizable alternative that enhances readability and user experience. Simply install JSONView and visit JSON document links to see formatted, highlighted JSON instantly. This tool streamlines the process of inspecting JSON data without the need for external software or online tools.

## Rankings

- #574 — Overall
- #45 — Web Development
- #9 — documentation
- #12 — json
- #21 — document
- #43 — song

## Permissions and access

### Permissions

- `webRequest`
- `storage`
- `webRequestBlocking`

### Host permissions

- `<all_urls>`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Low risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has medium user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Review summary

### Pros

- Super easy to use
- Nice, easy to read interface
- Ability to collapse/expand JSON elements

### Cons

- Recent update introduced incorrect rounding of small numbers
- Plugin makes requests on all URLs contained in JSON, leading to potential security issues

## Similar extensions and apps

- [JSONView](https://chrome-stats.com/d/jsonviewpretty) — 1 users
- [JSON Viewer Pro](https://chrome-stats.com/d/json-viewer-pro) — 1,009 users, 4.33 / 5
- [JSON\[B\] Viewer](https://chrome-stats.com/d/jsonb) — 10 users, 4.00 / 5
- [JSONView Dracula](https://chrome-stats.com/d/jsonview-dracula) — 2 users
- [JSON Viewer](https://chrome-stats.com/d/json-viewer-dev) — 36 users
- [Simple JSONView](https://chrome-stats.com/d/simple-jsonview)
- [Virtual Json Viewer](https://chrome-stats.com/d/virtual-json-viewer) — 159 users, 5.00 / 5
- [JSONViewer](https://chrome-stats.com/d/jsonviewer-new) — 2 users
- [JSON Viewer+](https://chrome-stats.com/d/json-viewer-plus) — 1 users
- [JSON Lite](https://chrome-stats.com/d/json-lite) — 9,857 users, 4.44 / 5
- [JsonDiscovery](https://chrome-stats.com/d/jsondiscovery) — 161 users, 5.00 / 5
- [JSON Viewer Pro By PatilWeb](https://chrome-stats.com/d/json-viewer-pro-by-patilweb) — 11 users, 2.00 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/jsonview)