# JSONView

> Format and visualize JSON data with a collapsible tree view.

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

## Overview

- **ID:** `jsonview-format`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Removed
- **Publisher:** JSONView
- **Version:** 1.0.0
- **Last updated:** 2026-03-17
- **First published:** 2026-03-14
- **Size:** 15 KB
- **Data as of:** 2026-05-19
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/jsonview-format/)
- **Website:** [https://haywin.ru.com/](https://haywin.ru.com/)

## Description

Format and visualize JSON data in a clean, readable interface with a collapsible tree view. Easily expand or collapse nodes, inspect nested structures, and navigate complex JSON documents, making debugging, development, and data analysis faster and more convenient.

## Permissions and access

### Permissions

- `webRequest`
- `webRequestBlocking`
- `<all_urls>`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** High 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 is not longer available in the store

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

## Similar extensions and apps

- [JSON Visual Tree](https://chrome-stats.com/d/json-visual-tree)
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- [JSONViewer](https://chrome-stats.com/d/jsonviewer-new) — 2 users
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- [PrettyJSON](https://chrome-stats.com/d/prettierjson) — 41 users
- [JSON Formatter Plus](https://chrome-stats.com/d/json-formatter-plus4)
- [JSON Formatter Plus](https://chrome-stats.com/d/json-formatter-plus1)

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