JSON Beautifier & Editor

Name: JSON Beautifier & Editor
Rating: 3.7143 (14 reviews)
Author: Joe Ertaba

By: Joe Ertaba

Display JSON objects by transforming them into Syntax editable highlighted HTML

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Features & Capabilities

The JSON Beautifier & Editor Chrome extension automatically detects JSON pages and transforms them into a human-readable, syntax-highlighted format. It supports editing, searching, and reorganizing JSON objects with ease. Users can switch between tree, code, and text views, making JSON readability and modification intuitive.

This powerful tool accommodates various JSON mime types, including JSONP formats, and provides both light and dark themes to adapt to your browser's settings. Features include clickable URLs in JSON, collapsible object trees, and persistence of your expanded view on refresh. It also supports beautifying local JSON files and runs efficiently without impacting browser performance.

User Growth & Download Statistics

Add-on Developer Tools Programming

By:

Daily users:

Rating:

Version:

0.6.6 Last updated: 2026-02-23

Version code:

6158583

Creation date:

2018-07-10

Risk:

Permissions:

Host permissions:

<all_urls>

Content scripts matches:

<all_urls>

Size:

498.97KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-18

Compare stats and ranking:

Ranking

# 4,088 ▼ 66

Other rankings

#10 in json keyword 61

#19 in editor keyword 28

#24 in css editor keyword 27 ▼ 1

#27 in text editor keyword 14 ▼ 1

#92 in transform keyword 8 ▼ 1

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Other platforms

JSON Beautifier and Editor (v0.6.6)

30,000 4.75

(53)

JSON Beautifier and Editor (v0.6.6)

38,736 4.50

(53)

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Joe Ertaba

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/json-beautifier-editor/

Website:

https://webextension.org/listing/json-beautifier.html

Permission Change History

2026-02-23: Version 0.6.4 → 0.6.6

Add Optional permissions: downloads

2024-08-29: Version 0.4.1 → 0.5.5

Add Host permissions: <all_urls>

Add Permissions: scripting

Remove Permissions: <all_urls>

2023-08-26: Version 0.2.2 → 0.4.1

Add Permissions: contextMenus

User Reviews

Users praise the add-on for formatting, sorting, and editing JSON, and for handling large files. However, key drawbacks include no load/save functionality (requiring copy-paste), URL replacement that hampers testing, readability issues, and potential conflicts with Firefox's built-in viewer (with calls for a dark mode).

Pros

Formats, sorts and presents JSON nicely, a clear quality-of-life improvement.
Can open very large JSON files (e.g., 18 MB) that Firefox's internal viewer can't handle.
Acts as a JSON editor in addition to beautifying, offering editing capabilities.

Cons

Cannot load or save JSON directly; editing requires copying data in and out, not a true workflow.
Replaces the original URL with a moz-extension URL, complicating testing and URL testing workflows.
Readability issues: text colors are too light, font is small, with no zoom or customization.
May conflict with Firefox's built-in JSON viewer, sometimes requiring disabling it and lacking a dark mode.

Recent reviews

by Li*****, 2026-03-31

It's too annoying that in Firefox version its replacing original URL (for example http-s://api.github.com/repos/tulios/json-viewer) with moz-extension://9d9f107e-28d1-4f57-a1b5-0913be97e86e/data/page/index.html?remote&href=https%3A%2F%2Fapi.github.com%2Frepos%2Ftulios%2Fjson-viewer I, as a developer, need to change url that i testing, but it hard to do But for chrome, and safari its haven't such "feature"

by Ih*****, 2026-03-09

by 全民*****, 2025-03-27

View all user reviews ›

Is JSON Beautifier & Editor Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

JSON Beautifier & Editor requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

JSON Beautifier & Editor is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
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