JSON Viewer Pro

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

JSON Viewer Pro - Free Visualisation Extension for JSON

"JSON Viewer Pro" is a Chrome extension that takes the JSON experience to a higher level. It beautifies API's JSON responses and represents them in an awesome tree and chart view. It allows you to traverse in-depth JSON using breadcrumbs and provide options to write custom JSON. You can personalize the extension by changing themes, adding custom CSS, and also filter by URL. It even supports import and download of JSON files, all in a cool user interface.

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Extension stats

By: https://addonise.com

Users: 200,000+

Rating: 4.74

(143)

3 new ratings

Version: 1.0.3 (Last updated: 2024-12-26)

Creation date: 2020-10-04

Permissions:

contextMenus
storage

Host permissions:

*://*/*

Size: 357.38K

Email: ra*****@gmail.com

URLs: Website

Full description: See detailed description

Ranking

# 1,268 ▲ 93

Other rankings

#22 in Developer Tools

#3 in json keyword 69

#4 in viewer keyword 74

#31 in user experience keyword 16 ▲ 2

#49 in awesome keyword 47

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Other platforms

Not available on Android

Not available on Firefox

Not available on Edge

User reviews

These summaries are automatically generated weekly using AI based on recent user reviews. Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.

Pros

Great for understanding API responses, even for beginners
Tree view and object count functionality are beneficial for development
Allows editing and beautifying JSON data
Fast and offers additional features compared to other JSON viewers
Integrates well with other development tools like SuperDev Pro

Cons

Switches to dark mode unexpectedly in multiple tabs
Theme changes aren't saved
Truncates large numbers in JSON output
Attempts to fetch a missing image, leading to 404 errors on servers
Issues with custom CSS editing not applying correctly

Most mentioned

Tree view display is highly praised
Issues with theme not being saved or switching unexpectedly
Concerns about incorrect data serialization and number truncation
General satisfaction with the beautification of JSON

User reviews

I love the ability to customize CSS but I have a bug to report: neither the light theme nor any of the custom CSS works, except on the most recently refreshed browser tab. All other tabs revert to default, and after clicking "Save changes", if the Light theme is chosen and custom CSS defined, all tabs show default dark theme with no custom CSS.

Brian Nixon, 2025-03-06

This is even beginner friendly and its very easy to use and view, format in nice style without any issues in no time simply better one!

Kasun Chanuka Fernando, 2025-03-04

我草, 遇到的最炫酷的json viewer

Penfree Tseng, 2025-03-04

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Extension safety

Risk impact

JSON Viewer Pro 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

We don't have sufficient data to confidently determine the risk likelihood of JSON Viewer Pro. Use it at your own risk.

Risk likelihood analysis details

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