HAR/JSON viewer

Visualizes HTTP Archive (HAR) files opened locally or online. Also features JSON tree view for HAR and any structured JSON files.

HAR/JSON Viewer: Visualize & Optimize Web Performance

HAR/JSON Viewer is a Chrome extension, designed to visualize HTTP Archive (HAR) and structured JSON files. It allows users to open HAR & JSON files either locally or online, showcasing them in an easily digestible tree view. Additionally, it features the facility to switch between HAR, JSON tree, and the original views. A useful tool for web developers focusing on performance optimization, it requires permissions to access File URLs for working with local files.

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Extension stats

By: Savr Goryaev

Users: 10,000+

Rating: 4.00

(4)

Version: 1.5.0 (Last updated: 2021-10-28)

Creation date: 2020-09-15

Risk impact: Very low risk impact

Risk likelihood:

Low risk likelihood

Manifest version: 3

Permissions:

activeTab
scripting

Size: 136.19K

Email: sa*****@gmail.com

Ranking

# 9,376 ▲ 872

Other rankings

#6785 in Developer Tools ▼ 5 #36 in viewer keyword 69 ▼ 3 #45 in json keyword 68 ▲ 4 #206 in file keyword 48 ▼ 7

Other platforms

SVG Viewer (v1.12)

3.84

(231) 87,487+

HAR/JSON viewer (v1.3.0)

5.00

(5) 833

Not available on Edge

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Extension summary

Analyze keywords

Embedded HAR/JSON viewer. Visualizes HTTP Archive (HAR) files opened locally or online. Also features JSON tree view for HAR and any structured JSON files. Allows to switch between HAR (if available), JSON tree and plain (original) views. Note: In order to get this viewer working with local files you have to grant the respective permission: chrome://extensions -> HAR/JSON viewer -> Details -> Allow access to File URLs.

User reviews

Compare to the HAR file viewer provided by Chrome, this one is better. The visualization shows the network logs very detailed and informative. Thank author

Tấn Lộc Võ, 2023-08-08

works well. instructions could saved me some time. instructions: drop har file into chrome. open extensions and a request from this plugin would show. accept it and you will view the plugin analysis.

Leonid Beilis, 2023-05-09

It doesn't work at all. Yes, allow access to file URLs is on. Yes, the icon is visible at the top. Loading a HAR file just shows the JSON, nothing else. Clicking the icon for this does nothing. If there's something else to do, then that needs to be in the instructions for the extension. I see 2 others having the same problem in the Support pane. I guess the extension has rotted.