Javascript Object Browser

Name: Javascript Object Browser
Rating: 3.89 (27 reviews)
Author: Jonathan Duck

Browse through the objects in the default Javascript library and any local or online libraries

As of May 2026, Javascript Object Browser has 2,000 users and a 3.89/5 rating from 27 reviews in the Developer Tools category.

Jonathan Duck Developer Tools

Chrome Web Store ↗.crx

Users−33.3%

2.0K

2,000

Rating0%

3.89

27 reviews

Reviews0%

Version

1.2.1

Manifest V2

90-day change · In the last 90 days this extension lost 1.0K users.

History

2 snapshots

Tracking since May 1, 2026.

View as table

Date	Users	Rating	Reviews	Version
May 1, 2026	3.0K	3.89	27	1.2.1
May 29, 2026	3.0K	3.89	27	1.2.1
Now	2.0K	3.89	27	1.2.1

Permissions & access

Permissions: activeTabalarmsbackgroundbookmarksbrowsingDataclipboardReadclipboardWritecontentSettingscontextMenuscookiesdebuggerfileBrowserHandlerfontSettingsgeolocationhistoryidlemanagementnativeMessagingnotificationspageCapturepowerprivacyproxystoragesystem.cpusystem.displaysystem.memorysystem.storagetabCapturetabstopSitesttsttsEngineunlimitedStoragewebNavigationwebRequestwebRequestBlocking
Host access: *://*/*, chrome://favicon/

Screenshots

About

This app is great for Javascript developers, especially new ones who can't remember all the functions and properties they can use. And it works all offline.
You can list the paths Javascript libraries and it will load them and display them as well. It uses the for (in) statement to reflect on types so that it will work on any library. It also will display the contents of non-native functions in its summary panel.

You can also load JSON from files or from pasting it into the box. You can then edit the values of strings and numbers and then copy the object's JSON out again.

Because it includes permissions for all aspects of a Chrome web app. You can navigate through the Chrome Extension APIs and use the Javascript console to test them out.

If anyone knows of/has/would like to make an XML format of Javascript library documentation. I would be happy to implement them into the app to make it even more useful.

You can save the app's page to create an outside the app copy that can be used in other browsers. (I have only tested in on Firefox)

See the blog post to learn more about how to use it
http://duck-producktions.blogspot.com/2014/06/javascript-object-browser-update-120.html