Developer Tools

by Zulkarnain K.

50 Add-ons in this Collection

FireStorage by Yonen Labs

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Experimental

Rated 3 out of 5 stars 5 reviews

184 users

Displays the content of the HTML5 Local Storage for the current site.

JSON Inspector by Zulkarnain K.

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Experimental

Not yet rated

180 users

Inspect JSON object from a URL or entered data.
Requires either DOM Inspector or DOM Inspector Plus! [dm] extension.

Execute JS by Rudolf Noe

Rated 5 out of 5 stars 15 reviews

3,057 users

Execute JS is a enhanced JavaScript-Console, where you can comfortably enter and execute arbitrary JavaScript-Code and modify functions...

Magnifier by Girish Sharma, Paul Rouget

Rated 3 out of 5 stars 9 reviews

1,068 users

A quick restartless magnifier to debug styles and web pages.

Scratchpad Snippets by Ondřej Doněk

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Experimental

Rated 5 out of 5 stars 3 reviews

78 users

Simple Mozilla Firefox add-on that allows snippets in Scratchpad.

Extension Test by Kris Maglione

Rated 5 out of 5 stars 6 reviews

52 users

A simple add-on for extension testers, especially AMO editors and developers who plan to submit their add-ons to AMO.

Foundstone HTML5 Local Storage Explorer by Foundstone Inc.

Rated 3 out of 5 stars 14 reviews

1,514 users

Foundstone HTML5 Local Storage Explorer allows for viewing, modifying and deleting of data items stored in the browser's LocalStorage. LocalStorage is a client side storage technology introduced in HTML5.

Javascript Command by max1million

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Experimental

Rated 4 out of 5 stars 13 reviews

741 users

For writing/testing javascript on Firefox windows (extension development, etc), web pages, and bookmarklets.

JavaScript Terminal by Paul Rouget

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Experimental

Rated 4 out of 5 stars 5 reviews

1,549 users

JavaScript Terminal for Firefox.

JavaScript Object Examiner by Chuck_Baker

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Experimental

Not yet rated

402 users

Display JavaScript object methods and properties for any available scope.

Console² by Philip Chee, zeniko

Rated 5 out of 5 stars 49 reviews

3,437 users

Console² (pronounced Console Squared or Console Two) replaces the JavaScript Console with what could be the next generation Error Console. From v0.5 includes the Console Filter extension previously available separately from the Console² website.

Leak Monitor by L. David Baron

Rated 3 out of 5 stars 26 reviews

2 users

This extension pops up an alert dialog to warn chrome and extension developers about one particular type of leak. It warns when chrome windows close but leave other code pointing at their JavaScript...

Workspace by robcee

Rated 4 out of 5 stars 3 reviews

72 users

A simple editor for executing snippets of JS.

Lola by Eduardo Garcia Lopez

Rated 4 out of 5 stars 22 reviews

2 users

This tool will let you find HTML/XHTML blocks visually just by moving around the mouse pointer over the page, and modify them "on the fly" from your browser quick and easily...

View Scratchpad As HTML by Erik Vold

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Experimental

Not yet rated

5 users

View your Scratchpad content as an HTML page!
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