Markup Engineer's Pack

by kosei27

10 Add-ons in this Collection

FoxyProxy Standard by Eric H. Jung, groeg, others

Rated 4 out of 5 stars 340 reviews

295,605 users

FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 155 reviews

167,969 users

View HTTP headers of a page and while browsing.

YSlow by YSlow

Rated 3 out of 5 stars 192 reviews

102,910 users

YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages.
http://yslow.org is the official open source website.

View Source Chart by Jennifer Madden

Rated 5 out of 5 stars 105 reviews

14,892 users

Inspect the DOM at lightning speed.

HeadingsMap by Rumoroso

Rated 5 out of 5 stars 15 reviews

3,190 users

The extension generates a documentmap or index of any web document structured with headings and/or with sections in HTML 5. It shows the headings structure, the errors in the structure (ie. incorrect levels), and it works as HTML5 Outliner too.

Calculator by marc-marc

Rated 3 out of 5 stars 104 reviews

7,847 users

Calculator has an interface similar to Microsoft Powertoy Calculator and it offers great features like history, conversions, many functions... And it's a great open source replacement to the calculator included in Windows accessories!

Dafizilla ViewSourceWith by dafizilla

The main goal allows users to open (and in some cases edit) page source with external applications.

X-Ray by Stuart Robertson

Rated 4 out of 5 stars 18 reviews

1,537 users

See the tags on a page without viewing the sourcecode. ...

Semantic Checker by Nico Steiner

Rated 4 out of 5 stars 3 reviews

444 users

Checks your document for semantic elements and highlights them.

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