L-Square A browser add-on that allows you to easily measure webpages
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L-Square Tags

pixel measure ruler pixel ruler

L-Square Description

L-Square is a Firefox, Google Chrome and Safari add-on that provides rulers on webpages to help inspect windows widths of adaptive designs. L-Square puts a button on the add-on bar to toggle the rulers. L-Square is cross-platform and it works on Mac OS X, Windows and Linux.

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