PerfectPixel by WellDoneCode

Add-on for web developers and markup designers. Official Opera version of PerfectPixel for Chrome with 170 000+ active users

This add-on allows developers to put a semi-transparent image overlay over the top of the developed HTML and perform per pixel comparison between them.

--> Add-on is AD supported. Ads are injected into PerfectPixel panel only, no any injections into websites. If you wish to disable ads please check "Disable ads" checkbox in add-on preferences

--> Add-on tracks anonymized usage information of PerfectPixel panel UI with help of Google Analytics and Yandex.Metrika, to help us improve user experience. If you wish to disable tracking please uncheck «Send anonymous statistics to developers» checkbox in add-on preferences

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Please send bug reports and ideas for future versions to:
support@welldonecode.com
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Usage video:
http://www.youtube.com/watch?v=s9r9HlL-ShM

Features:
* No image size restrictions
* Multiple overlays support
* Inversion and scaling support
* Separate overlays for each website
* Overlays are saved between browsing sessions
* Minimalistic easy-to-use UI
* Keyboard arrow keys and mousewheel support

Tips:
* Double-click on header logo to expand/collapse main window

Shortcuts: http://www.welldonecode.com/perfectpixel/shortcuts/