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JPEGmini is a patent-pending photo recompression technology, which significantly reduces the size of photographs without affecting their perceptual quality.
TinyPNG uses smart lossy compression techniques to reduce the file size of your PNG files.
Stick in the URL, get a comprehensive review of the performance of your site.
Load your site from different countries and in different browsers.
Check My Colours is a tool for checking foreground and background color combinations of all DOM elements and determining if they provide sufficient contrast when viewed by someone having color deficits.
Photoshop actions for preparing designs for iOS or Retina-display websites.
Optimisation, Photoshop, PSD