Just like Pinterest, load block colours when the page loads and then replace it with images. Better still the colours are the dominant colour calculated from the image.
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My blog
It's not rocket science to thumbnail using the FileReader API, but you can hit some pretty big performance issues if you try to then just scale an image with the src to your big file. Using Canvas we can create a thumbnail much quicker
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This site was built using a static theme. This help reduce costs, but there were several pitfalls. Most notably these themes come with loads of styles and features which you don't need. Read how I went about trying to reduce the size of the CSS and JavaScript, as well as other lessons learnt
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