Quick test: Retina images vs. regular ones

There’s been a lot of debate among web professionals about whether or not it makes sense to server “retina” images to website visitors who’s devices support high pixel densities. In order to take full advantage of the sharpness of the new iPad’s screen, website owners would need to prepare their images at four times the number of pixels of normal (“72dpi”) web images.

I ran a few quick tests to see how much all those extra pixels affected overall file size. I used 130 randomly chosen jpeg images (all straight from my DSLR camera), and ran Photoshop and Irfanview batches to crop and scale them to a couple of often-used sizes. I used the same JPEG settings each time, and made sure the only difference between the images would be that the retina ones were four times sharper.
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Moving to AS3 – what the font?

Flash font properties dialog

OK, i admit it. I’m probably the only person bothered by this. In the age of broadband where mobile phones browse the web at high speed, I’m probably a dinosaur for trying to keep movie file sizes down. But still. There still are people out there who browse the web at 56 kilobits per second, waiting for minutes while a web page full of graphics is transferred to their computer by two analog modems shouting bits at each other.

That’s one reason why I decided to see if re-writing my WP-Cumulus Flash movie in Actionscript 3 would yield a smaller file. Unfortunately, the outcome was not all I had hoped it to be.
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