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by radley 5001 days ago
I don't get it. Why is jpegtran a must?
1 comments
CWIZO 5001 days ago
Because it strips any meta information contained in the file which reduces file size. It can also losslessly optimize the image. See here for details (I've written about it a short while ago): http://hancic.info/optimize-jpg-or-jpeg-images-automatically...
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radley 5000 days ago
It sounds great in theory but the previous example only saved < 200 bytes. That's not really optimization, that's overkill.
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CWIZO 5000 days ago
Not if you have many images on the same page. Then id adds up.
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radley 5000 days ago
If you place 1800 images on a page, you'll save enough bandwidth to now have 1801.
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jseliger 5000 days ago
In response to Radley, who said:

* It sounds great in theory but the previous example only saved < 200 bytes. That's not really optimization, that's overkill.*

That's a fair point, but if you've got a site that's getting hundreds of thousands or millions of views, or a large number of thumbnails, the one-time effort to shrink image size might be worth it.

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