Automatically Compressing Your Amazon S3 Images Using Yahoo’s Smush.it Service

[drp]

http://developer.yahoo.com/blogs/ydn/posts/2010/10/automatically-compressing-your-amazon-s3-images-using-yahoo%E2%80%99s-smush-it-service/

[simonw]

I just used Smush.it to optimise a couple of images on http://lanyrd.com/ (the logo and the background image) and it knocked a good 5KB off the page load - not too bad at all.

Our filenames are generated from the truncated SHA1 hash of the file contents, so logo.png becomes logo.16c7e567.png - which means we can safely set a far-future expires header and serve through Amazon CloudFront without worrying about changes to the images, JavaScript or CSS not propagating to the live site.

[imurray → simonw]

Thanks for the example. You can do another 1KB better than Smush did for you:

A mirror of your logo: http://homepages.inf.ed.ac.uk/imurray2/tmp/logo.16c7e567.png

A smaller file: http://homepages.inf.ed.ac.uk/imurray2/tmp/logo.squish.png

My notes on squishing images: http://homepages.inf.ed.ac.uk/imurray2/compnotes/squish_imag...

[simonw → imurray]

Neat - thanks for that.

[SabrinaDent]

Autosmush scans your S3 bucket, runs each file through Smush.it, and replaces your images with their compressed versions.

I think I'm in love.

[coderdude → SabrinaDent]

Depending on how many images you have. Doesn't that mean that it has to download each image and then re-upload them? Could be quite a cost for minimal savings if you have a large number of images to store.

Edit: I'm talking about 20,000+ product images, not the images or files associated with a layout.

[bkrausz → coderdude]

Wouldn't it be free (or close to it) if you run it on an EC2 instance?

[njharman → coderdude]

> Could be quite a cost for minimal savings if you have a large number of images

Could be, could be a large saving for minimal investment in time+money. depends on how much downloading of the images occurs normally.

[nostromo → coderdude]

> minimal savings

For me this isn't about saving money, it's about load time.

[bluesmoon → coderdude]

The blog post mentions how he fixes the issue (at least for repeated runs)

[steve19]

Is there a tool that can do this for a local directory? I have Google'd but could not find one.

[inm → steve19]

http://github.com/grosser/smusher

There's a bunch of others on Github but this is the only one I've personally used.

[steve19 → inm]

Thanks