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We use ad-blockers as well, you know. We gotta keep those servers running though. Did you know that we publish useful books and run friendly conferences — crafted for pros like yourself? E.g. our upcoming SmashingConf London, dedicated to all things web performance.


Jamie is a Consultant JavaScript Engineer from the UK.

Previously a Senior Engineer at BSkyB—one of the UK’s largest media organisations—he now helps companies of all shapes and sizes with their JS architecture, front-end performance, and more. He is the developer of popular image optimisation tool ImageOptim-CLI, and Tweets about all things front-end at @fold_left.

Twitter: Follow Jamie Mason on Twitter

How Optimized Are Your Images? Meet ImageOptim-CLI, A Batch Compression Tool

Exporting images for the Web from one’s favorite graphics software is something many of us have done hundreds of times. Our eyes fixate on an image’s preview, carefully adjusting the quality and optimization settings until we’ve found that sweet spot, where the file size and quality are both the best they can possibly be.

How Optimized Are Your Images? Meet ImageOptim-CLI, a Batch Compression Tool

After exporting the image — usually using a feature called “Save for the Web” — and having gone to all that care and effort, we would be forgiven for thinking that our image is in the best shape possible. That’s not always the case, of course.


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