A Case Against WordPress Plugins For Image Compression
imagely.com | Jun. 30, 2016 | 3 min readWe aren't saying image compression plugins are bad. What we're saying is why use them when you can do it offline ahead of time? Think about it.
Scott Wyden Kivowitz
Agreed. This was written for photographers who maintain their own websites.
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Kobe Ben Itamar
Great line-up of image compression services! I tend to agree and usually do offline compression, and my favorite tool to that end is TinyPNG. It seems to have a great compression algorithm, and despite the name it also handles JPEG files.
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This is all well and good if you are talking about your own site. Very few clients are going to go through the process of optimizing (or cropping, or doing anything else to) images before uploading them, and that's why plugins like ImSanity and EWWW and My Eyes Are Up Here exist.