LoyaltyHarbour Image Optimizer

It does the job! I use it to compress images on our website in order to make the page loading speed faster.

Amazing! The app itself works as it should with little effort on your part besides clicking a few buttons and letting the app do the work.
I am more amazed with the help I received when trying to setup a new theme. The homepage was loading EXTREMELY slow. So, I contacted the support email as I thought to have the images optimized and this would speed things up. When I received an email back they offered to optimize the images manually. After optimizing the images they found that the slow loading speeds was not the images. They offered look into the theme and found the problem after doing multiple checks! I had contacted Shopify Support, the theme developer, the theme 3rd party designer I contracted and apps that I thought could be causing the issue. This app was the only company/person that looked into the issue and took the time to look into and help me fix it.

Very efficient & a real time saver

https://www.bkrdesigns.com

Very easy to install and use immediately! It literally cut my images sizes by 50%+ without any visible loss of image quality.

I see a little low quality after compression

This app is great. It makes our page load times much faster. Plus its so easy to use.

Hands down this application is a must have...optimized everyone of our images that we had optimized already and brought the overall site image size down 32% in 5 minutes...that's amazing.

very easy to use and very cheap compared to others. thank you!

Excellent App, Quick, Easy to Use and support is fast and extremely helpful! thank you!

I saved 192 megs on 528 images... 72%!. The app made it easy to do and it took a minimal amount of time to perform the task. ALSO, and importantly, contrary to another review, NO ALT TEXT WAS REMOVED. The app did not affect anything in the Alt Text or SEO. Last, the support staff contacted me immediately with my initial inquiries on operation, etc.

The app also clearly allows you to RESTORE, View Details, Compare File Size...AND even compare the visual difference in files - ALL WITH A SIMPLE CLICK OF A BUTTON.

To reiterate - the support is awesome....not that you need it anyway :-)