Plug in Speed

Develop by Plug in Useful

$39-$79

/ Month

14 Days Free Trial

Improve SEO by Image Optimization, Compression & CSS.

Code minification

Size reduction

Automatic image optimizer

Compression setup

Speed improvement tracking

Google optimization

Theme-level optimization

Compression methods

About Plug in Speed

Launched Mar 25, 2018

Built by Plug in Useful

Email :

[email protected]

Address

Sharon, CT, US

Website Privacy policy FAQ Document

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Description

Raise conversion rates with Plug in Speed: Website Image & code optimizer and page speed booster.

For better SEO resulting in higher conversions, you need a fast-loading store with optimized code. Our automatic image optimizer set-up takes just 1 click – reduce product and other image type sizes but keeps the quality. Automatically compress & minify store theme code with CSS/JavaScript, no coding needed.

Speed improvement tracking dashboard & assessment metrics e.g. average load time
Reduce image size but maintain quality with lossy or lossless compression
Latest Google image & code optimization, comparison tool, 30-day backups
Theme-level CSS & JavaScript optimization with minification and inline
Minimal ongoing maintenance, new images automatically optimized

Pros

Easy to use with a 1-click automatic image optimizer setup
Reduces image sizes while maintaining quality through lossy or lossless compression
Automatically compresses and minifies store theme code (CSS/JavaScript) without needing any coding skills
Includes a speed improvement tracking dashboard and assessment metrics, eg, average load time
Latest Google image and code optimization guidelines are followed
Provides a comparison tool and 30-day backups
Minimal ongoing maintenance as new images are automatically optimized
Potential for better SEO resulting in higher conversions
Improved loading speeds for better user experience

Cons

Might require initial setup time to understand and configure properly
No detailed customization options mentioned for advanced users
Automatic optimizations may not suit all specific user needs and requirements
Limited information on support and troubleshooting for potential issues

Top Helpful Reviews

Geniogoods

Jul 10, 2025 on Shopify

Great support and helpful features! I used Plug In Useful for a while and found its features very practical — especially for identifying SEO and site speed issues in a clear, actionable way. What really stood out was the support team: when I needed help they responded quickly and handled everything professionally. Highly recommended for anyone looking to improve their store’s performance with solid customer service behind it!

Supporting Eve Lingerie

Apr 13, 2025 on Shopify

Really enjoy this app, works great to optimise images, with very little interaction. Also, provides ability to roll back any changes you may not be happy with, and also allows side by side comparison of unchanged / changed.

Jeff's Female Fashion's

Apr 24, 2024 on Shopify

Mike is the best he has put up with so much from me he blocked me lol JOKING Great man .. and Libby as well... Thanks for everything..

Blaneyzarz

Feb 27, 2024 on Shopify

Excellent app. Their code really speeds up the load times of your website. Highly recommend this app. 5/5

BlackToe Running Inc.

Sep 29, 2020 on Shopify

Great customer service. Asked about performance issues with my site and they identified the code that was causing the problem quickly.

Uprising Food, Inc.

Nov 14, 2019 on Shopify

AMAZING customer service! My store crashed and I thought it was due to the app, however, it turns out it wasn't. Regardless they went into my store's code and went file by file to get to the root cause, fixed it (way beyond their scope) and got me back up in running. Highly recommend the app and the team!

AWWALBOUTIQUE

Nov 08, 2019 on Shopify

Its definetly a must have in todays digital scenario. Does its job perfectly and we must say our load time is way way better.We are writing a review about it after using it for almost 4 months .Totally worth it

PetMax

Apr 12, 2019 on Shopify

We downloaded this app to help decrease our page load times. After running the Google mobile speed test our website was ranking slow which directly impacts search rankings. One of the tips the Google report recommended was optimizing our code and CSS files, along with optimizing images. This app does both so it seemed like a perfect solution! Right off the bat our page load times decreased and we were ranking higher than our competitors sites. This is a HUGE advantage for us and we owe it all to this app! Further, I contacted the support team later in the evening, not expecting a response until morning. Not only did they get back to me within minutes, they answered all of my questions right away! I could not be more impressed! I would give this team 10 stars if I could. Thanks for the assistance and for the great app, I would highly recommend trying it out!

WeLoveLeds

Apr 05, 2019 on Shopify

I used the app to speed the site up as we were having loading issues. It worked a treat to optimise the images, and was very easy to use. Plus, i'd had a recurring issue with the site that was unrelated to why i'd downloaded the app, yet when i mentioned it to their support people they were so helpful. They went out of their way to give me a very in depth explanation as to what needed to be done to fix the issue which i went to my developer with. Very Very Happy

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