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Shopify apps
Site optimization - Other
Plug in Speed ‑ Maximize Speed
Plug in Speed ‑ Maximize Speed
by Plug in Useful
4.6
(24 reviews)
Best suited for stores using Google Lighthouse and Google PageSpeed, which it integrates with and willing to start free and move to $19/mo.
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. 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. more 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
Copy from the Shopify App Store listing, unedited.Site optimization - Other
Top line
conversion rate
From $19/mo
free plan available · 4 tiers
29/100
Limited evidence · from 24 reviews
What it does
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
What each step up actually buys you
This developer's plans are separated by features, not by how big your store is — so there is no volume that picks a tier for you. Here is what each one adds over the one below it.
Free
Free
Optimize up to 40 images per month
Lossless & lossy image compression
Lite
$19/month
Optimize up to 1,000 images per month
Automatic optimization of new products
Standard
$29/month
Optimize up to 4,000 images per month
JavaScript minification and optimization
CSS minification and optimization
Premium
$39/month
Optimize up to 10,000 images per month
Pricing
Free
$19/month
$29/month
$39/month
29
/ 100Limited evidence
Scored on 24 merchant reviews we hold for Plug in Speed ‑ Maximize Speed, across five checks. Every figure is computed from those reviews — expand any row to see the counts behind it.
Review history
2018–2025 · 24 reviews read| 2018 | 2 reviews |
|---|---|
| 2019 | 7 reviews |
| 2020 | 8 reviews |
| 2021 | 2 reviews |
| 2024 | 1 reviews |
| 2025 | 4 reviews |
What merchants say
4.6
29%
of reviews get an answer6%
had used it a year when they wroteRecent merchant reviews
The newest 8 of 24. Open one to read it in full, with the developer's reply where there is one.
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.
My speed report were not good after installing the app. I contacted them, they optimized the code and communicated ways of improving the speed. Very good customer service!
The app is super simple to use. I always like super simple but the main issue for me was that it didn't really do anything for my store. I measured my site speed using a couple of tools before installing the app, and then measured again once the app had finished completing the optimizations and the needle hardly moved. The app developer reached out to me to say they will look into it to see if something custom can be done but this was taking time so I decided to delete the app as I didn't want to pay for something that didn't work. It is an expensive app at $50 CAD per month each month but I can get over the price if I get some quality results. But this wasn't the case for me. Maybe it will work for you.
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!
We tried this app to speed up our store. Installing the app was simple and required just a bit of time waiting while the Plug In Speed servers optimised the scripts and styling files contained on our site. Once installed, our page was working as expected without any glitches. However, we decided we don't need the app at this time and uninstalled it. Due to the limitations of the Shopify platform, some files/code was still remaining from the installation process. This is not a fault of Plug In Speed, however, as I have seen this happen with other apps as well. Daniel from the support team was quick and ready to help in cleaning up our installation, even though we weren't an active customer. Awesome service, I would recommend your app to other Shopify users and will remember you for the future!
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
I installed this app to increase site speed and also for google, it did some good stuff for my site and got a performance increase, It won't solve all your problems but its a great start. I was paying for a seperate image optimizer, but this is included here as well as other optimizations so all in all worth the money.
After the initial optimizations were run on our site it was only slightly faster, but with the follow-up support we got from the Plug in Speed staff we were able to work through some issues that really got our site humming!
Plug in Speed ‑ Maximize Speed FAQ
Answered from this app's own listing and its full review record.
Best suited for stores using Google Lighthouse and Google PageSpeed, which it integrates with and willing to start free and move to $19/mo.
There is a free plan, paid plans start at $19/month, and run to $39/month across 4 published tiers. Prices are as listed on the Shopify App Store and can change — confirm before installing.
Plug in Speed ‑ Maximize Speed's plans are separated by features rather than by store size — none of the tiers is capped on a volume you could state up front. Compare what each step adds over the one below it rather than trying to size yourself into a tier.
On our scorecard Plug in Speed ‑ Maximize Speed rates 29 out of 100 — limited evidence — read from 24 merchant reviews. The developer has published replies to 7 of 24 reviews. The score reflects what the review record shows, nothing more.
24 merchants have reviewed Plug in Speed ‑ Maximize Speed, averaging 4.6 out of 5. We hold the review history from 2018 to 2025, which is what the year-by-year chart on this page is built from.
At a glance
4.6 / 5 · 24 reviews
0
7 of 24 reviews
10 days
Free plan available
March 26, 2018
2018 – 2025
Will AI shoppers find this store?
Apps like this one convert the traffic you already have. Getting recommended by ChatGPT and Perplexity is a separate problem.
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