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  1. xpay

  2. Shopify apps

  3. Site optimization - Other

  4. Plug in Speed ‑ Maximize Speed

Plug in Speed ‑ Maximize Speed

by Plug in Useful

4.6

(24 reviews)

29/100 · Limited evidenceFree plan available
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.
View on ShopifyCompare the plansSee the scorecard
Who it’s for
Site optimization - Other
What it moves
Top line

conversion rate

What it costs
From $19/mo

free plan available · 4 tiers

How it’s supported
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

Plan fit
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
You start with

Optimize up to 40 images per month

Lossless & lossy image compression

Lite
$19/month
Adds

Optimize up to 1,000 images per month

Automatic optimization of new products

Standard
$29/month
Adds

Optimize up to 4,000 images per month

JavaScript minification and optimization

CSS minification and optimization

Premium
$39/month
Adds

Optimize up to 10,000 images per month

Listed as “Free plan available”. Plan contents change — confirm on the listing before you install.
Pricing
Free plan available
Free

Free

Free
Optimize up to 40 images per month
Lossless & lossy image compression
Lite

$19/month

Lowest paid plan
Optimize up to 1,000 images per month
Lossless & lossy image compression
Automatic optimization of new products
Standard

$29/month

Optimize up to 4,000 images per month
Lossless & lossy image compression
JavaScript minification and optimization
CSS minification and optimization
Automatic optimization of new products
Premium

$39/month

Optimize up to 10,000 images per month
Lossless & lossy image compression
JavaScript minification and optimization
CSS minification and optimization
Automatic optimization of new products
Plans as listed on the Shopify App Store. Always confirm current pricing before installing.

29

/ 100
Limited evidence
low confidence

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.





Computed from the 24 reviews we hold, with 12-month windows measured to 2026-08. This scores the public review record — it is not a review of the software itself, and a low score often means we hold little evidence rather than poor evidence.
Review history
2018–2025 · 24 reviews read
Reviews per year
20182 reviews
20197 reviews
20208 reviews
20212 reviews
20241 reviews
20254 reviews
What merchants say

4.6

24 reviews
5★71%
4★17%
3★8%
2★0%
1★4%
Developer replies
29%
of reviews get an answer
Reviewed at 12m+
6%
had used it a year when they wrote
From 24 reviews read. Typical reviewer had used the app for 10 days. Most merchants review in their first month, so this reflects when people write — not how long they stay.
Recent 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.

Developer repliedWe really appreciate your feedback! 😊 It’s great to hear that you’re enjoying the image optimization features and the flexibility to compare and roll back changes. Thanks for sharing your experience! Show more

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!

Developer repliedHi there, We just saw your wonderful review and we didn’t want another minute to pass without saying “Thank you” and to let you know how much we appreciate you taking the time to write a review for us. We sincerely appreciate your insight because it helps us build a better customer experience. Thank you so much. Best, PIU Team Show more

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.

Quick facts
At a glance
Merchant rating

4.6 / 5 · 24 reviews


New reviews, last 12 months

0


Developer replies

7 of 24 reviews


Typical reviewer had used it

10 days


Pricing

Free plan available


On the App Store since

March 26, 2018


Review history held

2018 – 2025

Integrates with
Google Lighthouse
Google PageSpeed

Categories
Site optimization - Other
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.

Run a free readiness check
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