Rocket Page Speed Optimizer

Nov. 4, 2025

I've been using this app for years, and it has improved my CWV scores. The customer service has been responsive and helpful as well.

Jan. 28, 2025

I've been using Page Speed Optimizer since August 2024, so for about 6 months. I use Dawn theme and update regularly. This app works as advertised - pushing my Page Speed Insight performance score up from the 40s and 50s to the 90s across my Shopify site (blog, pages, products, homepage...). Page speed is super important for SEO and this app has positively impacted this aspect of my SEO work. The best part of the app is the customer support. Over the months I've had issues with other apps bringing my performance score down. I email Kirkland and within hours they've tweaked my implementation and solved the issues. Fast, friendly support. App works better than expected. 5 stars - definitely recommend.

Sept. 7, 2024

I have tried SEVERAL so called Page Speed tools. Some of them were very expensive! Each of the tools I've tried provided varying levels of effectiveness (from very good, to terrible). Some even broke my theme entirely. On a whim I tried this one. WOW! Our pagespeed scores have come up nicely. Not mind-blowing, but an impressive bump. We've moved from unacceptable speed levels to above average speed levels. And our Web Core Vitals are spot on now. How can something this inexpensive work so well? I haven't got a clue. But I can say this with assurance -- this app is a keeper!

Sept. 6, 2024

Amazing App, the only one that significantly reduced the LCP of my Website. The customer support is very fast and reliable. Definitely recommend!

April 18, 2023

Highly recommended, always an updated site-speed and a good Core Web Vital performance. Even if you make big changes on your site it will always take care of he optimizations again. Sometimes a couple of days later, but always it brings you back to an optimized and good score. Nice app, easy to use and also friendly and good support.

March 28, 2023

What is this sorcery? I've been through thousands of pounds trying to find someone to improve our site speed. We've gone from a site speed of 25 to 70. Insane! Well done team, you are incredible.

March 8, 2023

I don't know how, but this fkn thing works! Went from 23 to 60 in 3 days. Super easy to install, 0 hustle. I wish I could find this app earlier. Good job, guys!

March 5, 2023

i install it a few weeks ago and I did have my doubts but I have to say the site is quicker it took a few days to show up on the Shopify speed score but that has jumped and on Google, the site speed score has also shown a big leap in the positive direction so well worth the small monthly fee as far as i am concerned

July 15, 2022

I was sceptical about this app. I thought it is bs. My website speed almost doubled (according to Shopify speed score) within few days. How about that?

May 20, 2022

Just wanted to give you an update on the work you did. Last week, we were F – worse than our worst major competitor. And now we are A. We had an LCP of over 7 seconds and now we are down to half a second. The results you have had on our site are nothing short of incredible. I don’t know how you do it and I suspect you won't tell

May 13, 2022

I have tried everything. Downloading so many apps that say they improve my speed only to have my Google page pes score and Shopify score LOW! This app is a dream come true! It literally boosted my overall score on mobile AND desktop by 20 points via Google page speed AND Shopify score. Seriously amazing. Thanks guys for all you do. I’m no longer pulling out my hair!

April 8, 2022

I wish I found out about it sooner! It would have save me countless hours of time trying to find other solutions that simply did not work! This should be part of the built-in apps for every store.

Feb. 21, 2022

Just want to see a big thank you to support and Sam. I am now 72 on speed score ( was 18 ) and 99% good URL'S ( was 23% ) on Google search console. Your app is amazing, keep doing what your doing. A Very Happy Customer

Feb. 14, 2022

Great app but changed my theme, I'm sorry I lost my temper, I became frantic and upset but this was wrong of me as I know it could have been sorted out in the end. (Please give forgive me) The code changed part of my theme through another app that was installed and shopify managed to rectify the problem. I wish you all the best with the future. All apologies once again. Kind regards, Tom.

Feb. 10, 2022

YES. IS TOTAL WORKS. IT GIVE YOUR SITE MORE SPEED / BECAUSE IT PERFECTLY DEFER JS. I AM STRONGLY RECOMMEND YOU GUYS TRY THIS APP. IN FACT ITS FIRST APP THAT REALLY GROW SPEED UP. Yeah Buddy

Jan. 18, 2022

Honestly don’t understand the metrics, but my mobile speed insights rose from 37-68 and the desktop rose from 74-90 for my main page. And 26-60 + 79-98 for a secondary page I’m focusing on.

Jan. 2, 2022

Since inception, we had a speed score ranging between 17 - 20, day after day, month after month, even after minimizing images, etc. It never went above 20. Within less than 24 hours of installing Core Web Vitals Booster the score went to 27, and the following day it went to 35. Very Happy with this App!

Dec. 30, 2021

The amount this has increased my core web vitals performance is good impressive it almost seems too good to be true. I am shocked and overwhelmed with how this has shot up my performance. I just hope it will not cause conflict with any of my apps ect.

Sept. 30, 2021

I just LOVE this app! I have struggled so much with our site's Google page Speed rankings and you guys solved all this in one click! Now I can finally build the site I want with the content I want without having to worry about a "red flag" from Google everytime I add a functionality! THANK YOU! Definately worth every penny! https://shavent.store/en/

Sept. 23, 2021

I was extremely skeptical about this app and just added it to try out. But it has improved PageSpeed results but also in about 2 weeks, my page passed core web vitals assessment according to field data, I was not expecting this since most big websites even cannot pass this and encourage people to use mobile apps. I think our SEO will improve accordingly since Google weighs too much importance on user experience.