We installed the app and were in contact with a member of their team. He noticed that we were using other plug-ins and proceeded with manual customization. Apparently, no testing was conducted after making these changes. As a result, our entire front page became non-functional, and product images failed to load. This issue cost us a full day of revenue. Completely unacceptable.

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.

It's not working even on Shopify Dawn theme... He didn't even tried to make it work. Each consequent "fix" will decrease my store speed to around 50. Even if the app doesn't work, they still charged me. The first answer was a recommendation to just uninstall the app, which say a lot about their ethics.

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!

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

As I prepare for the busy season, I'm glad I have this app take care of the speed issues. It's one less thing I have to worry bout this year.

Al principio no entendí la aplicación, pero Sam, de soporte, me la explicó. También se tomó el tiempo para optimizar todas las aplicaciones de la tienda y ayudar con el tiempo de carga. Gracias Sam.

After going through multiple sprints of speed optimization, I'm happy to say that this app is the best I've found. They even email you a link to verify the improvements on Google. I wish they worked with CSS too.

La velocidad es muy importante para los compradores en línea. Estoy feliz de haber encontrado esta aplicación a tiempo. Ayudó con la velocidad. Desearía que hubiera una calidad de soporte similar en todas las demás aplicaciones que tengo.

Saw this app recommended on facebook and thought I'd give it a try. Install takes a few minutes and It's easy to use. I didn't understand the setting page, but app support look care of it. I wish they have a way to apply the fixes to a backup theme for testing.

I've been using this app for a few days now and I've already seen a noticeable improvement in my site's speed. I am happy with the results and would recommend it to anyone.

I got a 15 point bump in page speed just by installing this app. I think it can help me improve my SEO and get a faster page in the long run.

App works as advertised. I saw LCP and FCP improve immediately after installing. Store backend seems faster too.

When you get the dreaded email from google about your site being slow, this is the tool you need. It identified which apps were causing the issues and fixed them for me. Didn't have to change my theme and anything. Just installed the app and it fixed everything.

Esta aplicación ha manejado con bastante facilidad algo tan crítico como Core Web Vitals con solo 5 minutos de mi tiempo. Es reconfortante saber que hay un desarrollador disponible vigilando mi sitio.

from last 3 months no reply from support , i think their app project is dead now , because no reply ...i am uninstalling app today

Hello, We eagerly installed this application with high hopes. We made all the adjustments, but apart from a 1-2 point improvement on our website, there hasn't been much progress. We've been trying to reach the support team for two days now, opening tickets through the support section and sending emails to their addresses, but we haven't received any response or assistance whatsoever. Frankly, when I read the reviews, it doesn't seem like this at all. Either the reviews are fake, or they no longer care about this application. In short, the application is not functioning, and moreover, you can never reach the support section.

Great App. Had struggled for a long time to increase site speed. Had wasted money on expert developers with no results at all. And this app did the magic. Increased the site speed by 20 points in 3 days. Easy to install, very few clicks and voila the results are visible. Higly recommended.

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.