Thunder Page Speed Optimizer

Boost pagespeed, fix slow apps, and monitor your CoreWebVitals

by Enigma Apps · Launched: May 2022 · Free plan available.

4.9 (51) on Shopify Used by 3 Shopify stores Built for Shopify

See which stores use it — by country, co-installs & competitive gaps → Unlock with Pro

Manage this app

Verify your developer profile to earn a badge and build trust for your app.

Boost website speed with Thunder's automated speed optimizing technology. Get better SEO & Sales.

Get it on Shopify →

About Thunder Page Speed Optimizer

Slow loading times, poor performance and errors result in frustrated customers, lost money, SEO and Low Conversions Rates.Thunder puts an end to slow websites with 1 click.Our fully automated technology will take care of all page elements that slow down your website without you lifting a finger!We fix apps slowing down your website, we optimize images, we make your theme lightning fast and all this and more will significantly boost your Google Page Speed Score. Massively speed your store up. Boost SEO score. Lower CPMs. Fix apps and themes that slow down your store speed score. Faster websites = Less frustrated customers = More Sales Instant "Above The Fold" loading + Predictive preloading webpage technology Image compression, LazyLoaded images, Deferral of non-essential JavaScript code Show more Show less

Last verified: July 15, 2026 · Fresh

App details

Developer: Enigma Apps
Category: Store design
Pricing: Free plan available
Launched: May 2022
Rating: 4.9 (51) on Shopify

Key features

Critical CSS
JS/CSS Minification
Predictive Link Preloading
Email Support
Image compression

Integrations with:

Core Web Vitals, Google PageSpeed Insights, Javascript, Page Speed, Pagespeed Optimizer, Shopify Admin, Speed Booster

4 plans · starts free · 7-day free trial

Free Plan

Free

Advanced

$19.99/month

Visitor Insights

$69/month

AI Agent

$199/month

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 97 Shopify App Store reviews

Use the arrows to read individual reviews

We struggled with slow page speed for long time as we use a lot of apps on our shopify store. Thunder helped us double our speed score on Page Speed Insights and now we are even passing Core Web Vitals! Highly recommend the app!

— 𝐔𝐑𝐁𝐀𝐍 𝐍𝐎𝐕𝐀𝐒

We’ve had great speed improvements to our shopify store thanks to the Thunder Page Speed optimizations. We had issues with third party apps that got resolved thanks to the app. The communication with the team is very easy and they are always happy to assist us!

— Luxivio

I like that there are constantly updates and Thunder Page Speed is constantly monitoring my website performance and autonomously doing optimizations when needed. Thanks for the great support!

— redtrinket

Thunder Page Speed really helped my shopify stores to get faster and the impact it had on our SEO efforts was visible only after few months. Now I am putting Thunder on every shopify store we open because it is really worth it knowing there is someone constantly making sure your website is as fast as possible.

— Fazimart

I’ve tested few of the top rated speed optimization apps in the shopify app store and Thunder Page Optimizer is consistently bringing me the best speed optimizations across multiple stores. The team is proactive and extremely innovative and they are constantly updating their algorithms and bringing new features. I had few third party apps really slowing my store and once I installed Thunder everyt...

— Jazeel Shop

empty

— Hotdiggidydog®

Must-have app if you care about speed and conversions. Our site performance improved almost immediately, and the team helped us optimize things we didn’t even know were slowing us down. Easy to use and great support.

— Studio Anélie

Good experience so far. It improved our site speed and helped clean up some performance issues. It’s not 100% ‘set and forget’—we needed a bit of support—but the team was quick and helpful. Overall very happy with the results.

— Anelie Cosmetics

georgi is the best

— North Wardrobe

Okay so my service earlier with them wasnt that good, but there customer staff actually contacted me and he even go 1 step ahead for optimizing the website. current i am testing the optimization, i will for sure update about it.... but for the customer Support, and the help they have done..... It was great

— ShopLovii

very good app i love it

— Wow Hub

bad support and speed of site still not good

— Mary Luxe Boutique

Theme editor stopped working after was removed. Site editor is messed badly.

— Vinusto

Sir, I did not use your app, can you clear its charges or not?

— www.trendswind.com

I can’t open the operation page all the time, and there is no reply to the email contact. There is no reply after contacting for three times in a row. Extremely bad service

— NONNICO

Upon first install the app worked as expected. The past 48 hours the app has glitched and when opened in Shopify it presents a white/blank screen with no further instructions/links or error codes. I reached out both times with no response back. I uninstalled and reinstalled the app thinking a crucial update was missed; however there was no change. App was uninstalled permanently and other venues h...

— MIRootsCreations

I hate giving poor reviews, but this app simply isn't working at all. At first I only saw a blank screen when opening the app. Ok, the app support responded quite fast to solve the issue and confirmed it was a bug on their/Shopifys side. But then the optimization page just freezed and nothing happened. I didn't see any kind of progress on the dashboard or in the history tab. And now I'm back to se...

— SPIRIT - beauty excellence

Critical css, image resize not working on my website. Not sure if prefetching works. Within the code of loading bar and therefor sort of hidden, a link to https://www.w3.org/ creates "the largest contentful element" with error, read by website speed anaylizers also as an error, somehow registers for a higher speed. The only true benefit using this app was compressing the css file and nothing more...

— Cymbal House