PageSpeed & Image Optimiser

Dec. 2, 2025

ATTENZIONE! APP TRUFFA. DOPO QUALCHE MESE DI UTILIZZO INIZIANO AD ADDEBITARE COSTI IMMOTIVATI.

Sept. 5, 2025

Scam app. Charges extra with no clear understanding why.

May 29, 2025

The app did nothing to improve performance. When I attempted to uninstall, it left other apps not performing on my site (my new customer form and product reviews no longer function). Shopify confirmed it was due to code from this app screwing up those features. Now I'm left to sort that out because customer support is not responding.

May 28, 2025

Customer support is the worst. I have been trying to reach out to customer support for the past two months, but there has been no response. I have never experienced this kind of careless support from any app. I am facing cache issues, some functions are not working on some devices, and some features are visible on some devices but not on others.

May 21, 2025

Scammy and Unreliable – Avoid at All Costs! Charged my account after I uninstalled and I have tried to send messages to get help with fixing and no help and it's almost been a week. It's messing up my shopify website and other billing subscriptions. Do not download and install!!!!! Save yourself the trouble and find another app. You deserve better than shady billing practices and ignored support requests.

April 18, 2025

Company will not reply to any messages or emails. Update: Only after I left 1-star review, the company did respond with a brief message that didn't clearly answer my question, and then asked me to change my review, but has not replied to my follow up question. I am now trying to use the compress images feature, but an error pops up that I can't read. I believe it wants to ask for more money. As others have said, I also discovered this app is charging me usage charges which are not disclosed anywhere. Update #2: I changed the review from 1 to 3 stars. Someone from the app replied to me and pointed out where the additional usage charges are displayed. I don't recall ever seeing this before, but it is there now. The app did improve the speed of my store, but the extra usage charges, bugs with compressing more than 1,000 images, and limited customer service mean it's not a 5-star app.

Feb. 15, 2025

Worst customer service I have ever experienced. I have been reaching out trying to get help with numerous things since I started using the app and I have never received a response.

Jan. 16, 2025

I think no one is working on this. I was interested in purchasing the paid plan, but for 4 business days I received 0 support.

Jan. 8, 2025

I’m not going to give them a 1-star as some did because that seems petty. The app seems to work, although I’ve been trusting their analytics to tell me that. My concern is that they have "usage charges," but I have no idea what they’re for. I searched both the FAQ and documentation for "usage," but got nothing. I sent an email asking, but never got a response. I see a number of other reviews that mention this too and, for the record, I’ve checked my junk mail folders. Because of this and the general need to cut back on paid apps, I’m uninstalling

Nov. 19, 2024

Terrible support, due to no support, removed the app and it left code in the site that broke features in my store. Had Shopify support involved with the issue and they responded several days later "we refunded the customer" leaving no regard to get the code removed from my website.

Nov. 14, 2024

It does nothing for my store. I canceling before the free trail is up.

Nov. 1, 2024

Altdaten im Quellcode nach löschen der App. Das führte zu verschiedenen Shop Fehler. Es wurde unteranderem kein Favicon mehr angezeigt und andere Apps wurde im Hintergrund blockiert (z.b. Klaviyo). Damit ist man praktisch gezwungen, die App dauerhaft zu nutzen, weil es sonst zu Problemen im Shop kommt.

Oct. 7, 2024

This is a total rip-off! They billed my account with an excessive amount. streetmodestore.com Don't argue with them about this, otherwise they will cleverly bill you.

Sept. 19, 2024

It simply make all your images to fake board at the first loading, then make lazy loading to img, BUT in may cases java have failing and images not show up. page speed goes up immediately but it totally ruin the view overall. second thig: it makes 1K back links from one IP. And support is not answering at all.

Sept. 11, 2024

I have attempted to contact support repeatedly via both chat and email for several days, with no response. This level of disregard for customers is unacceptable, especially for an app that handles crucial aspects of an online store. While the app may have potential, the complete lack of support makes it unreliable for professional use. I would advise developers to drastically improve their customer service if they want to be taken seriously in the Shopify market. Unless you are willing to troubleshoot every issue yourself, I suggest looking for alternatives with more responsive customer support.

Sept. 3, 2024

"I'm extremely frustrated with Flash Speed Optimizer. As a paid subscriber, I expected my store to be fully optimized, but there's still a 30% unoptimized score on mobile. This is a serious issue since most of my visitors come from mobile, and it's directly impacting my business negatively. Despite multiple emails and chat messages, I've received zero response. This level of neglect is unacceptable. I demand immediate action to optimize my store and compensation for the damage done to my business due to their inaction. Do not trust this app if you value your business!"

Aug. 17, 2024

I never write a review, usually only if I´m disappointed. This time it is different. I´m super happy. The app works perfectly for me. from page speed 37 to 95 (I have screenshots to prove it). For me it´s a investment and 20 bucks is not cheap, but I rather pay more for something that really works. The only part I dont use is the picture compressor. Last Thing I really appreciate: no begging for reviews, no upsells. Just the app. Perfect.

Aug. 13, 2024

This developer doesn't respond to questions on slack or email. I need technical help and I have questions about usage fees. I've had the app for a little over a week now and my website speed hasn't improved. I will be cancelling this subscription before I'm hit with more usage fees.

Aug. 12, 2024

Best speed optimizer app， they provide good customer service when you encounter the problem they deserve the 5 star

May 31, 2024

The app has been very helpful. Marc helped me a lot. I must recommend this app to all of you. I wish Marc will be present when I need him.