PageSpeed & Image Optimiser

Improve site speed & Optimize Images for better SEO

by Dash Labs SIA · Launched: October 2021

2.5 (39) on Shopify Used by 1,603 Shopify stores

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Improve your Pagspeed Score by reducing unused Javascript & optimizing your images. Boost your Core Web Vitals with Flash - Pagespeed Optimizer

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About PageSpeed & Image Optimiser

Improve your PageSpeed Insights by optimising your images, reducing unused javascript and advanced optimisation techniques tailored to your store. Get more speed by installing Flash PageSpeed & image Optimisation. Our team is dedicated to offer 24/7 Support & get the best out of your Shopify Store!

Last verified: October 29, 2026 · Fresh

App details

Developer: Dash Labs SIA
Category: Store design
Pricing: Paid
Launched: October 2021
Rating: 2.5 (39) on Shopify

Key features

+ Improve SEO
+ Largest Contentful Paint
+ First Contentful Paint
+ Cumulative Layout Shifts
+ Page Speed

Integrations with:

Core Web Vitals Google Insights Javascript Pagespeed Optimizer Shopify Admin Unused Javascript page speed

1 plan · 7-day free trial

All-in-one

$19.90/month

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 98 Shopify App Store reviews

Use the arrows to read individual reviews

It works as described in the video. Simply setup and easy to use.

— Home Harmony

Saw this on Youtube and it helped me to increase my pagespeed score

— SmartStyle Accessories

Flash speed is great. Their support helped me out quickly to solve some issues I had in the beginning.

— Tiny Treads

Good app. can highly recommend it.

— Sweet Pea Styles

Works as expected. Thank you

— Snooze & Style

One of the best apps to optimise speed. Easy to use and you get results directly

— The Modern Man's Corner

Good app that also includes image optimisations. 100 are free each month, but the price per image is cheap.

— Dreamy Decor

Can’t say anything negative about it. Marc & Matiss helped me to fix a few bugs I had in the beginning, since then it works great

— Girls Glam Hub

Works well and cost effective

— AFC Distributing Co

At first I had problems using the app but the live chat was really helpful and helped me to improve my store.

— Chic Tees

The results are promising. I will keep the app installed for another few weeks and then review again.

— Pawtastic Finds

I have tested several other speed apps and this one gave the best results on pagespeed. Thank you.

— Literary Haven

You cant cancel your subscribtion watch out

— E&C Heaters

Though the app is good, i would like to point out that the support is equally bad. they dont bother to reply on emails or on chat. I had a query which is still unanswered for a year.

— Dr Vaidya's

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

— Chiedilo al Farmacista

Scam app. Charges extra with no clear understanding why.

— Mushroom Cups International

I had a very bad experience with this app. After uninstalling, I was still charged without using it. The billing system feels misleading and unfair. I tried to contact the developer, but the issue was not solved properly. Be careful before installing this app.

— JamPintar.com

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.

— Spectrum Sciences

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.

— Wacoal India

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 r...

— 💙 Blu Rose's Garden LLC 💙

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