Plug in Speed ‑ Maximize Speed

Improve SEO through Image Compression & Code Optimization.

by Plug in Useful · Launched: March 2018 · Free plan available.

4.6 (24) on Shopify

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Raise conversion rates with Plug in Speed: Website Image & code optimizer and page speed booster.

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About Plug in Speed ‑ Maximize Speed

For better SEO resulting in higher conversions, you need a fast-loading store with optimized code. Our automatic image optimizer set-up takes just 1 click – reduce product and other image type sizes but keeps the quality. Automatically compress & minify store theme code with CSS/JavaScript, no coding needed. Speed improvement tracking dashboard & assessment metrics e.g. average load time Reduce image size but maintain quality with lossy or lossless compression Latest Google image & code optimization, comparison tool, 30-day backups Theme-level CSS & JavaScript optimization with minification and inline Minimal ongoing maintenance, new images automatically optimized Show more Show less

Last verified: July 17, 2026 · Fresh

App details

Developer: Plug in Useful
Category: Store design
Pricing: Free plan available
Launched: March 2018
Rating: 4.6 (24) on Shopify

Key features

Optimize up to 40 images per month
Lossless & lossy image compression
Optimize up to 1,000 images per month
Automatic optimization of new products
Optimize up to 4,000 images per month

Integrations with:

Google Lighthouse, Google PageSpeed

4 plans · starts free · 14-day free trial

Free

Lite

$19/month

Standard

$29/month

Premium

$39/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

Great support and helpful features! I used Plug In Useful for a while and found its features very practical — especially for identifying SEO and site speed issues in a clear, actionable way. What really stood out was the support team: when I needed help they responded quickly and handled everything professionally. Highly recommended for anyone looking to improve their store’s performance with so...

— Geniogoods

Excellent App to Fix Charge Speed on my web. Thank you so much.

— MedSurgery Store

just started to use it, looks great

— SPika Oil

Really enjoy this app, works great to optimise images, with very little interaction. Also, provides ability to roll back any changes you may not be happy with, and also allows side by side comparison of unchanged / changed.

— Supporting Eve Lingerie

Excellent, easy to use and understand. Seems to help.

— Tougher Technology LLC

empty

— Woof & Meow

Very good software

— ZROLMA

Mike is the best he has put up with so much from me he blocked me lol JOKING Great man .. and Libby as well... Thanks for everything..

— Jeff's Female Fashion's

Excellent app. Their code really speeds up the load times of your website. Highly recommend this app. 5/5

— Blaneyzarz

The interface is sleek and straightforward to use. Customer service has been pretty great and prompt responses are always expected within the day. I'm glad I gave it a try.

— NOXEDO

Funciona muy bien, en el momento que necesite de soporte para quitarme dudas fue rapido y concreto, es muy recomendable

— MOLA VARIEDADES

I was so worried about the speed of my store, after using this app I just released. This resulted that All the images and codes need to be optimized and the app took only a few minutes. I have over 24 products.

— Blut Store

site ruim de leitura. pouca interacao. serviço ineficiente.

— ILETRON

Im trying to uninstall or cancel this app but i cant, theres no button, i don't know why, i dont want this anymore and theres no option to unsuscribe this Update: i already uninstalled this months ago, and this has been charging me being uninstalled, so clearly theres a problem, im checking now with shopify support this case, and i still dont know who's gonna reimburse me all this months charged b...

— EcoLiveChile

Worst application I've come across. Broke the site. From the support they wrote that they solved the problem, but no, it was a lie. I do not recommend installing.

— PaintAccess.com.au

I've never seen a product worse than this one, and they also want money for it. Pluginspeed broke my site: collection and search pages was broken. Because for this it configured by other app, and pluginspeed modify all files including files of others app even there is comment (Do not edit) or edition is restricted. Pluginspeed wrongly uses 'include' syntax. Same fatal issue as mentioned by others...

— Teamail

Install the application, and in my theme this error was generated on the web page: Liquid error: include usage is not allowed in this contextLiquid error: include usage is not allowed in this context I contacted them for help with their application inbox and email, and I have no response. On my website I have this error and my income is affected, users do not like the error on the website and deci...

— Minoxidil

I had to uninstall the application because it didn't respond to my problems and yet the trial period. It is inappropriate to charge a $39 fee, please cancel this fee promptly. thank you. J' ai dû désinstaller l' application car ne répond pas à mon problème et ce, pendant la période d'essai. Il est inopportun de facturer des frais de 39 dollars, Veuillez annuler ces frais rapidement svp. merci

— TIELES™

I would never recommend this app. Never worked properly, never got support to fix the issues that it was supposed to do and now I am still charged 39$ even after uninstalling the app that never worked. Do not fall for this, it is useless.

— Elly Naturals

BE CAREFUL - THIS APP WILL BREAK YOUR STORE BY ADDING MALICIOUS CODE. I downloaded this app and it is pretty much malware for your shopify site. I cant even access my theme anymore because of them.

— Nasa Depot

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