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Inline ‑ Critical CSS logo

Inline ‑ Critical CSS

Develop by Speed Boostr

$10

/ Month

Speed up your online store by generating critical css

Eliminate render-blocking
Faster load times
Improve google ranking
11 Reviews

About Inline ‑ Critical CSS

Launched Mar 28, 2021

Categories

Built by Speed Boostr

Email :

lazify@previewx.zendesk.com

Address

366 Main Street, Suite 946, Conyngham, PA, 18219, US

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Description

Inline your Critical CSS to eliminate render-blocking resources. This will speed up your store.

With Critical CSS, the visitor gets the base styling as quickly as possible; because it’s right there in a <style> element in the document’s <head>, there’s: no extra request to the server for the stylesheet & no waiting for the requested styles to load in and render. The below-the-fold, or non-critical, styling is then loaded in the background to avoid render-blocking.

With Critical CSS, the visitor gets the base styling as quickly as possible; because it’s right there in a <style> element in the document’s <head>, there’s: no extra request to the server for the stylesheet & no waiting for the requested styles to load in and render. The below-the-fold, or non-critical, styling is then loaded in the background to avoid render-blocking. more
  • Your website will load faster, especially for first time users.
  • A faster load time will increase your conversation rate.
  • Rank higher in Google with a faster loading site.

Pros

  • Speed up your online store by generating critical CSS
  • Visitor gets the base styling as quickly as possible with inline styles
  • Eliminates extra request to the server for the stylesheet
  • Reduces render-blocking by loading below-the-fold styling in the background
  • Faster load time, especially for first-time users
  • Increased conversion rates due to improved load times
  • Higher Google rankings with a faster loading site

Cons

  • Requires technical knowledge to implement correctly
  • May necessitate frequent manual updates to keep styles current
  • Potential for issues with dynamic or heavily JavaScript-dependent content
  • Additional inline styling can increase HTML file size
  • Limited flexibility for sites with complex or numerous stylesheets

Top Helpful Reviews

Bs Multimarcas

Feb 08, 2025  on Shopify

Não funciona … Fiquei semanas esperando correção pelo suporte e sem retorno agradável .. Não indicado

ExcellentSupply.com

Dec 30, 2024  on Shopify

KRAZY! That's all I can say. What a totally brilliant app. For a measly $10 our Pagespeed score went up >25%. How can you beat that? Try the app – you'll see. And then once you experience what we've experienced – continue to periodically rerun the app from time to time, to sort out changes that you make to your store. Possibly the best $10 investment ever!

The Fashion Gift Shop

Aug 02, 2023  on Shopify

I wouldn't say I like leaving negative reviews, but what can you do if support doesn't reply and the app that I had to pay for to try it out does not work and simply breaks the template? The support started ok, with about a 3-day wait, but they did fix one issue after reporting that the app was still not working and had removed the cart buttons. No replies from my support ticket at all. I chased them up 3 times and never heard from them again. I would avoid this app as you will lose your money by $10 and get little to no support.

Cymbal House

Dec 05, 2021  on Shopify

The app does a more measurable progress on mobile download speed increasing First Contentful Paint which was around 3.4 s on a collection page, now app installed it is about 1.3 s. Overall our Google Pagespeed score increased around 5 - 8 points for the same collection page.

Bushranger Sunglasses

Sep 05, 2021  on Shopify

Hasn't worked for me, took my Google Page Speed Score on Mobile from mid 20s to low 30s only. Unfortunately Developer said did not have time to help.

Coastal Gifts Inc

Aug 30, 2021  on Shopify

This has to to the best app in the shopify apps store to help you be successful. I will admit I am using FLEX so I had really good page load but with Critical CSS 1.32 sec loading time. Never been able to achieve that with many attempts with other themes. I think I have the right combo now. Thank you!

Skatewarehouse.co.uk

Aug 23, 2021  on Shopify

"Instant pagespeed increase for $10... yeah right?!" That's exactly what I said when I saw this app but thought I'd give it a go anyway, SO GLAD I DID! Having spent a few days trying to boost the speed of our store and only getting marginal gains my research lead me to this app. The install was super easy and instantly flagged up some unseen errors in my CSS (blame my template creators for that!), once I fixed those the app did its thing and added a snippet to the head for the critical css, I could then confidently move all the remaining stuff to the end of the body. I ran a pagespeed test before installation on the different page types and again after installation (plus cache clearing). I'm happy to report a very significant pagespeed increase across all pages! I had a few noob questions and the support was spot on and helpful. Honestly, this is a seriously good value for money app and really worth trying!

Crescent Chalice

May 07, 2021  on Shopify

I've run all possible tests while trying to change everything manually to get the site to run smoother and the changes were minor. After installing the app the performance scores went up by a LOT. Especially mobile scores. Thank you for the great app.

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