Custom Css

Custom Css

by flowzy

A tool that allows to add custom CSS code

4.7 of 5 stars(26 reviews)

About Custom Css

Get your Shopify website to look exactly how you want it to without having to delve deep into its backend to modify the source files. Here at Flowzy, we have developed a unique solution for Shopify that allows anyone with knowledge of CSS code to quickly and easily change how their Shopify website looks.

The Custom CSS app loads directly into Shopify admin as a simple editor that allows you to use CSS code to hide elements, change fonts, colors or styles on any of the pages. With this tool, any Shopify store administrator can use CSS to override the default theme style without the need to edit any of the theme files, which means you don’t risk damaging your website.

For those looking for further control over their Shopify website, the Custom CSS app offers features such as a user-friendly code editor with syntax highlighting on the fly, code folding, matching parentheses highlighting and cut, copy, and paste functionality. What is more, in our paid version you can take advantage of being able to edit any available theme on your store before you go live. This lets you test out any changes that you want to make and see exactly what they would look like to your customer. Once you are happy with how the shop looks, you can publish the changes and let the world see the magic you have created!

The installation of the Custom CSS app is super quick and doesn’t need any configuration. Once it is loaded, just open Custom CSS and make any changes to your site that you want to.


If you want to uninstall the Custom CSS app for any reason (we hope this won’t be the case!), make sure to remove all of the CSS code you have added to your website with the app before you uninstall the application.

Important update

We would like to inform you that we are ending the free version of Custom CSS service. Custom CSS becomes Custom CSS Pro. This change will take effect on November 1, 2020. All existing users get an extended 60-day free trial if they subscribe before that date!

Media gallery



Free plan


  • Apply CSS changes to the published theme of your store

Plus plan


  • Apply CSS changes to all themes of your store

  • Priority Support

* All charges are billed in USD. Recurring charges, including monthly or usage-based charges, are billed every 30 days.

4.7 of 5 stars

The overall rating reflects the current state of the app. It accounts for all app reviews but prioritizes the most recent ones.
  • 5 of 5 stars
    85% of ratings are 5 stars
  • 4 of 5 stars
    4% of ratings are 4 stars
  • 3 of 5 stars
    8% of ratings are 3 stars
  • 2 of 5 stars
    4% of ratings are 2 stars
  • 1 of 5 stars
    0% of ratings are 1 stars

Most recent reviews


This is really good. I use it to get the most out of the build in free themes and they have ended up looking nothing like the originals just with a few lines of CSS. There is no consistency checking, but as long as you know what you are doing and can spot missing "}"'s when you are updating code then you should be fine!

Developer reply

September 13, 2020

Thank you for your review. We appreciate your feedback!

Go Smart Blinds

deserve 5 stars and more,,, it's very important for all stores ..I recommended strongly .one of the best apps

Developer reply

July 19, 2020

Thanks a lot for your kind words! We really appreciate it. :)

The Nations

Really easy. Much better than trying to mess with the Custom HTML element or the .liquid files. 10/10.

Developer reply

July 3, 2020

Thank you for your review. Very glad to hear that you found our app useful!