Shopify App : WishIt: Custom CSS, Page Speed

Insert JS/CSS, hire for Theme edits, Improve Google PageSpeed

About WishIt: Custom CSS, Page Speed

Manage Your Theme Edits : Focus on your business and we will take care of managing your Shopify Store, making theme edits and fixes as per your requirement.

Improve Google PageSpeed Score : Our team of experts will help your improve your Google PageSpeed Score by eliminating Unused JS, fixing image lazyload etc.

Insert Code Snippet : Easily Add Custom CSS & JavaScript snippets to any theme. Simply copy paste the script snippet and paste into our App Theme Extension.

Add Custom CSS and Javscript

Take care of your business while we manage your theme edits for you!

How It Works

It's simple, Just create a task e.g. Increase padding between sections, our Shopify Experts would review the task and do it for you.

Sample Tasks

  • Fix Liquid Error
  • Remove unused JavaScript
  • Google Pagespeed Improvement
  • Checkout.liquid customization to add new checkout blocks (Shopify Plus)
  • Create Scrolling Announcement Bar
  • Fix Padding between elements
  • Make sections full-width
  • Change background color, font etc
  • Hide / Show elements on Mobile / Desktop
  • In Depth CRO Audit

Alternatively, you can also do it yourself, using app blocks as described below.

A super easy way to add small snippets of CSS and JavaScript to your themes.

The app uses Shopify's latest theme App Extension to implement additional global CSS & JS.

By using App Extension we make sure that the addition Custom CSS & JS are loaded immediately with the theme and does not make any external calls that would cause an impact on page load speed.

How does it work?

Within the app dashboard you can find direct links to Custom CSS and Custom JavaScript App Extension blocks.

You can add any CSS or JS to these blocks and see the preview within Shopify Theme Customizer. Don't forget to toggle the switch to enable the block to see the changes.


Feel free to write to support if you need any help with the implementation.

App Images
Launch date
August 08, 2022
App rating
Top features

Seamless workflow: use directly in Shopify admin

Up-to-date tech: works with the latest themes

Speed tested: low impact to your online store

About the Author

Matej Kontros

Matej Kontros is an E-Commerce expert and app developer with over a decade of professional experience in IT.

Matej has worked for organisations of all types and sizes, including global players, startups, and agencies. He designed, developed, and maintained complex projects.

Matej's expertise includes e-commerce, software engineering, web development, systems administration, internet security, managing projects, and building teams.

Visit his website at [ Web Linkedin ] or contact him at