How to Increase Page Speed for Shopify: A Technical Guide

by Demari Miller

Slow page load times can adversely impact the user experience and consequently, the conversion rates for your Shopify store. This blog aims to provide actionable insights to help you optimize your Shopify store for speed.

Common Issues Affecting Shopify Speed

1. **Unoptimized Images**: Large image files can severely slow down your page load times.
2. **Too Many Apps**: Every additional app adds its own set of codes, which can slow down your website.
3. **Unoptimized Code**: Excessive or poorly written CSS and JavaScript can bog down your site.


1. Image Optimization

- **Compress Images**: Tools like ImageOptim and TinyPNG can help.
- **Use Proper Formats**: Use WebP instead of JPEG or PNG for faster loading.

Code Implementation

To serve WebP images, you can modify your theme's liquid code:

{% if image.extname == '.jpg' or image.extname == '.png' %}
{{ image | img_url: 'format_webp' }}
{% else %}
{{ image | img_url }}
{% endif %}

2. App Audit

- **List Current Apps**: Review all the apps installed on your store.
- **Remove Redundant Apps**: Uninstall apps that have overlapping functionalities or are not in use.

#### Command-Line Utility for Auditing

You can use Shopify CLI to list all installed apps:

shopify app list

3. Code Minification

- **Minify CSS and JS**: Use tools like UglifyJS for JavaScript and CSSNano for CSS.

#### Code Example for Minification in Build Process

Using Gulp.js, you can minify JavaScript and CSS as follows:

const gulp = require('gulp');
const uglify = require('gulp-uglify');
const cssnano = require('gulp-cssnano');

gulp.task('minify-js', function() {
return gulp.src('src/*.js')

gulp.task('minify-css', function() {
return gulp.src('src/*.css')


Speed is not a luxury; it's a necessity for ecommerce success. By following the above-mentioned tips and diving into the code examples, you can significantly improve your Shopify store's page speed, thereby enhancing the user experience and potentially increasing sales.

For further consultations or custom speed optimization services, feel free to reach out. Remember, performance is a continuous process and should be part of your regular development workflow.

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