This article includes general tips about optimizing your site speed. However, there are a wide variety of factors that can affect the speed of your store, many of which are decisions made by the store owner or designer, and Out of the Sandbox cannot provide additional tips, assist with code changes or provide advanced support for page speed issues.
If you're experiencing slower load times on the home and collection pages, there are a few things you could do to improve performance:
Pages with a higher amount of content, such as homepages with a high section count, typically will load slower. If you feel a page is loading slowly, consider removing combining some sections.
Reduce the number of products per page
You could choose to display fewer products per page from the Customize theme > Collection page section. For newer Sections-enabled themes, you will go Customize theme, click a collection link and the ability to edit the Collection section will appear. Combining this tip with Number 3, below, often has the most significant impact on load times, especially on collection pages.
Remove third-party apps
You can see which apps you have installed under the Apps dashboard in your admin.
Please note that disabling an app on this dashboard may not completely remove the app. You may need to check with the app's documentation or support team for detailed uninstall instructions.
Unfortunately, Out of the Sandbox support cannot troubleshoot app conflicts or help you remove apps.
Disable 'quick shop'
Try disabling the Quick Shop feature from the collection pages. This can be especially helpful if your products have a large number of images, very high quality images or videos.
To disable this in Parallax 3.0+, Retina 4.0+, Mobilia 5.0+ or Responsive 6.0+ go under Sales Channels > Online Store > Themes > Customize > Theme settings > Product grid and disable the option.
In Turbo 2.0+, this setting is under Sales Channels > Online Store > Themes > Customize > Theme settings > Quick shop.
If quick shop is important to your store, you may want to consider the Turbo Shopify theme, which allows for the use of quick shop popups without sacrificing speed.
For versions of themes older than Parallax 3.0+, Retina 4.0+, Mobilia 5.0+ or Responsive 6.0+, you can disable quick shop under Sales Channels > Online Store > Themes > Customize > Collection pages.
Ensure your images are optimized
Use a free or paid image optimizer to reduce your image file sizes. Remember to try this on any banner images as well for best results.
Google PageSpeed Insights warnings
If you're seeing Google PageSpeed Insights warnings or using it for testing, there are some important points to keep in mind about this tool.
Other speed testing tool warnings
There are a wide variety of tools available that purport to test and "grade" your page speed. However, please note that many of these use different criteria to gauge your speed and therefore the results should typically be viewed more as general guidelines.
Turbo users should be aware the theme's advanced page preloading feature is not detected by most speed testing tools, including Google's.
Out of the Sandbox does not guarantee that any theme will meet any page speed tool's criteria and is unable to assist with, beyond the tips here, adjusting themes to improve page speed scores.