FAQ & Troubleshooting
Common questions and solutions for Fit Check theme issues.
General
How do I update the theme?
When a new version is available from the Shopify Theme Store, update Fit Check from your Shopify admin. Go to Online Store > Themes, open the update notification or version status for the theme, review the release notes if needed, then choose Add to draft themes.
Shopify copies supported theme-editor customizations into the updated draft when possible, including theme settings, section and block settings, templates, app embeds, app extensions, and wording changes. Review the updated draft before publishing it. If custom code edits cannot be included automatically, copy those changes manually or contact support.
Can I use Fit Check with Shopify Plus?
Yes. Fit Check is designed to work across Shopify storefront plans, including Shopify Plus. Plus-specific checkout, app, or platform behavior still depends on your Shopify configuration and the apps installed on your store.
Does Fit Check work with third-party apps?
Fit Check supports Shopify’s app blocks system. Apps that support app blocks are the preferred option because they can be added and managed directly in the theme editor.
Apps that use script injection are generally compatible, but behavior can depend on the individual app. If an injected app changes product forms, cart behavior, checkout-adjacent messaging, tracking, or page layout, test it on a draft theme before publishing. For app-specific conflicts, contact the app developer first and contact Fit Check support if the theme needs adjustment.
Customization
How do I change the fonts?
Go to Theme settings > Typography in the theme editor. You can set fonts for headings, subheadings, body text, display text, and alternative text independently. Each heading level (H1–H6) can also be configured with its own font slot, size, line height, letter spacing, and text case.
How do I change the colors?
Go to Theme settings > Colors in the theme editor. Configure up to 6 color schemes, then apply them to individual sections.
How do I add a new section to a page?
In the theme editor, select the page from the top dropdown, then click Add section at the bottom of the left sidebar.
Products
How do I enable variant swatches?
Variant swatches display automatically for options that have swatch values configured. In your Shopify admin, go to Products > Options and add swatch images or colors to your option values.
If swatches do not appear, confirm that your product option values have swatch colors or images assigned and that the product-card or variant-picker blocks are configured to show swatches where you expect them.
How do I add a size guide?
Add a Size guide table block to your product template in the theme editor.
If different product types need different measurements, create separate product templates, such as Jeans, Shirts, or Shoes. Customize the Size guide table on each template, then assign the matching template to products from the product’s Theme template setting in Shopify admin.
Use one template per sizing system or garment category. If every product needs unique measurements, contact support so we can recommend the cleanest setup.
Why is the selling plan picker not showing?
The selling plan picker only appears when a product has active selling plan groups (subscriptions). You need a subscriptions app installed (e.g., Shopify Subscriptions) and at least one product with a selling plan configured.
Performance
How can I improve page load speed?
- Optimize product images before uploading (compress to reasonable file sizes).
- Limit the number of sections on the homepage to what you actually need.
- Avoid using too many custom fonts — stick to the 5 font slots provided (heading, subheading, body, display, alternative).
- Use Shopify-hosted videos instead of embedded third-party players.
My images look blurry. What should I do?
Upload images at the recommended sizes listed on the Image Sizes page. For retina displays, upload at 2x the display size.
Still Need Help?
If your question is not answered here, contact our support team.