Size Chart too small

Topic summary

A Shopify store owner is experiencing issues with their size chart displaying too small and with poor image quality on both desktop and mobile devices.

Initial Problem:

  • Size chart appears too small across devices
  • Image resolution is low and blurry
  • Store using BF Size Charts app with 1200x800px image (tried both SVG and PNG formats)

Solutions Provided:
Multiple users suggested adding CSS code to increase the modal width, with variations including:

  • Adding code to base.css file
  • Inserting code in theme.liquid above </head> tag
  • Using Custom CSS in Theme settings

Most common CSS solution:

.scr-modal { max-width: 1200px !important; }
.scr-modal img { width: 100%; }

Current Status:

  • Size issue partially resolved - chart now displays larger
  • Blurriness problem persists despite using high-resolution images
  • Root cause identified: BF Size Charts app automatically resizes images to 660px width, causing quality loss
  • Discussion remains open regarding how to force the third-party app to maintain original image dimensions
Summarized with AI on October 31. AI used: claude-sonnet-4-5-20250929.

Hi everyone

The size chart I currently have is appearing too small on desktop/ phone (I have inserted it as a picture):

The resolution is also low and bad. My store is www.maisonnorman.com. Anyone able to help? Thank you and best!

Looking at the site, I can see what’s happening - the chart is being restricted by some CSS and the image itself needs a quality boost. Nothing too complicated to fix!

Here’s what you need to add to your theme’s CSS:

.scr-modal {
    max-width: 1200px !important; /* Change this by any number you want it to be */
}

This should fix the sizing, but you’ll also want to internally replace that size chart image with a higher resolution version. This image should be editable somewhere in your theme or any app you are using for this.

Drop me a PM if you need a hand implementing this. I work with Shopify stores regularly and can help get this sorted quickly.

Cheers!

1 Like

Hi @moralana

You can try to follow this step
Step 1: Go to Edit code
Step 2: Find file base**.css** and add this code at the end of the file

.scr.basic {
    text-align: center !important;
}

.scr-modal {
    max-width: 1100px !important;
}

Result:

Best,

Liz

Hello @moralana Check out the solution marked as a reply here https://community.shopify.com/c/shopify-design/size-chart-increase-the-size/m-p/2936619 and I believe it should guide you in increasing the size chart in your store too.

Hi @moralana

I hope you are well. You can follow our instructions below:
1/ Shopify admin > Online store > Edit code
2/ Search for “theme.liquid” file
3/ Open the file and search for tag and add the following code above tag

Here is the code for Step 3:

{% style %} 
div.scr-modal { 
    max-width: 1100px !important; 
} 
div.scr-modal img { 
    width: 100% !important; 
} 
{% endstyle %}

If this helpful, please let us know by giving us a like and marking its as a solution. Thanks you :heart_eyes:

Hi @moralana

Please add this code to Custom CSS in Online Store > Themes > Customize > Theme settings.

.scr-modal { max-width: 1200px !important; }
.scr-modal img { width: 100%; }
1 Like

Hi Dan!

I did and the size is bigger now so thank you but the image is pretty blurry. I am using a 1200x800px (tried SVG and PNG formats) Chart through the BF Size Charts App. I set the width to 1200 px as suggested above so I am not sure why it may still be blurry. Any idea?

Cheers,

Mora Lana

1 Like

Hi JavierMiz!

I did and the size is bigger now so thank you but the image is pretty blurry. I am using a 1200x800px (tried SVG and PNG formats) Chart through the BF Size Charts App. I set the width to 1200 px as suggested above so I am not sure why it may still be blurry. Any idea?

Cheers,

Mora Lana

Hi Mora,

Are you using a 3rd party app for the size charts? I have checked the image link, and it is very small, so I guess it automatically resizes your image. Here is current image link so you can check

https://d17fzo7x83uajt.cloudfront.net/eyJidWNrZXQiOiJzaXplY2hhcnRzcmVsZW50bGVzcyIsImtleSI6InYzc2RtMS00YS5teXNob3BpZnkuY29tLzAtTWFpc29uTm9ybWFuU2l6ZUNoYXJ0MS5zdmciLCJlZGl0cyI6eyJyZXNpemUiOnsid2lkdGgiOjY2MCwiZml0IjoiY29udGFpbiJ9fX0=

Yes, I am using BF Size Charts (=name of the app).

See screenshot below. Any change to force a given size on the 3rd party app?