There's currently no direct way you can include a size chart in your shop but there *is* a workaround as follows:
​
1. Create a new page and call it "Size Chart" -
Back office > Shop Settings > Info Pages > Create new
​
2. Go to http://imgur.com and upload the Size chart image you have using the 'Computer button' on the right
​
3. Once the image is uploaded, you'll be presented with a list of option on the right hand column.
Choose the option called: " HTML Image (websites & blogs)"
Copy the HTML snippet from the text box by highlighting it and then copy.
​
4. Return to your page in your back office.
Paste the HTML code you've just copied.
​
5. Click to save change and then you're done.
​
Optional!
​
6. You can add a link from any part of your site to the page you have created.
Adding links can be done like this:
​
In future, image uploads such as this will be available directly within your SupaDupa backoffice.
Hoping this helps for now.