Today when we put one of our clients' HubSpot blog through the website grader, we saw that the blog had a page size of 13mb. The problem was that the images they we're uploading as the featured image were large images (3000x3000px+). We quickly figured out that we could resize the original image by adding and specifying a width attribute to the <img> tag. This process changed the page size from 13mb to 1.8mb.
"looked into this and it does have to do with the url structure and our ability to intercept the request before our content delivery network receives it. With how these tokens grab the url of an image, we can not manually resize them.
Using the default CDN host, http://cdn2.hubspot.net/hubfs/53/00-Blog_Thinkstock_Images/hubspot-15k.png?width=761 needs to be changed to http://cdn2.hubspot.net/hub/53/hubfs/00-Blog_Thinkstock_Images/hubspot-15k.png?width=761"
Because we are using the featured image tag, {{ content.post_list_summary_featured_image }}, we can't edit the URL to include the "/hub/"-part. Is it possible to implement that on the featured image url as a standard so we can specify the width in the url on future blogs?
We had the same problem with our blog. Sometimes the images were uploaded with huge resolutions. I noticed images that were resized had "hs-fs/hubfs" in the path vs "hubfs" In the listing template, I used this to modify the path.
based on your original example, it looks like the url structure may be different when using the default CDN domain (https://cdn2.hubspot.net). we're using our domain.