Poor quality header images

I’m experiencing a problem where images that are high-res are being reduced in quality in my email headers, not ideal.
Has anyone else experienced this? Any work arounds?
We also have it happen on landing pages.

Email and landing page issues like this while they may seem similar may actually have different root causes. While some of this could be the result of hubspot ( Automatic image resizing on HubSpot content ), some could be a result of your code. If you would like for us to examine your code to make sure it’s not the root cause, we would need to see a link to the landing page, and a “preview in browser” link to your email.