Images being stretched

The images look fine to me.

Screeshot

What I’m seeing in Chrome.

I see. I get that look if I make the browser size smaller. Anyway, just add this CSS code in your website:

.pin-board-pin .post-thumbnail img {height: auto;}

Just place it in the style.css of your child theme. If you don’t have a child theme, you can install a plugin that will allow you to add CSS codes.

Example

Thanks Bryan, I get an error when I try to install that plugin:

The package could not be installed. PCLZIP_ERR_BAD_FORMAT (-10) : Unable to find End of Central Dir Record signature

Is there another plugin you can recommend?

I’ve tried installing a couple other related plugins with the same error.

Can I drop that code into the CSS CSS Stylesheet Editor? (I’m guessing no…)

Have you considered installing plugins manually?: https://codex.www.ads-software.com/Managing_Plugins#Manual_Plugin_Installation