Where are the container sizes?

I am using the Smush plugin which is telling me my images are too large for the container sizes. Where can I find these, please? Thanks

Thanks for your reply Anamaria.

Sure, I can explain. A container is the width of the content holder. It sometimes refers to sidebar width for example. In this case, Newspaper theme has an image size and a container size. The container is smaller than the image, causing a red flag for site speed tests. Please can you tell me where I can find the container sizes for the images in the blog posts? Thumbnail container sizes are also helpful. Then I can resize my images to suit.

Thank you!

Hi,
Please can you explain ‘If you want to have the image size from the media library you can use the inline single image element that takes over the size from the media library’? Are you referring to my question about images within the blog post? I think I’m fin in choosing the image size int he media library. But my question is, what is container size that will hold that image, so that I can therefore resize it. Thank you!
Also, in regards to the blocks and grids, thank you for helping me choose the image size there. But I still don’t know what the container size is for those thumbnails. That’s the bit we’re missing. Thanks again!