Hi there,

For the vendor dashboard logo, it should have a ratio of 5 to 1 width to height, for example 500 x 100 px, or 400 x 80 px,

For the vendor profile it should be a square image, 100 x 100 px or higher (such as 250 x 250 px)

Vendor store banner is hard to say - it depends on your site / theme, it depends on how wide the page is.

Kind regards,

Stefan

Something is not quite right about how that logo is shown on the dashboard - I am not sure why - seems like some sort of conflict with something. 

There's a large space to the left side of the logo which shouldn't be there,

It would help if I could check with a site login or a vendor dashboard login so I can check the CSS there,

Thank you,

The Perfmatters plugin seems to be affecting how that image is displayed.

If I disable the Perfmatters plugin, the image then shows differently.

With the plugin disabled I see

With it enabled:

After some testing I think it's related to the setting "Add Missing Image Dimensions".

In both cases I do not see the space to the left side of the image that I saw in your video.