slide size wrong

Use 1600 px X 400px;

thank you,
but the image seems already distorted
How can I do?

Thank you very much,
Giandonato

Did you try to use use higher resolution images?

Thank you for your responses.
I’ve a 200 x 200 px logo that I put in a 1600×400 px White background with Gimp.The result is ditorted and the logo seems too small
So I tried to enlarge the logo with Gimp to 350X350 px and put on the same withe background producing an image 1600X400 px and the result was the one you can see now at https://www.espertoenergia.it : a little bit distorted and not so clear. Anyone can help me?
Thank you bery much,
Giandonato

if its the logo in the header may be you should to change the CSS to this

.logo-img {
height: 60px;
width: 250px;
}

so it will fit the image with this dimension that you inserted in the header as a logo

https://www.espertoenergia.it/wp-content/uploads/2014/04/espertoenergia-60×250.png

Hope this will help

It’s not that one but le slide image ,
Thank you very much

Hi Giandonato loporcaro

We gone your site, find your logo image is hide.
Provide some css code for show your logo and increases logo height and width.
.logo-img {
height: Your logo height;
width: Your logo width;
display:block;
}

Thanks
-Hari