I'm looking the right size for the logo a Promo tab of Gmail. for some reason, the Logo that I used works well on android but on iPhone it's zoomed-in.
Example of the logo on iPhone:
Example of the logo on Android:
I'm looking the right size for the logo a Promo tab of Gmail. for some reason, the Logo that I used works well on android but on iPhone it's zoomed-in.
Example of the logo on iPhone:
Example of the logo on Android:
Answer:
While there is no recommeneded specification for the size of the Promotions tab logo by Google, all their examples use a logo of 48x48px.
More Information:
All best practices for the Promotions tab are given on the Best Practices page. For the logo, they only specify protocol rather than image size:
By looking at the examples given by Google, however, you can see that each one uses this sample image, which is 48x48px in size:
From the Get started page:
From the Troubleshooting page:
and:
So, it can be safely assumed that a logo with 48x48 size, of PNG format, would be sufficient for a Promotions tab logo.
References:
googleg_48dp.png
: Google Exmaple logo