The phrase "than the picture" is an idiomatic expression that means something is better or more desirable than what was expected. It suggests a comparison between reality and one's expectations, where reality turns out to be more favorable.
Sentences with «than the picture»
I really like the shoe... looks even better than the picture shows. (garnethill.com)
Is there anything more gorgeous than a picture of a new parent seeing their baby for the first time? (mommyish.com)
I ordered the gown for my wedding, I was so happy that the dress is more beautiful than the pictures on site. (weddingdresstrend.com)