Nine people who reviewed it said that it was compact. Cas66 said in their Sony DSC-W510 review on Amazon “Very compact and creates very clear pictures”. J. B mentioned “This is a very compact camera and I can't fault it” in their review of the Sony DSC-W510 and rated the product 4 stars. John F. wrote on Amazon six years ago “Frankly when paying this sort of price for a compact camera I would suggest looking at compact models offered by manufacturers who have specialised in photography for years - Canon” yet he only gave it a score of 60 out of 100.
One customer considered that it was thin. John F. mentioned “Small, slim and sleek design taking up little room” but despite that he only gave it a rating of 3 stars.
One Sony DSC-W510 reviewer reckoned that it was lightweight. Lulu scored it very highly and she mentioned on Amazon “It is compact and lightweight and does everything you need from this type of camera” in her review of this digital camera.