If you're gonna salvage the wood, use a reciprocating saw and cut the cross planks off where they meet the braces. The larger end pieces are gonna be full of nail holes and as I wrote above, the time and effort to pull all the nails is really not worth it.

The cross planks are what most people talk about when they talk about using pallet wood for woodworking projects. Depending on where the pallet was made, you can get lucky sometimes and get some really nice exotic hardwood in premilled form.

John E