If you've signed up for Google+
Free storage limits
Photos up to 2048 x 2048 pixels and videos up to 15 minutes won't count towards your free storage.
All photos uploaded in Google+ will be automatically resized to 2048 pixels (on their longest edge) and won't count towards your free storage quota.
All photos uploaded to Picasa Web Albums over the free size limit will count towards your 1 GB of free storage. When you reach your storage limit, any new photos you upload to Picasa Web larger than the free size limit will be automatically resized to 2048 pixels (on their longest edge).