Answer: At 4 g of net carbs per serving, this ketchup is not keto-friendly.
This product may advertise reduced sugar, but it's still almost entirely carbs. It contains no fiber, no protein, and no fat.
While 4 g of net carbs is a relatively small portion of your daily limit, it's very high for a condiment. Consider more keto-friendly ketchups such as Heinz's No Sugar Added variety.