Place the roughly chopped tomatoes, red onion, jalapeño pepper, cilantro, and minced garlic into a food processor or blender.
Add the lime juice, ground cumin, salt, and pepper to the processor or blender.
Pulse or blend the ingredients until you achieve your desired consistency. For a smoother salsa, blend for a longer time; for a chunkier texture, blend briefly.
Taste and adjust the seasonings as needed.
Transfer the salsa to a bowl, cover with plastic wrap, and refrigerate for at least 30 minutes to let the flavors meld.