Swiping trains you to read a profile in under two seconds, mostly on photos, which is a genuinely bad way to predict whether you'd get along with someone. Photos tell you what someone looks like and, at best, whether they can take a decent picture. That's the full extent of what they reliably tell you.
Read the bio for specificity, not humor — someone who mentions an actual hobby, opinion, or plan tells you more than someone who wrote three jokes and no information. Look at what they chose to leave out as much as what they included; a profile that's all group photos and no solo shots is itself a data point. Check whether their stated intentions match their apparent effort — a "looking for something real" bio paired with a one-line, low-effort profile is a mismatch worth noticing before you match.
None of this replaces an actual conversation, let alone a compatibility read. But reading a profile properly, once, saves you from three weeks of texting someone whose profile already told you where this was headed.