Driver Caliper leak?

Was doing some work on the truck, and noticed a bunch of fluid all over the Driver Side caliper and signs of it splashing against my tire (seen in pics) washed the truck a few hours ago and it was not like that... any idea where to start? There's a couple drops building up on the bottom of caliper but nothing dropping yet. They're most likely old as fuck, might be time to upgrade to the power stop kit?

 

While holding down brake pedal does it slowly creep down? Have someone hold it down while you check for leaks. Also make sure bleeder tight.
Possible brake line crimp leaking or copper washers not sealing.
Also how low are pads? Have seen pistons come out enough to leak and or leaking fluid out past caliper piston seal/piston.
However, judging by picture alone my guess is it is leaking around brake line crimp.

 

Ended up washing it off with water, let them dry. Tightened banjo bolt. Wasn't loose but was able to get a few firm rotations on the ratchet. After that pumped he brakes with truck on ... no sign of leak... went for s drive used brakes. Hopped out no sign of leaks. So who knows .... lol pads are getting low. I was getting ready to order a powerstop kit

 

I had the same issue, the right caliper was bad, replaced it, STILL leaking. Weird thing is, it looks like your pics, but I can' find the actual leak anywhere

 

Looks to me like the line is leaking at the crimp.

 

Haven't seen anything since tightening that brake line bolt... so maybe that was it

 

Yes, it was.

If it had been tight you would have had no rotations.