Note: This article is for educational purposes. While there are "workarounds," the only official method is a paid subscription. You open Tinder. At the top of your screen, you see the gold circle. It says "4 People Like You." The images are blurry. You can see a vague outline, maybe a hair color, but not the face.
Tinder prioritizes showing you people who have already liked you. If you restrict your discovery to 1 mile and one age, the first profile you see is very likely your "blurred like."
Limitation: This only works if the person is still in your radius and age range. You may find old Reddit threads claiming that if you log into Tinder on a desktop computer and inspect the HTML code (using "Inspect Element"), you can find the unblurred image URL.
If you swipe left on a profile and immediately see "It's a Match!" — that means that profile was one of your blurred likes. You have now identified them (and matched) for free.
If you desperately need to know who liked you, use the 1-mile age-range trick and swipe left methodically. It takes 5 minutes. Otherwise, accept that the blur is permanent unless you pay.
Open your main swiping deck. Swipe left on every single person Tinder shows you.