UUID V4

128 bits, 16 bytes

122 bits of entropy, 5.31691198 × 10³⁶ possible IDs

“...the odds of collision between any two is 1 in 2.71 x 10¹⁸ Put another way, one would need to generate 1 billion v4 UUIDs per second for 85 years to have a 50% chance of a single collision.”

de9d87c1-d852-4c4a-bd47-803fae76ad26
345d938d-c6fc-482e-b284-719aea07df65
7c49e2e2-d24b-4337-b378-a5dfa43f5fca
27999d0f-bf1d-41f1-b78d-938197b2e312
379e2e15-b68a-48ee-81ba-3745e73fefd4
f83aae7a-823c-4eaa-9119-10476b955dcd
6f224bc5-8154-4bfe-932a-127f4c26c72c
04b738e1-5f01-4e6a-9642-f0d2c3bd5f2c
e0da03bd-7712-4ec2-ae93-2c3633ababd7
ea37afc3-baff-4613-b902-3a6fe6c4fe52
    

OLC IDs

7 bytes

51.863 bits of entropy, 4.096 × 10¹⁵ possible IDs

Open Location Code (OLC) alphabet Ids. OLC is a geocoding system that encodes latitude and longitude into a short string of characters. The alphabet is simplified to use only uppercase letters and digits, excluding characters that can be easily confused (like '0' and 'O', '1' and 'I').

WQWQ-PFH2-4J23
JJQH-CG23-CWR5
6M2W-5MG2-M3VV
J6WJ-XRG4-8FJ8
M6PM-CXPG-R2VJ
HGGR-MW3H-PV6J
9RP3-GRJJ-XV7R
4PWJ-787W-PH8J
4QQ5-HF9X-72WG
XPMF-CXJ3-QXC8
    

Double UUID V4

256 bits, 32 bytes

244 bits of entropy, 2.8269553 × 10⁷³ possible IDs

3f79d06e-bdfb-41a3-bab5-7bd06a83b8e2-3561c5cc-1684-48ea-80d3-d3df52a9b7e3
136b98c8-77ba-482d-bfc6-fec3d56b998a-8aad10c3-27e3-4c9f-b67f-893162832d92
ff1cef4d-9339-44f5-bdfc-d5c9abaa420d-a045dc19-8178-42be-85a6-d72a8926b65c
aa5e8def-85cc-4a50-88e0-ac38e9bfc9dc-0537b26a-aefc-466b-b528-04fabacae176
d9acb54e-1ce9-4cec-9ca0-3d582f5a59ca-83201b85-9be0-4a84-85a5-4f94e3242342
7a7fadaa-977e-4691-843f-d7262072fdfd-2bac2ad4-cf65-4527-b1b5-1f701f546061
ed71c412-8b73-48a2-8d73-fae180a40ff3-9dc568a2-3e4f-476e-bc3d-c3d110b41692
447b5e45-d226-4e80-8e5a-9dccfc2bfa61-a9ed75cb-0447-437e-93ff-e85b61daaedb
f67448bb-2a17-4ccb-ab45-7c382724b785-b989ec10-bc6f-42ec-b808-f0e024045638
97a0ea60-854e-4473-8151-434e0e1abcb0-f40b0a29-059f-439a-8cc9-3e7bd195553a
    

UUID V7

Unix ms timestamp (48-bit), random bits (74-bit total). Sortable by time.

Excellent DB performance (sequential inserts); sortable; no MAC leakage. Database primary keys; distributed systems. Recommended for most modern apps/DBs.

019cd52a-6637-74dd-8293-62028bba4d9b
019cd52a-6637-74dd-8293-6504b889c94b
019cd52a-6637-74dd-8293-691b310c6c52
019cd52a-6637-74dd-8293-6eef8af91d26
019cd52a-6637-74dd-8293-7184c1b54058
019cd52a-6637-74dd-8293-758e7234625e
019cd52a-6637-74dd-8293-789bd6284bbb
019cd52a-6637-74dd-8293-7dc44b961452
019cd52a-6637-74dd-8293-8252b77997c3
019cd52a-6637-74dd-8293-877f7068139c
    

Names (Short)

Randomly generated people names.

Nonnah Tatiana
Kristen Roobbie
Dulcea Emmaline
Siobhan Vera
Lilia Marylou
Mildred Sissie
Randi Harmonie
Alissa Prue
Persis Josey
Mariana Ellie
    

Names (Long)

Randomly generated people names.

Bellina Almeta Rita
Easter Bidget Gwendolyn
Gabi Barbaraanne Franciska
Celle Abagael Norry
Hilliary Kerrill Dasya
Loralie Kippy Vivyanne
Marin Rheta Bren
Betteanne Rochella Faye
Larisa Betsey Letitia
Bride Mariel Jacinda
    

Countries

Randomly generated country names.

Lebanon
Cayman Islands
India
Jersey
Puerto Rico
Montenegro
Romania
Austria
Mexico
Jamaica
    

Passwords

Randomly generated secure passwords.

Y*afpnC}7EovQsYSzT9s
EskM|+ZbcA2InReGt;Du
B!^09y;.uy&4vId{yo?R
&mGYdf)Mjxdk7*nXo)mk
3:f2L[J8sciwpx:DPX3i
k<KstE<S0fGBxXkqcO*F
_6?)e!2cF4A{YE6x8WsW
.-,}UAvj_,-(+z3nf(T4
a;u$NaE4j6)%3)Ypouy@
oki2wqIEFvQoi<X]oWP$
    

Process Folder Names

Sequentially generated process, human-readable, folder names.

20260310-003411-R6RR54
20260310-003411-X4G468
20260310-003411-4XPFJC
20260310-003411-9C235Q
20260310-003411-F99WQM
20260310-003411-3Q76WR
20260310-003411-QCV3FG
20260310-003411-G2J27X
20260310-003411-9P35J8
20260310-003411-6M9HVR
    

Google-like IDs

Randomly generated Google-like 'sub' IDs.

521948611323339317347
058475117858856911179
152066979847152073252
461499163209437706757
919401274899878520786
125431267680385374729
062696218469482855523
324096828630318750812
931488746830559556489
758395971010293402420
    

Unix Timestamps

Randomly generated Unix timestamps from the past 2 months.

1771250223
1769917198
1771513434
1770669216
1771857966
1768220465
1769015361
1769373463
1769529696
1769558526
    

GUIDs

Randomly generated GUIDs.

jGL6VG16dPr6
A1JmDJtGXoR7
ENYgkTcp50Vf
w2qqePaYKT24
qcVzR4L_db_8
bN96fMQlgKwS
X6dVRp_8yWp-
caHgMHYcSHSg
wChPfK0ASqv0
Nn2oDS_PIyvl