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.”

949aa55b-28ec-4e3f-a299-654c495feaee
acf49a07-8656-48fb-9504-0f8870e2c997
a232dc1f-8642-4ab0-b225-aef4fd4c76a0
47e4fdb6-e710-40f3-8928-c71e4efa6b97
69ff0f6f-4c49-4f97-886c-bca935023f10
816ff41c-2099-4345-a4cb-aae729394ef9
c8f92b21-494b-4ae3-a846-6a28e2796ded
f77aad32-f369-412a-8552-18d2004601d3
db08bef9-985a-4066-b314-6f49d23eee5a
ae74b3be-2ac0-4d27-8cfa-e46813e6c417
    

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').

CFP4-RC92-7R47
4C5W-3PX2-M87W
P8JG-5JXH-2VCC
22G3-CVVC-583R
68FG-HFG7-76V5
HXCC-HG52-V8XH
VQP8-W62V-8238
3GFC-RX63-HRV7
G6CX-78X3-W99J
RMHM-8VWP-R8P2
    

Double UUID V4

256 bits, 32 bytes

244 bits of entropy, 2.8269553 × 10⁷³ possible IDs

515a8be2-cd58-40e5-ba53-d68b227397ad-25b17c9a-abce-4c30-a84f-ae620fce7a01
574829b7-0d51-4985-8baf-c36582d046fc-d5ffa43b-47ab-488e-8690-0b2c023ae0ba
695c7d43-6785-45c6-9722-c05c46cd99a2-a882e728-9b37-4bc9-b51e-42ac94c57920
c06847da-99b7-4864-94e2-26e4422322b6-b7dca4c5-e6fe-4e0d-9c02-1cd49202469a
01a0ad5f-6571-4bf4-a997-3aaddb3df896-e0465f03-129e-4722-949c-c9e7b1cb9cf8
beec964d-b2e7-4a86-8866-c475f4c1d805-b9bb2d75-fd3e-4fde-a8fa-3d26d9729d50
77fa34bb-ecfb-4531-8e57-f1f719989003-a7785322-c119-4ea1-bc71-14ee0d062484
7d09d665-f829-44d2-823c-e4e584a4704e-7ff8abb7-3956-4865-91a0-aa7340228854
8001a4fd-8d98-435e-894e-b38fce406d9d-6930667a-a473-4745-b91d-49dda24986d1
08e32f9b-3ab9-4399-a1fe-ea6de6320d11-2ea935a1-b499-4fb0-ab0d-6bf2f4ae9639
    

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.

019bc56c-8221-73a9-8529-98bfee7809dc
019bc56c-8222-7179-adce-57cb6105c696
019bc56c-8222-7179-adce-5a4092624757
019bc56c-8223-77ec-a3a8-1323d43322a3
019bc56c-8223-77ec-a3a8-1749f3c6965a
019bc56c-8223-77ec-a3a8-194a7a7dc1ac
019bc56c-8223-77ec-a3a8-1d6c8c5d38a0
019bc56c-8223-77ec-a3a8-216d9c878c96
019bc56c-8223-77ec-a3a8-264bbbaf094d
019bc56c-8223-77ec-a3a8-2a558c1da50c
    

Names (Short)

Randomly generated people names.

Cherianne Tiphany
Davina Norine
Chery Bennie
Eveleen Latrena
Chere Kerianne
Linnea Sibyl
Cyndy Cairistiona
Tatiania Grazia
Carmelina Shawna
Oona Modestia
    

Names (Long)

Randomly generated people names.

Krissy Elicia Haleigh
Genna Nichole Bee
Karoly Bridget Philomena
Myra Aurel Jeannie
Othelia Janey Min
Florance Theadora Eolanda
Bobinette Shelagh Nari
Laura Lanny Giuditta
Imojean Raf Tildi
Mahala Constancy Aleen
    

Countries

Randomly generated country names.

Åland Islands
Denmark
Ghana
Ethiopia
Malta
Solomon Islands
Equatorial Guinea
India
French Guiana
Hong Kong SAR China
    

Passwords

Randomly generated secure passwords.

BLh_&@%evFgP3,g<KCQo
l#SbCvz<=7[frB.EAqBx
D6XP3si3>{$y7lTo,c49
I:efN}p@Y%=UPO6:G6Sh
IKDhiI+;?9m!mR9dsrV1
fTFhp*?_S4}nX8)et=4H
Bu}PGSA[Xm@uz{vJf{w*
Pu^S,T@*&d[Jc4;F[9}x
1F}Jnb@KT|qoyGIu(_Gx
y&KB0$NK]fi<=844]xtj
    

Process Folder Names

Sequentially generated process folder names.

20260116-060941-4JC5XP
20260116-060941-VGRC68
20260116-060941-HGGP6V
20260116-060941-9F338C
20260116-060941-QQ9R22
20260116-060941-QRJV3F
20260116-060941-C5XCX4
20260116-060941-VCH7JG
20260116-060941-H53W23
20260116-060941-42XVH4