OptiFine Sources

Downloads

Minecraft 1.21

11 builds of the OptiFine sources

1.21.11 HD U J9

5 Feb 2026

1.21.11 HD U J8

21 Jan 2026

1.21.10 HD U J7 pre11

3 Dec 2025

Preview

1.21.9 HD U J7 pre2

1 Oct 2025

Preview

1.21.8 HD U J6 pre16

29 Aug 2025

Preview

1.21.7 HD U J6 pre7

21 Jul 2025

Preview

1.21.6 HD U J6 pre3

30 Jun 2025

Preview

1.21.4 HD U J3

9 Feb 2025

1.21.3 HD U J2

3 Dec 2024

1.21.1 HD U J1

24 Sept 2024

1.21 HD U J1 pre9

4 Sept 2024

Preview