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Krypton

Krypton

A mod to optimize the Minecraft networking stack

11.65M
4,045
Optimization
Utility

Compatibility

Minecraft: Java Edition

1.21.x
1.20.x
1.19.x
1.18.1–1.18.2
1.17.x
1.16.2–1.16.5

Platforms

Fabric

Supported environments

Client-side
Server-side
Client and server

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Links

Report issues View source Join Discord server
Donate on PayPalSponsor on GitHub

Creators

astei
astei Owner

Details

Licensed LGPL-3.0-only
Published 4 years ago
Updated 2 months ago
DescriptionChangelogVersions

Show all versions

Krypton 0.2.9

by astei on Mar 29, 2025
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  • Update to Minecraft 1.21.5
  • Resync network handlers from upstream

Krypton 0.2.8

by astei on Jun 22, 2024
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  • Update to 1.21 (@BenCat07)

Krypton 0.2.7

by astei on Apr 30, 2024
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  • Update for Minecraft 1.20.5/1.20.6

Krypton 0.2.6

by astei on Jan 2, 2024
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  • Fixes a memory leak.

0.2.5

by astei on Dec 30, 2023
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  • Fixes an incompatibility with Fabric API 0.9.1 and above. See also #111
  • Resync compress handler with Velocity

0.2.4

by astei on Sep 23, 2023
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  • Updated to Minecraft 1.20.2
  • Add krypton.permit-oversized-packets system property to permit oversized packets. Defaults to false for security reasons.

0.2.3

by astei on Jun 10, 2023
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  • Updated to Minecraft 1.20
  • Removed a mixin that is now implemented in the base game
  • Improved protocol conformance - Krypton now handles servers dynamically disabling and re-enabling compression
  • Added events indicating when certain events in the network pipeline happen that mods can snoop on
    • As a consequence of this, the old ViaFabric hooks have been removed.

0.2.2

by astei on Mar 16, 2023
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Thanks to DrexHD for the update to Minecraft 1.19.4!

  • Update to Minecraft 1.19.4
  • Updated velocity-native

0.2.1

by astei on Jul 30, 2022
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  • Update to Minecraft 1.19.1 (contributed by @wafflecoffee)
  • Fixed Multiconnect mod compatibility

0.2.0

by astei on Jun 8, 2022
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This is not just a Minecraft 1.19 update, it's also a feature release!

  • Fixes crash with Lithium on Quilt
  • Resynced with latest Velocity code
  • Send chunk packets in a spiral pattern and other fixes (contributed by @solonovamax)

0.1.9

by astei on Mar 9, 2022
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Fixes a regression with 0.1.8.

0.1.7

by astei on Mar 1, 2022
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Fix compatibility with 1.18.2

0.1.6

by astei on Dec 11, 2021
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  • Updated to Minecraft 1.18.1

0.1.5

by astei on Nov 30, 2021
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  • Updated to Minecraft 1.18
  • Fixed connecting to certain misbehaving server implementations
  • Added optimizations for the Minecraft entity tracker:
    • Optimized passenger check for the common case where there are no passengers riding an entity.
    • Optimized chunk sending to only track entities the player is nearby to

0.1.4

by astei on Jul 6, 2021
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Compatible with Minecraft 1.17.1

0.1.3

by astei on Jun 8, 2021
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  • Updated to Minecraft 1.17. (This release is not compatible with Minecraft 1.16.5 and earlier.)
  • Added VarInt writing optimizations.
  • Fixed packet sending counter.
  • Fixed ViaFabric incompatibility.

0.1.2

by astei on Feb 11, 2021
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Fixed several issues with flush consolidation

0.1.1

by astei on Jan 20, 2021
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0.1.0

by astei on Dec 21, 2020
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NOT AN OFFICIAL MINECRAFT SERVICE. NOT APPROVED BY OR ASSOCIATED WITH MOJANG OR MICROSOFT.