LibJF Needed by Async Pack Scan [26.3] 26.3.0
requiredMatching file found Matched file: [26.3] 26.3.0
Back to mods 
CurseForge · Minecraft mod
Async Pack Scan
Fixes lag while changing resource packs
Choose a version Pick your version below, then grab the matching file.
Quick answer
Which Async Pack Scan release should I use?
beta file [26.3] 26.3.0
Game version 26.3
Loader Fabric
Async Pack Scan [26.3] 26.3.0 targets 26.3 with Fabric. The project page does not say whether this file belongs on the client, dedicated server, or both. All 1 required mods have matching files.
Where it goes
Is Async Pack Scan required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
Client Source doesn’t say
Dedicated server Source doesn’t say
Loader for this release Fabric
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume
The source does not explicitly classify this release as client-only or server-only.
What else does Async Pack Scan [26.3] 26.3.0 need?
[26.3] 26.3.0. Change the file and its required mods may change too.
Install LibJF first. We found matching files for this game-version and loader setup. 1 comes through another mod in the chain.
1 listed on this file 1 pulled in by one of those mods
Fabric API Needed by LibJF
pulled inMatching file found Matched file: [26.3] Fabric API 0.161.0+26.3
1 extra mod was pulled in by another dependency. Indented rows show who needs each one. We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Async Pack Scan without breaking your instance.
Built for Async Pack Scan [26.3] 26.3.0. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use [26.3] 26.3.0. It targets 26.3 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install LibJF first. We found matching files for this game-version and loader setup. 1 comes through another mod in the chain.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside [26.3] 26.3.0. It opens that exact file at the source.
About this project
What does Async Pack Scan add?
In vanilla minecraft, the list of resource packs is refreshed by scanning all possible sources synchronously.
Generally, this is not a problem, but in the resource pack organizer screen, this scan is performed whenever it is resized and every twenty ticks.
If another mod (such as respackopts) hooks into the pack scan and increases its duration even slightly, this leads to major lag spikes and makes the screen near-unusable when using more than a few packs.
This mod fixes that issue by moving this computation to another thread and scheduling a scan task on those events instead, drastically improving perceived performance.
Since the vanilla code is designed for synchronous execution, this can cause issues like crashes in edge cases, but worked well enough in my testing.
Project description from CurseForge.
Pick your setup
Async Pack Scan by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
Minecraft version
26.3
1 loader buildMinecraft version
26.2
1 loader buildMinecraft version
26.1.1
1 loader buildMinecraft version
26.1
1 loader buildMinecraft version
1.21.11
1 loader buildMinecraft version
1.21.10
1 loader buildMinecraft version
1.21.9
1 loader buildMinecraft version
1.21.8
1 loader buildMinecraft version
1.21.7
1 loader buildMinecraft version
1.21.6
1 loader buildMinecraft version
1.21.5
1 loader buildMinecraft version
1.21.4
1 loader buildShowing the newest 12 of 20 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Async Pack Scan versions and loaders
[26.3] 26.3.0
async-pack-scan-26.3.0.jar
15 Sept 2026
Client Source doesn’t say Server Source doesn’t say Dependencies 1 required · matched Listed on Release listing
Check the 26.3 · Fabric setup Fabric26.3 beta
[26.2] 26.2.1
async-pack-scan-26.2.1.jar
21 Jul 2026
Client Source doesn’t say Server Source doesn’t say Dependencies 1 required · 1 unchecked Listed on Release listing
Check the 26.2 · Fabric setup Fabric26.2 beta
[26.2] 26.2.0
async-pack-scan-26.2.0.jar
17 Jun 2026
Client Source doesn’t say Server Source doesn’t say Dependencies 1 required · 1 unchecked Listed on Release listing
Check the 26.2 · Fabric setup Fabric26.2 beta
[26.1] 26.1.0
async-pack-scan-26.1.0.jar
28 Mar 2026
Client Source doesn’t say Server Source doesn’t say Dependencies 1 required · 1 unchecked Listed on Release listing
Check the 26.1.1 · Fabric setup Fabric26.126.1.1 beta
[1.21.11] 0.2.14
async-pack-scan-0.2.14.jar
10 Dec 2025
Client Source doesn’t say Server Source doesn’t say Dependencies 1 required · 1 unchecked Listed on Release listing
Check the 1.21.11 · Fabric setup Fabric1.21.11 beta
[1.21.10] 0.2.13
async-pack-scan-0.2.13.jar
9 Oct 2025
Client Source doesn’t say Server Source doesn’t say Dependencies 1 required · 1 unchecked Listed on Release listing
Check the 1.21.10 · Fabric setup Fabric1.21.10 beta
[1.21.9] 0.2.12
async-pack-scan-0.2.12.jar
1 Oct 2025
Client Source doesn’t say Server Source doesn’t say Dependencies 1 required · 1 unchecked Listed on Release listing
Check the 1.21.9 · Fabric setup Fabric1.21.9 beta
[1.21.8] 0.2.11
async-pack-scan-0.2.11.jar
18 Jul 2025
Client Source doesn’t say Server Source doesn’t say Dependencies 1 required · 1 unchecked Listed on Release listing
Check the 1.21.8 · Fabric setup Fabric1.21.8 beta
[1.21.7] 0.2.10
async-pack-scan-0.2.10.jar
1 Jul 2025
Client Source doesn’t say Server Source doesn’t say Dependencies 1 required · 1 unchecked Listed on Release listing
Check the 1.21.7 · Fabric setup Fabric1.21.7 beta
[1.21.6] 0.2.9
async-pack-scan-0.2.9.jar
17 Jun 2025
Client Source doesn’t say Server Source doesn’t say Dependencies 1 required · 1 unchecked Listed on Release listing
Check the 1.21.6 · Fabric setup Fabric1.21.6 beta
[1.21.5] 0.2.8
async-pack-scan-0.2.8.jar
25 Mar 2025
Client Source doesn’t say Server Source doesn’t say Dependencies 1 required · 1 unchecked Listed on Release listing
Check the 1.21.5 · Fabric setup 1.21.5Fabric beta
[1.21.4] 0.2.7
async-pack-scan-0.2.7.jar
3 Dec 2024
Client Source doesn’t say Server Source doesn’t say Dependencies 1 required · 1 unchecked Listed on Release listing
Check the 1.21.4 · Fabric setup Fabric1.21.4 beta
Looking for an older file? The official CurseForge project page is in Resources.
mod CurseForge · Minecraft
Inventory Interactions
Inventory Particles Addon which adds a lot of new item interactions! For example, physics!
mod CurseForge · Minecraft
From the Ground Up (Unofficial Port)
A Minecraft mod that adds research. This is a 1.21.1 port/adaptation of the 1.12.2 mod "From the Ground Up" by Astavie
mod CurseForge · Minecraft
AgriGen
Breed the best genes and crossbreed Plants!