Just Enough Threads [JEI Startup Optimize]
ModJEI loads in the background so you can enter your world sooner.
Why gradeB
How grades workStrengths
Points lost
- First release only 3 months ago−6 points
- Some modpacks removed it−3 points
- Under 5 million downloads−1 point
All 11 criteria
Maintenance
Full points21 / 21Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.10 days ago (14 Oct 2026) 12 / 12Supports popular versionsWhether the project has a file for a Minecraft version that 15% or more of the popular mods updated in the last 6 months also support. A version many modpacks use, like 1.20.1 or 1.21.1, also counts after a release in the last 12 months.26.1.2 on NeoForge, 1.20.1 on Forge. 15% or more of the popular mods updated in the last 6 months also have files for 26.1.2. Latest Minecraft: 26.3. 9 / 9Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.Does not apply. The project is under 6 months old.Stability
3 points lost12 / 15Removed from modpacksHow many modpacks removed it in a later version of the pack. We can only see this in modpacks with two or more versions. A pack that swaps it for another edition of the same project, or that is rebuilt from scratch, does not count.9 of the 49 modpacks with two or more versions removed it in a later one (18%) See the 9 modpacks7 / 10Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.Does not apply. The project is under 6 months old.Known conflictsHow many projects say they do not work with it, compared with how widely it is used. Packs, small projects, forks, ports, add-ons, alternatives and old versions do not count.None 5 / 5Transparency
Full points7 / 7Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · Tonywww2/JEI-Optimize 7 / 7Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.Does not apply. CurseForge links are not in our data.Popularity
1 point lost3 / 4DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.32,925 3 / 4Track record
6 points lost2 / 8AgeHow long the project has existed. It counts less when no new file came out recently.3 months, 63 releases 2 / 8Security
PassedFile checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 3 latest files for recent Minecraft versions. See Security
45.2 of the 55 points that apply = 82 out of 100. The points above are rounded to whole numbers.
About
Just Enough Threads helps clients enter worlds sooner by moving costly JEI startup work away from the loading screen and keeping the game responsive while JEI prepares its runtime. It builds JEI’s item-and-fluid search index after world entry and publishes the completed index at once, so the sidebar appears shortly afterward rather than holding up loading; if the background build fails, it falls back to JEI’s normal build. It can also run JEI startup serially on a background thread while preserving plugin callback order, and optionally pre-resolve vanilla recipe ingredients across worker threads before JEI performs its usual validation and registration. The mod reduces costly generated anvil and grindstone examples to representative recipes while retaining coverage across applicable enchantments and item families, and can compact Iron’s Spells ’n Spellbooks Arcane Anvil combinations while preserving eligible items and spell levels. Its client configuration lets users control the optimizations independently, including the experimental recipe pre-resolution option, and provides a master switch that restores JEI’s usual behavior.
Written from CurseForge and the GitHub README . How we write it
In-game changes
Changes the game's code in 3 areas: Inventory and itemsChanges 2 game code files in this area: items, chests and other containers, crafting and enchanting., Game coreChanges 2 game code files in this area: the main loop, lighting and other code the whole game uses. and User interfaceChanges 1 game code file in this area: menus, screens, tooltips, the chat window and the in-game overlay..
Adds no new blocks, items or other content.
Keeps all of vanilla Minecraft's textures, models and sounds.
Often used with it
See all 30Details
- Creator
- Tonywww
- License
- Not known
- Downloads
- 33K
- Created
- 11 Jul 2026
- Official page
- CurseForge
- Links
- Source code
Security
No harmful code found
We checked its files and read their code, without running it.
What it can do on your computer
- Creates settings files
- The mod keeps its settings in the config folder of your game, where you can change or delete them. 2 files in your config folder.
Why we show this: a mod runs on your computer like any program, so harmful code in it can take your accounts or files. Our checks look for known signs of harm. They cannot prove that a file is harmless. In the grade: malware means no grade, and a Warning in a latest file for a recent Minecraft version lowers it.
How we checked
- FilesWe download the files from Modrinth or CurseForge and look at what is inside them and what their code can do, without running them. Fixed rules tell what is harmful.3 latest files: the newest file for each Minecraft version and loader. All 3 are for recent versions. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks. See each file in Releases
- Their codeWe turn the code of the files back into readable code and follow what it does, without running it. This shows what it downloads, what it sends and where your login goes.Read without running it
- Looked for, not foundWe looked for these in the file and did not find them.The internet, folders outside the game, other programs, updating itself, the webcam or microphone, an AI service.
Privacy
We found nothing it sends
We read its code without running it: it contacts no web address while you play.
Why we show this: a mod can send things about you over the internet, like your player name or your login. Contacting an address to check for updates or download files sends nothing about you. Not in the grade: sending data can be normal for what a mod does.
How we checked
- Files readWe read the code without running it. We list each web address the code contacts while you play, and what it sends. Code that is never used is left out.The code of all 3 files, for recent Minecraft versions. See each file in Releases
AI
No sign so far that AI was used to make it
We looked for AI tools in its texts, files and images and found none.
We have not read its code history yet.
No sign of AI in the game
We found no AI service, AI library or AI model file in its code.
Why we show this: some players and servers avoid projects made with AI, and AI in the game can send what you write to an online service. Not in the grade: using AI does not tell whether a project works well or is kept up to date.
How we checked
- Author on ModrinthThe disclosure form on Modrinth. Since 13 Aug 2026, Modrinth's rules require it when a substantial part of the code is AI output, when an asset is mainly AI output, or when the project or its page relies on generative AI.Not on Modrinth.
- Code historyThe public code on GitHub: who made each change, credit lines such as "Co-authored-by", and its files.Not read yet
- Description and changelogsThe description, project page and newest changelogs: sentences saying an AI tool was used, and text pasted from an AI chat.Nothing found36 of 40 changelogs read
- Its filesFiles that AI coding tools leave behind (like AGENTS.md), and the texts inside the files you download.Nothing found
- Images in its filesHidden data in the images of the files you download, where AI image tools write their name and settings.Nothing found
- Code of the modThe code and files of the mod, read without running it: addresses of AI services, AI libraries, AI model files and a place for your own AI key.No AI service, AI library or AI model file221 code files read
Compatibility
See all 63 filesPoint at or tap a version to see its loaders.
Modpacks using this project
Find modpacks with it54 modpacks include Just Enough Threads [JEI Startup Optimize] in at least one of their versions. Here are the 30 most downloaded.
Integrated MC1.9M downloadslast version with it 21 Oct 2026
Age of Fate564K downloadslast version with it 19 Oct 2026
Monumental Experience471K downloadslast version with it 8 Sep 2026
Jurassic World Reborn II438K downloadslast version with it 12 Oct 2026
Create: Delight Remake138K downloadslast version with it 18 Oct 2026
Rhinocraft62K downloadslast version with it 3 Oct 2026
Mystic's Monstrosity - Greedy Edition30K downloadslast version with it 18 Oct 2026
Impostor Syndrome20K downloadslast version with it 21 Oct 2026
Realm of the Titans11K downloadslast version with it 6 Oct 2026
MWF - Mining with friends11K downloadslast version with it 9 Oct 2026Often in the same modpacks
Mods that modpacks often add together with Just Enough Threads [JEI Startup Optimize]. Share: how many of the modpacks with Just Enough Threads [JEI Startup Optimize] also have that mod.
sparkAModin 72% of the modpacks with Just Enough Threads [JEI Startup Optimize]
AllTheLeaks (Memory Leak Fix)AModin 70% of the modpacks with Just Enough Threads [JEI Startup Optimize]
Sophisticated StorageAModin 70% of the modpacks with Just Enough Threads [JEI Startup Optimize]
AmendmentsAModin 70% of the modpacks with Just Enough Threads [JEI Startup Optimize]
AttributeFixAModin 67% of the modpacks with Just Enough Threads [JEI Startup Optimize]
FastSuiteAModin 65% of the modpacks with Just Enough Threads [JEI Startup Optimize]
L_Ender's CataclysmBModin 65% of the modpacks with Just Enough Threads [JEI Startup Optimize]
ChunkyAModin 63% of the modpacks with Just Enough Threads [JEI Startup Optimize]
fix GPU memory leakAModin 63% of the modpacks with Just Enough Threads [JEI Startup Optimize]
TrashSlotAModin 63% of the modpacks with Just Enough Threads [JEI Startup Optimize]Latest files
The newest file for each Minecraft version and loader. The files for recent versions come first. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks.