Phosphor
ModLoads new areas faster and reduces stutters while exploring.
Why no grade
How grades workFinished or replaced projects get no grade: they will not get fixes or new versions.
- Archived on Modrinth.
All 11 criteria
Maintenance
Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.The author marked an existing file as working on Minecraft 1.19.4, which came out on 14 Mar 2023. 34 modpacks released in the last 6 months still include it, so it keeps 45% of these points.Supports 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.1.19.4 on Fabric. About 3.5 years behind popular modding versions. Latest Minecraft: 26.3.Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.No release in the last 24 monthsStability
Removed 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.64 of the 293 modpacks with two or more versions removed it in a later one (22%)Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.Not measured yet.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.2 of 13 known conflicts count in the grade See the 13 known conflictsTransparency
Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · jellysquid3/phosphor-fabricPlace to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · CaffeineMC/phosphor-fabricPopularity
DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.9,518,465Track record
AgeHow long the project has existed. It counts less when no new file came out recently.6.6 years, 14 releasesSecurity
PassedFile checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 7 latest files. See Security
About
Phosphor is a lighting-engine optimization mod that reduces the CPU work involved in Minecraft’s block and sky-light calculations, helping chunks generate faster and reducing stutters when loading or traversing the world. It works on both client and server, and a server can use it without requiring players to install it on their clients. Phosphor preserves vanilla lighting behavior rather than changing how light looks or adding gameplay features, while patching lighting-engine bugs and inefficiencies such as stalled light propagation, skylight initialization problems, and lag spikes at chunk boundaries. The project is not currently maintained; the official page notes that improvements to Minecraft’s lighting engine since 1.20 have made most of Phosphor’s patches no longer applicable or useful.
Written from Modrinth , CurseForge and the GitHub README . How we write it
In-game changes
It has no file for a recent Minecraft version. This is about its files for Minecraft 1.15.2 to 1.19.4.
Changes the game's code in 5 areas: Game coreChanges 8 game code files in this area: the main loop, lighting and other code the whole game uses., Chunk loading and storageChanges 7 game code files in this area: how the game loads, tracks, saves and unloads chunks., Blocks and fluidsChanges 5 game code files in this area: how blocks, fluids and redstone work., Server and world logicChanges 1 game code file in this area: the world, commands, scoreboards, saved data and game rules. and Other game codeChanges 11 game code files in this area: game code that is not in one of the areas above..
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
- Creators
- CaffeineMC (jellysquid3 and PhiPro95)
- License
- GNU Lesser General Public License v3.0 only
- Downloads
- 9.5M
- Created
- 31 Mar 2020
- Official pages
- Modrinth , CurseForge
- Links
- Source code , Issues , Discord
Security
No harmful code found
It has no file for a recent Minecraft version. This is about its files for Minecraft 1.15.2 to 1.19.4.
We checked its files and read their code, without running it.
What it can do on your computer
- Connects to the internet
- It has code that can go online, for example to check for updates, load skins or send crash reports. Only in its files for Fabric 1.15.2; *. See Privacy
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.7 latest files: the newest file for each Minecraft version and loader. None is for a recent Minecraft version, so the answer above is about all of them. 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
- Author on ModrinthThe disclosure form on Modrinth, where the author declares that the project reads or edits things on your system outside the game. Since 13 Aug 2026, Modrinth's rules require it when this applies.Nothing declared about your system outside the game.
- Looked for, not foundWe looked for these in the file and did not find them.Folders outside the game, other programs, updating itself, the webcam or microphone, an AI service.
Privacy
We found nothing it sends
It has no file for a recent Minecraft version. This is about its files for Minecraft 1.15.2 to 1.19.4.
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 7 files, for Minecraft 1.15.2 to 1.19.4. See each file in Releases
- Author on ModrinthThe disclosure form on Modrinth, where the author declares crash reports, usage data and advertisements. Since 13 Aug 2026, Modrinth's rules require it when a project collects data on its users or shows advertisements.Nothing declared about crash reports, usage data or advertisements.
AI
No sign that AI was used to make it
We looked for AI tools in its texts, files, images and code history and found none.
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.No AI content or AI features declared.
- Code historyThe public code on GitHub: who made each change, credit lines such as "Co-authored-by", and its files.Nothing found
- Description and changelogsThe description, project page and newest changelogs: sentences saying an AI tool was used, and text pasted from an AI chat.Nothing found1 of 29 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 found1 image read
- 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 file42 code files read
Compatibility
See all 14 filesPoint at or tap a version to see its loaders.
Known conflicts
These projects do not work together with Phosphor: their authors or Phosphor's author say so. If you install both, the game can crash or some features can stop working. Some of them do the same job as Phosphor, so you only need one.
Starlight (Forge)Mod61.5M downloadsdeclared by Phosphor
Starlight (Fabric)Mod38.9M downloadsdeclared by Both
ScalableLuxMod28.8M downloadsdeclared by ScalableLux
Minecraft Backrooms Found FootageMod3.7M downloadsdeclared by Minecraft Backrooms Found Footage
Starlight with Create FixMod147K downloadsdeclared by Phosphor
Starlight (NeoForge)Mod59K downloadsdeclared by Phosphor
StarLight ReloadedMod17K downloadsdeclared by Both
Starlight (Backport)Mod7.3K downloadsdeclared by Both
Backrooms FF ContinuedMod3.2K downloadsdeclared by Backrooms FF ContinuedStarlight LegacyMod2.9K downloadsdeclared by BothRelated projects
Projects that need Phosphor to work.
Modpacks using this project
Find modpacks with it| Oct 2024 | 5 |
|---|---|
| Nov 2024 | 5 |
| Dec 2024 | 2 |
| Jan 2025 | 6 |
| Feb 2025 | 7 |
| Mar 2025 | 6 |
| Apr 2025 | 2 |
| May 2025 | 4 |
| Jun 2025 | 2 |
| Jul 2025 | 3 |
| Aug 2025 | 3 |
| Sep 2025 | 3 |
| Oct 2025 | 3 |
| Nov 2025 | 1 |
| Dec 2025 | 4 |
| Jan 2026 | 1 |
| Feb 2026 | 5 |
| Mar 2026 | 3 |
| Apr 2026 | 2 |
| May 2026 | 4 |
| Jun 2026 | 3 |
| Jul 2026 | 4 |
| Aug 2026 | 2 |
| Sep 2026 | 0 |
1,828 modpacks include Phosphor in at least one of their versions. Here are the 30 most downloaded.
Fabulously Optimized27.4M downloadslast version with it 1 Mar 2022
Better MC [FABRIC] BMC17.9M downloadslast version with it 6 Jul 2022
Medieval MC [FABRIC] MMC14.4M downloadslast version with it 7 Jul 2022
Fantasy MC Fabric1.9M downloadslast version with it 22 Jun 2022
Valhelsia: Enhanced Vanilla1.8M downloadslast version with it 30 May 2022
OptiFabric1.8M downloadslast version with it 1 Sep 2026
Boosted FPS (Performance Optimized) (FB)1.6M downloadslast version with it 24 Mar 2022
Create Live 41.3M downloadslast version with it 11 Apr 2023
All of Fabric 3 - AOF31.1M downloadslast version with it 1 Feb 2022
OptiFine for Fabric744K downloadslast version with it 20 Jan 2025Often in the same modpacks
Mods that modpacks often add together with Phosphor. Share: how many of the modpacks with Phosphor also have that mod.
LithiumAModin 94% of the modpacks with Phosphor
Mod MenuAModin 86% of the modpacks with Phosphor
LambDynamicLights - Dynamic LightsAModin 52% of the modpacks with Phosphor
Sodium ExtraAModin 50% of the modpacks with Phosphor
FerriteCoreAModin 50% of the modpacks with Phosphor
LazyDFU-Modin 47% of the modpacks with Phosphor
Reese's Sodium OptionsAModin 46% of the modpacks with Phosphor
Dynamic FPSAModin 44% of the modpacks with Phosphor
BetterF3AModin 44% of the modpacks with Phosphor
BetterEndBModin 41% of the modpacks with PhosphorLatest files
The newest file for each Minecraft version and loader. None is for a recent Minecraft version. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks.