Polymer - Quality of Life
ModSmoother block breaking and fewer visual glitches on modded servers.
- Security
- Passed
- Privacy
- None found
- Runs on
- Client and server
- Loaders
- Fabric
- Minecraft versions
- Up to 26.3
Why gradeA
How grades workStrengths
Points lost
- Under 5 million downloads−1 point
All 11 criteria
Maintenance
Full points27 / 27Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.4 weeks ago (28 Sep 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.26.3 on Fabric (latest) 9 / 9Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.Releases in 10 of the last 24 months 6 / 6Stability
Full points22 / 22Removed 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.None of the 10 modpacks with two or more versions removed it 10 / 10Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.No quick fix in 2 years 7 / 7Known 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 of the 3 known conflicts count in the grade See the 3 known conflicts5 / 5Transparency
Full points10 / 10Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · DrexHD/polymer-qol 7 / 7Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · DrexHD/polymer-qol 3 / 3Popularity
1 point lost3 / 4DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.22,350 3 / 4Track record
Full points8 / 8AgeHow long the project has existed. It counts less when no new file came out recently.17 months, 10 releases 8 / 8Security
PassedFile checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 8 latest files for recent Minecraft versions. See Security
69.6 of the 71 points that apply = 98 out of 100. The points above are rounded to whole numbers.
About
Polymer Quality of Life improves play on servers powered by Polymer or PolyMc and must be installed on both the client and server. When enabled by the server, client-side mining uses Polymer's block syncing to calculate modded block-breaking times on the client, making block breaking smoother, particularly at high ping. On the client, breaking or placing blocks suppresses block updates that could otherwise show visually incorrect blocks, an effect that is especially useful at high ping. A server option can also prevent players from swinging their arms when interacting with fake noteblocks, which are often used for modded blocks.
Written from Modrinth and CurseForge . How we write it
In-game changes
Changes the game's code in 4 areas: Blocks and fluidsChanges 3 game code files in this area: how blocks, fluids and redstone work., PlayerChanges 2 game code files in this area: your character: movement, abilities, hunger and controls., Inventory and itemsChanges 2 game code files in this area: items, chests and other containers, crafting and enchanting. and Networking and multiplayerChanges 1 game code file in this area: connections, the server list and what is sent between your game and a server..
Libraries packed inside it change 105 more game code files: Polymer (Core), Polymer (Networking), Packet Tweaker and 2 more.
Adds no new blocks, items or other content.
Keeps all of vanilla Minecraft's textures, models and sounds.
Details
- Creator
- DrexHD
- License
- MIT License
- Downloads
- 22K
- Created
- 28 May 2025
- Official pages
- Modrinth , CurseForge
- Links
- Source code , Issues , Discord
Security
No harmful code found
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. Found in Polymer (Core), a library it includes. See Privacy
- Creates settings files
- The mod keeps its settings in the config folder of your game, where you can change or delete them. 1 file 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.8 latest files: the newest file for each Minecraft version and loader. All 8 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
- 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.
- Modrinth and CurseForgeA release with a different file on Modrinth and on CurseForge, whose code is not the same. Each file is checked on its own. Nothing is blocked.Minecraft 1.21.5 · Fabric · release 1.0.0 · 28 May 2025: Modrinthcode differs in 1 release
polymer-qol-1.0.0.jar, CurseForgepolymer-qol-1.0.0.jar. 3 classes changed, 3 classes only in the Modrinth file:polymer-core: KeyboardMixin,polymer-core > polymer-networking > polymer-common: CommonImpl,polymer-core > polymer-networking > polymer-common: CommonImplUtils,polymer-core: ClientDebugFlags(Modrinth only),polymer-core: ItemModelManagerMixin(Modrinth only),polymer-core: TextRendererMixin(Modrinth only).
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 8 files, for recent Minecraft versions. 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 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.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 README.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 found3 of 21 changelogs read
- Its filesCredits and texts in the files you download that name an AI tool.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 file353 code files read
Compatibility
See all 10 filesPoint at or tap a version to see its loaders.
Known conflicts
These projects do not work together with Polymer - Quality of Life: their authors or Polymer - Quality of Life'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 Polymer - Quality of Life, so you only need one.
Modpacks using this project
Find modpacks with itModpacks that include Polymer - Quality of Life in at least one of their versions, most downloaded first.
Polymania!18K downloadslast version with it 2 Sep 2026
TABSMP Modpack9.5K downloadslast version with it 13 Oct 2026
Danmo5.7K downloadslast version with it 18 Oct 2026
Borukva Modpack4.5K downloadslast version with it 19 Aug 2026
Survival Reborn3K downloadslast version with it 23 Jul 2025
Cam's Cartoonied2.2K downloadslast version with it 5 Jan 2026
The Lads Client1.8K downloadslast version with it 4 Jun 2026
Хрєкотрон816 downloadslast version with it 3 Aug 2026
Hyperion204 downloadslast version with it 15 Jun 2026
GigaCraft 2026 (Formerly Bearcraft QoL)192 downloadslast version with it 2 Aug 2025Latest 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.