copypaster
Copy and paste Minecraft structures with player-relative positioning, ghost preview, persistent undo, and an optional browser editor.
- Loaders
- Fabric
- Downloads on Modrinth
- 1.2K
- Followers on Modrinth
- 2
- versions
- 13
- Updated
- September 18, 2026Sep 18
- Published
- in 2026
At a glance
Needed both in the game and on the server
Copy cuboid regions to files. Paste them back exactly where you mean to — anchored to your position.
Copy Paster is a Fabric client + server mod for survival and creative builders who want a fast, visual way to duplicate structures without leaving the game. Select a box with keybinds, name it in chat, then paste it later — position follows where you stand at copy time and paste time, so offsets stay intuitive.
[/]copy — two corners, live wireframe preview, name in chat- Paste options — absolute coords, rotation, mirror, skip air, overwrite confirm
- Paste ghost preview — cyan box when blocks would be overwritten (respects rotation/mirror)
- Post-paste edits —
/pasterotate,/pastemirror,/pastemovewith cascaded undo - Undo —
/pasteundowith persistent snapshots undercopypaster/undos/(survives restart) - LuckPerms — grant
copypaster.*nodes to non-ops; vanilla operators always allowed - Web UI (optional) — browser 3D viewer/editor with texture-accurate preview, palette remap, voxel paint, import/export
.nbt - Ukrainian (
uk_ua) — full UI strings alongside English
Source: github.com/matrunchyk/copypaster · Changelog · Issues
Install
| Where | What |
|---|---|
| Dedicated server | Matching `copy_paster-+.jarinmods/` + Fabric API |
| Each player who copies | Same JAR (same MC version) in client mods/ + bind [ / ] |
Pick your JAR (server and every copying client must match):
| Minecraft | Java | Example artifact |
|---|---|---|
| 1.21.11 | 21 | copy_paster-3.5.1+1.21.11.jar |
| 26.2 | 25 | copy_paster-3.5.1+26.2.jar |
| 26.3 | 25 | copy_paster-3.5.1+26.3.jar |
Requires Fabric Loader 0.19.5+ and Fabric API.
Server-only mode: /paste, /copylist, /copyinfo, /copyblocks, /copydelete, /copyweb, and the web UI still work. World copy requires the client mod and keybinds (or /copy with coords).
Optional: Mod Menu + Cloth Config for in-game client settings.
Quick start
1 · Save a region
- Stand at the anchor point you want for this copy.
- Press
[on corner 1, then]on corner 2 (wireframe follows your crosshair for the end corner). Or run/copy x1 y1 z1 x2 y2 z2without the client mod (requirescopypaster.copy). - Type a structure name in chat (
a–z,0–9,_,-, max 64 chars). Typecancelto abort (timeout from server config, default 60 s).
2 · Paste it back
- Stand in the same relative spot you used when copying (or use
at— see commands). - `/paste
— if the ghost warns about overwrites, run the suggested… confirm` command. - Use
/pasteinfowhile looking at the build, or/pasteundolist, then **`/pasteundo `**.
Examples:
/paste house
/paste house at 100 64 -20
/paste house rotate 90 mirror left_right noair confirmCommands
| Command | Description |
|---|---|
/copyhelp | Command summary (copy, paste, undo, web UI) |
/copy x1 y1 z1 x2 y2 z2 | Copy region via coordinates (chat naming) |
| `/copyblocks [page]` | Block type shopping list (paginated) |
| `/paste ` | Paste at player-relative anchor |
| `/paste at ` | Paste with min corner at world coordinates |
| `/paste rotate <90|180|270>` | Rotate before placing |
| `/paste mirror <left_right|front_back>` | Mirror before placing |
| `/paste noair` | Skip air blocks in the structure |
| `/paste … confirm` | Paste after overwrite warning |
/pasteundo [id] | Undo latest paste or a specific undo id |
/pasteinfo [distance] | Undo ID and details for paste at crosshair |
/pasteundolist | List pastes still available for undo |
/pastecancel | Dismiss overwrite preview without pasting |
| `/pasteselect ` | Highlight a paste; transforms target it |
/pasterotate [90|180|270] | Rotate an existing paste (cascaded undo) |
/pastemirror x|z | Mirror an existing paste |
| `/pastemove ` | Nudge an existing paste |
| `/pastemove at ` | Move paste min corner to coordinates |
/copylist | List saved structures |
| `/copyinfo ` | Size, dimension, offset, metadata |
| `/copydelete ` | Remove .nbt + .json |
/copyweb | Print web UI URL (when enabled) |
Access: vanilla operator always has full access. With LuckPerms, non-ops need copypaster.* nodes (see README for the full permission table).
Controls
| Input | Action |
|---|---|
[ | Set corner 1 (look at a solid block) |
] | Set corner 2 and send region to server |
| Chat name | Save structure after corners are set |
cancel in chat | Abort naming session |
Keybinds default to [ and ] on new installs — rebind under Options → Controls → Copy Paster if needed.
Web UI (optional)
Browser 3D viewer/editor for saved structures. Enable in config/copypaster-server.yml (web.enabled: true), restart, then run /copyweb. Features: orbit + WASD pan, Colors/Textures modes, palette remap, voxel paint, import/export .nbt.
Limits & storage
| Max volume | limits.maxVolume in server config (default 32 768) |
| Copy session timeout | limits.sessionTimeoutSeconds (default 60) |
| Files | Server copypaster/structures/ — `.nbt+.json` |
| Undo | Saved under copypaster/undos/ until /pasteundo; survives restart |
License
MIT — Copyright (c) 2026 Serhii Matrunchuk
FAQ
How to install copypaster?
Install Fabric for your Minecraft version, download copypaster for the same version and loader, put the file into the mods folder and launch the game with the loader profile.
Which Minecraft versions does copypaster support?
copypaster has builds for Minecraft 1.21.11, 26.1.2–26.3.
Is copypaster needed on the server?
Needed in the game and on the server
