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copypaster
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Copy/paste Minecraft cuboid regions to .nbt with player-relative positioning, interactive selection, paste preview, and undo.
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Must be installed on both the client and the server.
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Description
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-<version>+<mc>.jar in mods/ + 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-3.4.1+1.21.11.jar |
| 26.2 | 25 | copy_paster-3.4.1+26.2.jar |
Requires Fabric Loader 0.19.3+ 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 <name>— if the ghost warns about overwrites, run the suggested… confirmcommand.- Use
/pasteinfowhile looking at the build, or/pasteundolist, then/pasteundo <id>.
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 <name> [page] |
Block type shopping list (paginated) |
/paste <name> |
Paste at player-relative anchor |
/paste <name> at <x> <y> <z> |
Paste with min corner at world coordinates |
/paste <name> rotate <90|180|270> |
Rotate before placing |
/paste <name> mirror <left_right|front_back> |
Mirror before placing |
/paste <name> noair |
Skip air blocks in the structure |
/paste <name> … 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 <undo id> |
Highlight a paste; transforms target it |
/pasterotate [90|180|270] |
Rotate an existing paste (cascaded undo) |
/pastemirror x|z |
Mirror an existing paste |
/pastemove <dx> <dy> <dz> |
Nudge an existing paste |
/pastemove at <x> <y> <z> |
Move paste min corner to coordinates |
/copylist |
List saved structures |
/copyinfo <name> |
Size, dimension, offset, metadata |
/copydelete <name> |
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/ — <name>.nbt + <name>.json |
| Undo | Saved under copypaster/undos/ until /pasteundo; survives restart |
License
MIT — Copyright (c) 2026 Serhii Matrunchuk
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-<version>+<mc>.jar in mods/ + 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 <name>— if the ghost warns about overwrites, run the suggested… confirmcommand.- Use
/pasteinfowhile looking at the build, or/pasteundolist, then/pasteundo <id>.
Examples:
/paste house
/paste house at 100 64 -20
/paste house rotate 90 mirror left_right noair confirm
Commands
| Command | Description |
|---|---|
/copyhelp |
Command summary (copy, paste, undo, web UI) |
/copy x1 y1 z1 x2 y2 z2 |
Copy region via coordinates (chat naming) |
/copyblocks <name> [page] |
Block type shopping list (paginated) |
/paste <name> |
Paste at player-relative anchor |
/paste <name> at <x> <y> <z> |
Paste with min corner at world coordinates |
/paste <name> rotate <90|180|270> |
Rotate before placing |
/paste <name> mirror <left_right|front_back> |
Mirror before placing |
/paste <name> noair |
Skip air blocks in the structure |
/paste <name> … 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 <undo id> |
Highlight a paste; transforms target it |
/pasterotate [90|180|270] |
Rotate an existing paste (cascaded undo) |
/pastemirror x|z |
Mirror an existing paste |
/pastemove <dx> <dy> <dz> |
Nudge an existing paste |
/pastemove at <x> <y> <z> |
Move paste min corner to coordinates |
/copylist |
List saved structures |
/copyinfo <name> |
Size, dimension, offset, metadata |
/copydelete <name> |
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/ — <name>.nbt + <name>.json |
| Undo | Saved under copypaster/undos/ until /pasteundo; survives restart |
License
MIT — Copyright (c) 2026 Serhii Matrunchuk
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Copy Paster Copy/paste Minecraft cuboid regions using an interactive selection, paste preview, and undo — blocks, items, entities included!
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