Component Viewer
by fixyldev
Component Viewer lets players inspect the data components of any item stack in a tooltip, then copy those values to the clipboard.
What it does
Holding ALT in a game screen displays the components attached to the item under the cursor, one at a time. Tapping DOWN moves to the next component. Values are shown in a nicely formatted layout, using SNBT or JSON notation, so nested data is easier to read than in a raw tooltip. The mod is configurable from inside the game without installing other mods, and its settings open with a press of the J key.
Because some component tooltips grow very large, the author suggests pairing the mod with a scrolling tooltip mod such as Tooltip Scroll, or copying the data into a separate text file. Component Viewer is client-side only, so servers run without it and players need nothing extra on the server. Installation needs Fabric API on Fabric and Quilt; on NeoForge it runs on its own. Files are published for 1.20.5 – 26.3 across Fabric, NeoForge and Quilt, and the license is MIT, so the source code is open source.
Key features
Component tooltips
Each component on an item stack appears as its own tooltip, so its contents can be read without opening a command.
Formatted values
Component data is shown in SNBT or JSON notation, with indentation that keeps nested structures readable.
Copy to clipboard
The values of a component can be copied to the clipboard and pasted into another program or a text file.
In-game configuration
Options can be changed in the game, with the settings screen opened by pressing J, and no extra configuration mod is needed.
Translations
The interface has been translated into several languages, and the author invites contributors to add more under the contributing guidelines.
Gallery
Compatibility
Latest build for each game version and loader.
26.x5 of 5 versions with builds
1.21.x12 of 12 versions with builds
1.20.x2 of 2 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Who it’s for: The mod suits players and developers who work with item data in Minecraft 1.20.5 and later. Server owners do not need to install it, because it only affects the client.
How it compares
Tag & Component Tooltips is a NeoForge-only client mod for 1.21 – 1.21.11, released under the Creative Commons Attribution 4.0 license and not open source. NBT Viewer supports Fabric and NeoForge for 1.21.1 – 26.2, also client-side only, under the MIT License, but it is not open source. Item & Entity NBT Viewer targets only 1.21.6 – 1.21.8 on Fabric and NeoForge, and its environment is client required with server optional.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Component Viewer | Fabric, NeoForge and Quilt | 1.20.5 – 26.3 | Client-side only | 2026-09-16 |
| Tag & Component Tooltips | NeoForge | 1.21 – 1.21.11 | Client-side only | 2026-08-01 |
| NBT Viewer | Fabric and NeoForge | 1.21.1 – 26.2 | Client-side only | 2026-09-24 |
| Item & Entity NBT Viewer | Fabric and NeoForge | 1.21.6 – 1.21.8 | Client required, server optional | 2025-07-26 |
Questions
Does Component Viewer need Fabric API?
Does the server need Component Viewer?
Which game versions have files?
In the catalog
Component Viewer is one of 8,016 Management mods on ModsFinder, and one of 5,930 Management mods for Fabric. 8,071 mods support Minecraft 26.3.
Similar mods
What the author says
Component Viewer is a mod for Minecraft Java Edition that allows you to view and copy components of any item stack. This mod is configurable out of the box by pressing J. If tooltips become extensively large, you can use a mod like Tooltip Scroll or just copy the data to a separate text file. Fabric API is required…
Official listing
- Modrinth page
- modrinth.com/mod/component-viewer
- Owner
- fixyldev
- Published
- 2024-05-07
- Updated on Modrinth
- 2026-09-16
- Facts verified
- 2026-10-15
