Image to Three.js Model
img2threejs/img2threejs
Rebuilds the object in a reference image as a procedural, animation-ready Three.js model written entirely in code, using staged sculpting with quality checks.
Optimize and post-process GLB/glTF 3D models. An agent skill from rawwerks/VibeCAD.
Install Gltf Transform
$ npx skills add rawwerks/VibeCAD --skill gltf-transform -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install rawwerks/VibeCAD gltf-transform --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/rawwerks/VibeCAD.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/gltf-transform/skills/gltf-transform .claude/skills/gltf-transform && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "gltf-transform" agent skill from https://github.com/rawwerks/VibeCAD/tree/main/plugins/gltf-transform/skills/gltf-transform into .claude/skills/gltf-transform/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gltf-transform", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/rawwerks/VibeCAD/tree/main/plugins/gltf-transform/skills/gltf-transformType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add rawwerks/VibeCAD --skill gltf-transform -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install rawwerks/VibeCAD gltf-transform --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/rawwerks/VibeCAD.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/gltf-transform/skills/gltf-transform .agents/skills/gltf-transform && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "gltf-transform" agent skill from https://github.com/rawwerks/VibeCAD/tree/main/plugins/gltf-transform/skills/gltf-transform into .agents/skills/gltf-transform/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gltf-transform", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add rawwerks/VibeCAD --skill gltf-transform -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install rawwerks/VibeCAD gltf-transform --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/rawwerks/VibeCAD.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/gltf-transform/skills/gltf-transform .cursor/skills/gltf-transform && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "gltf-transform" agent skill from https://github.com/rawwerks/VibeCAD/tree/main/plugins/gltf-transform/skills/gltf-transform into .cursor/skills/gltf-transform/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gltf-transform", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/rawwerks/VibeCAD.git --path plugins/gltf-transform/skills/gltf-transform--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add rawwerks/VibeCAD --skill gltf-transform -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install rawwerks/VibeCAD gltf-transform --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/rawwerks/VibeCAD.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/gltf-transform/skills/gltf-transform .gemini/skills/gltf-transform && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "gltf-transform" agent skill from https://github.com/rawwerks/VibeCAD/tree/main/plugins/gltf-transform/skills/gltf-transform into .gemini/skills/gltf-transform/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gltf-transform", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install rawwerks/VibeCAD gltf-transformInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add rawwerks/VibeCAD --skill gltf-transform -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/rawwerks/VibeCAD.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/gltf-transform/skills/gltf-transform .github/skills/gltf-transform && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "gltf-transform" agent skill from https://github.com/rawwerks/VibeCAD/tree/main/plugins/gltf-transform/skills/gltf-transform into .github/skills/gltf-transform/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gltf-transform", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add rawwerks/VibeCAD --skill gltf-transform -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install rawwerks/VibeCAD gltf-transform --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/rawwerks/VibeCAD.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/gltf-transform/skills/gltf-transform .opencode/skills/gltf-transform && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "gltf-transform" agent skill from https://github.com/rawwerks/VibeCAD/tree/main/plugins/gltf-transform/skills/gltf-transform into .opencode/skills/gltf-transform/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "gltf-transform", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
gltf-transform- GitHub stars
- 121
- Token cost
- ~825 tokens
- SKILL.md length
- 169 words
- Files
- 1
- Skills in repo
- 4
- Repo updated
- First seen
- Licence
- MIT
At a glance
Optimize and post-process GLB/glTF 3D models. An agent skill from rawwerks/VibeCAD.
- Works in 3 steps: build123d exports high-quality CAD… → gltf-transform compresses for web delivery → render-glb verifies the result
- Compressing models for web delivery
- SKILL.md covers Zero-Setup with bunx, Quick Start, CAD Workflow Integration and Compression Methods, plus 3 more sections
- Calls bunx
What it does
Gltf Transform is an agent skill from rawwerks/VibeCAD. Optimize and post-process GLB/glTF 3D models. Use when compressing models for web delivery, reducing file size, simplifying geometry, inspecting model stats, merging models, or converting textures. Triggers on: optimize GLB, compress model, reduce file size, simplify mesh, draco compression, meshopt, webp textures, inspect model, merge GLB, model optimization.
Its SKILL.md is about 830 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Game Development, covering 3D graphics and WebGL. The repository describes itself as: A library of Claude Code skills for teaching coding agents how to use various CAD tools. The licence is MIT.
When your agent uses it
- Compressing models for web delivery
- Reducing file size
- Simplifying geometry
- Inspecting model stats
Example prompts
- “/gltf-transform”
Workflow steps
3 steps, taken from the first numbered list in SKILL.md.
- build123d exports high-quality CAD geometry
- gltf-transform compresses for web delivery
- render-glb verifies the result
What it can do on your machine
Read from SKILL.md and the folder at commit 609e888. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
bunx
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
gltf-transform.devgithub.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Gltf Transform loads about 825 tokens when it runs. Until then it costs about 94 tokens; SKILL.md has 169 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from rawwerks/VibeCAD at commit 609e888, republished under its MIT licence (© rawwerks). 169 words, ~825 tokens.
Download SKILL.mdSave it as
.claude/skills/gltf-transform/SKILL.md (or your agent's skills folder).- name
- gltf-transform
- description
- Optimize and post-process GLB/glTF 3D models. Use when compressing models for web delivery, reducing file size, simplifying geometry, inspecting model stats, merging models, or converting textures. Triggers on: optimize GLB, compress model, reduce file size, simplify mesh, draco compression, meshopt, webp textures, inspect model, merge GLB, model optimization.
glTF Transform
Post-process GLB/glTF files: optimize, compress, inspect, and transform 3D models.
- CLI docs: https://gltf-transform.dev/cli
- GitHub: https://github.com/donmccurdy/glTF-Transform
- npm:
@gltf-transform/cli
Zero-Setup with bunx
No installation required. Run any command with:
bunx @gltf-transform/cli <command> [args]First run downloads the tool, subsequent runs are instant.
Quick Start
# Inspect model stats first
bunx @gltf-transform/cli inspect model.glb
# One-command optimization (good defaults)
bunx @gltf-transform/cli optimize input.glb output.glb --compress draco --texture-compress webpCAD Workflow Integration
Typical pipeline after generating models with build123d:
create geometry → export GLB → optimize → verify visually- build123d exports high-quality CAD geometry
- gltf-transform compresses for web delivery
- render-glb verifies the result
Compression Methods
| Method | Best For | Trade-offs |
|---|---|---|
| Draco | Web delivery, Three.js | Smallest geometry, requires decoder |
| Meshopt | Universal, animations | Good compression + animation support |
| Quantize | Compatibility | No decoder needed, moderate compression |
# Draco - best geometry compression
bunx @gltf-transform/cli draco input.glb output.glb
# Meshopt - geometry + animation compression
bunx @gltf-transform/cli meshopt input.glb output.glb
# Quantize only - no external decoder needed
bunx @gltf-transform/cli quantize input.glb output.glbTexture Compression
# WebP - good compression, wide browser support
bunx @gltf-transform/cli webp input.glb output.glb
# Resize large textures
bunx @gltf-transform/cli resize input.glb output.glb --width 1024 --height 1024Common Operations
Inspect Model Stats
bunx @gltf-transform/cli inspect model.glbShows vertex count, file size breakdown, texture sizes - helps decide what to optimize.
Simplify Geometry
# Weld duplicate vertices first
bunx @gltf-transform/cli weld input.glb temp.glb
# Then simplify
bunx @gltf-transform/cli simplify temp.glb output.glb --ratio 0.5Useful for CAD models which often have more detail than needed for web viewing.
Merge Multiple Models
bunx @gltf-transform/cli merge part1.glb part2.glb assembly.glbAggressive Optimization
bunx @gltf-transform/cli optimize input.glb output.glb \
--compress draco \
--texture-compress webp \
--simplify true \
--simplify-ratio 0.5When to Use
| Scenario | Commands |
|---|---|
| Web delivery | optimize --compress draco --texture-compress webp |
| Check model stats | inspect |
| High-poly CAD model | weld then simplify --ratio 0.5 |
| Combine parts | merge |
| Debug issues | inspect then targeted fixes |
© rawwerks, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in plugins/gltf-transform/skills/gltf-transform of rawwerks/VibeCAD.
Open the folder on GitHubat commit 609e888
Compare with similar skills
Gltf Transform next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Gltf Transform this skillrawwerks/VibeCAD | 121 | — | ~825 | Automated safety check: Pass | MIT | |
| Image to Three.js Modelimg2threejs/img2threejs | 18k | 1 repos | ~8.2k | Automated safety check: Pass | Apache-2.0 | |
| Web CloneJane-xiaoer/claude-skill-web-clone | 1k | 1 repos | ~2.7k | Automated safety check: Pass | MIT | |
| Threejs Game Directormajidmanzarpour/threejs-game-skills | 2.5k | — | ~2.2k | Automated safety check: Pass | MIT | |
| Game Asset Generatorhtdt/godogen | 7.1k | — | ~2.8k | Automated safety check: Pass | MIT | |
| Threejs Gameplay Systemsvalkor-ai/loom | 1.2k | 1 repos | ~1.4k | Automated safety check: Pass | Apache-2.0 |
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Related
Categories
Questions about Gltf Transform
What does Gltf Transform do?
Optimize and post-process GLB/glTF 3D models. An agent skill from rawwerks/VibeCAD. Gltf Transform is an agent skill from rawwerks/VibeCAD. Optimize and post-process GLB/glTF 3D models.
When should I use Gltf Transform?
Gltf Transform fits situations like: compressing models for web delivery; reducing file size; simplifying geometry; inspecting model stats.
How do I install Gltf Transform in Claude Code?
Run `npx skills add rawwerks/VibeCAD --skill gltf-transform -a claude-code`. Or copy the skill folder (plugins/gltf-transform/skills/gltf-transform in rawwerks/VibeCAD) into .claude/skills/gltf-transform in your project. Claude Code loads it when a task matches its description.
How do I install Gltf Transform in Codex?
Run `npx skills add rawwerks/VibeCAD --skill gltf-transform -a codex`. Or copy the skill folder (plugins/gltf-transform/skills/gltf-transform in rawwerks/VibeCAD) into .agents/skills/gltf-transform in your project. Codex loads it when a task matches its description.
Can I use Gltf Transform in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add rawwerks/VibeCAD --skill gltf-transform -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/gltf-transform, .gemini/skills/gltf-transform, .github/skills/gltf-transform and .opencode/skills/gltf-transform in your project.
What does Gltf Transform need to run?
Going by SKILL.md and its folder, Gltf Transform needs the command-line tools its instructions call (bunx).
Does Gltf Transform access the network?
SKILL.md names 2 domains. As links in the text: gltf-transform.dev and github.com. This is read from the text; nothing was executed.
Is Gltf Transform safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Gltf Transform use?
Gltf Transform is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Gltf Transform use?
About 825 tokens (SKILL.md is roughly 3.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Gltf Transform?
Skills that share tags, products or a category with Gltf Transform: Image to Three.js Model (img2threejs/img2threejs, 18k stars), Web Clone (Jane-xiaoer/claude-skill-web-clone, 1k stars), Threejs Game Director (majidmanzarpour/threejs-game-skills, 2.5k stars) and Game Asset Generator (htdt/godogen, 7.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Gltf Transform?
rawwerks (a GitHub user) maintains it in rawwerks/VibeCAD, which has 121 GitHub stars. The repository holds 4 skills in this directory. The repository was last updated on January 5, 2026.
Source: rawwerks/VibeCAD on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.