Reviewed against the current product on July 18, 2026 · Published by Unity Asset Exporter.
You were sent a .unitypackage and just want to look inside — but the only "official" way is to
install Unity, a 5+ GB editor plus a hub, an account and a project just to peek at a file. You don't need any
of that.
What a .unitypackage actually is
Despite the custom extension, a .unitypackage is nothing exotic: it's a gzip-compressed
tar archive. Rename it to .tar.gz and a normal archiver will open it. Inside you'll find
one folder per asset, each named after the asset's GUID (a 32-character hex id) rather than a
filename. A typical GUID folder holds:
asset— the actual file bytes (the FBX, PNG, material, etc.).asset.meta— Unity's YAML metadata, including that GUID and import settings.pathname— the original project path likeAssets/Models/Car.fbx.
That GUID layout is why loose extraction is awkward — the real names and the links between models, materials and textures live in metadata, not in the folder structure.
Your options
- Install Unity. Correct, but heavy: gigabytes of download and a full project setup just to view assets.
- CLI / script extractors. Command-line scripts reconstruct the original paths on disk. Fast, but install-required, and they output loose files with textures still unlinked.
- This browser tool. Drop the package, browse the file tree, preview models in 3D, download individual files or a ZIP — and optionally export models as textured GLB. No install.
Why browser-based wins for a quick look
For "what's in here and does the model look right?", nothing beats a page that unpacks the archive in memory and shows you the tree plus a live 3D preview in seconds. There's nothing to install, it works on any OS, and because the gzip/tar parsing and rendering all happen client-side, it's fast on large packages too.
Privacy: files never leave your device
This matters for paid Asset Store content and client work. The package is read with the browser's own
FileReader and processed entirely in JavaScript on your machine. Nothing is uploaded
— there's no server to send it to. Close the tab and it's gone.
Honest limits
Model support is FBX (7.0+) today. PNG, JPG, TGA, WebP, BMP and GIF plus common PSD, TIF/TIFF, DDS, HDR and EXR variants can be previewed in-browser; every original file remains available for raw extraction too.