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URL: https://dev.to/markyu/11-free-3d-asset-sites-for-games-blender-and-webgl-ah2

ā‡± Free 3D Asset Sites Iā€™d Actually Use in a WebGL Project - DEV Community

Free 3D assets are great until one of them adds 40MB to your landing page.

That is the part many asset lists skip. The source matters, but the workflow after download matters more.

My filter is simple:

license clear?
format usable?
polycount reasonable?
textures optimized?
attribution saved?

If any answer is unclear, I do not put it into a production project.

Sites Worth Checking

Site Best for Watch out
Poly Haven HDRIs, textures, models large texture files
Sketchfab broad model variety license varies per asset
Kenney game-ready low-poly assets style may be specific
Quaternius low-poly characters/props attribution/license check
ambientCG PBR textures optimize resolution
OpenGameArt game assets quality varies a lot
BlenderKit Blender workflow account/license details
CGTrader Free realistic models cleanup often needed
TurboSquid Free mixed models formats vary
Itch.io asset packs indie game style read pack license
Smithsonian 3D historical scans not always game-ready

My Import Workflow

I do not drop assets straight into a Three.js scene anymore.

I do this first:

  1. Open in Blender.
  2. Remove unused meshes/materials.
  3. Apply scale/rotation.
  4. Reduce texture size if needed.
  5. Export as .glb.
  6. Compress with gltf-transform.

Example:

npx gltf-transform inspect model.glb
npx gltf-transform optimize model.glb model.optimized.glb

This often cuts the file size dramatically.

License Notes Are Not Optional

Create a small file:

assets/licenses.md

Track:

Asset: wooden-crate.glb
Source: Poly Haven
Author: ...
License: CC0
Downloaded: 2026-06-16
Changes: resized textures, exported GLB

This feels tedious until you need to publish, sell, or open-source the project.

WebGL Performance Check

Before shipping:

  • keep GLB files small
  • compress textures
  • avoid unnecessary 4K maps
  • merge meshes where practical
  • lazy-load heavy models
  • test on a low-end laptop or phone

The best free asset is still bad if it tanks your frame rate.

Final Thought

Free assets can make a prototype feel real fast. Just do the boring cleanup work before production.

What free 3D asset site has saved one of your projects?