3D Compression That Actually Shrinks Files
Drop in a GLB, OBJ, FBX, or STL file and get a clean, web-ready compressed GLB back in seconds. Up to 90% smaller, with no visible quality loss.
Our 3D compression tool runs Draco mesh encoding and WebP texture re-encoding directly in your browser. No uploads, no servers, no sign-up — your models stay on your machine.
Upload Your 3D Model
Drag in a file or click to browse. Everything is processed locally — nothing is uploaded.
Click or drop a file
GLB · glTF · OBJ · FBX · STL · PLY
Preview
Drop a 3D file to preview it here.
Your file is processed entirely in your browser. It is never uploaded to a server, never stored, and is discarded the moment you leave this page.
Shrink 3D Files Without Losing What Matters
3D compression is the process of reducing the file size of 3D models — geometry, textures, and all — so they load faster on the web, run smoother in real-time engines, and cost less to store. Modern 3D compression uses techniques like Draco mesh encoding (which quantizes vertex data into a fraction of the original bytes) and texture re-encoding (converting PNG or JPEG textures to WebP at a chosen quality level).
Fast3D's 3D compression tool does all of this directly in your browser. There's no upload step, no server round-trip, no account. Drop in a 10 MB GLB and get back a 1 MB GLB that looks the same, ready to ship to a website, game engine, or AR experience.
Draco mesh compression
Geometry is re-encoded with Google's Draco, cutting vertex data to 10–20% of its original size with no visible difference.
WebP texture re-encode
PNG and JPEG textures are converted to WebP at the quality you choose, often halving texture bytes.
Optional mesh simplification
On the Aggressive preset, redundant triangles are merged to shrink geometry further — great for LODs and thumbnails.
Multi-format input
Drop in GLB, glTF, OBJ, FBX, STL, or PLY. We normalize to GLB so you get the web's native 3D format back.
Why Compress Your 3D Models?
Uncompressed 3D files are the silent killer of web performance. Here's what 3D compression solves.
Without 3D compression
- ✕
Painful page load
A 15 MB GLB on your landing page makes visitors wait — and most of them won't.
- ✕
Mobile data caps
Cellular users bounce when a single 3D model eats half their data budget.
- ✕
Poor SEO rankings
Google penalizes slow pages. Heavy 3D assets drag your Core Web Vitals down.
- ✕
Bloated storage bills
CDN and cloud storage costs scale with bytes. Compressed models cost less to host.
- ✕
Bad AR and web performance
Uncompressed meshes stutter on mid-range phones and headsets, ruining the experience.
After Fast3D compression
Up to 90% smaller files
Most GLB models shrink to 10–50% of their original size depending on the preset you choose.
Faster pages, happier users
Compressed models load in a fraction of a second, even on mobile networks.
Better Core Web Vitals
Smaller assets mean faster LCP and lower bounce rates — both of which help SEO.
Lower hosting costs
Halve your storage and bandwidth bill by shipping half the bytes.
Smooth on every device
Optimized meshes render smoothly on phones, tablets, and low-end laptops.
Web-ready GLB output
Every compression job outputs a clean GLB — the standard format for web, Three.js, model-viewer, and Babylon.js.
How to Compress a 3D Model
Three steps, about ten seconds. No software, no sign-up, no upload.
Drop your file
Drag in a GLB, glTF, OBJ, FBX, STL, or PLY file. It loads instantly in the preview.
Pick a preset
Choose Gentle, Balanced, or Aggressive depending on how small you need the output to be.
Download the compressed GLB
Hit Compress, watch the size drop, and download the optimized file.
Features Built for Real 3D Workflows
Everything you need from a modern 3D compression tool — and nothing you don't.
100% private
Compression runs in your browser via WebAssembly. Your files never touch a server.
Draco + WebP pipeline
Industry-standard mesh and texture compression, tuned into three sensible presets.
Free with no limits
Compress as many models as you want. No daily cap, no account, no watermark.
Instant preview
See your model before and after compression to verify quality at a glance.
Works on any OS
Runs in any modern browser — Windows, macOS, Linux, iOS, Android.
Multi-format input
GLB, glTF, OBJ, FBX, STL, and PLY are all supported out of the box.
Built for Everyone Who Ships 3D
From indie game devs to enterprise web teams, 3D compression fits into every pipeline.
Web & e-commerce
Embed product 3D viewers without wrecking your page load. Compressed GLB loads in under a second.
Game developers
Build smaller builds. Use compressed meshes as LOD levels and ship a leaner game.
AR & VR creators
Get models under the strict byte budgets that mobile AR and WebXR demand.
3D artists & designers
Share portfolio pieces that load instantly, even on a phone.
Engineers & manufacturers
Compress CAD-derived STL and PLY scans for faster web previews and client reviews.
Educators & students
Embed interactive 3D in lessons without worrying about campus Wi-Fi.
Loved by 3D Creators Worldwide
Real feedback from developers, artists, and product teams using Fast3D's 3D compression.
“Cut our product page's GLB from 12 MB to 1.4 MB. Page load dropped from 8 seconds to under 2.”
Marcus Lindqvist
Frontend Lead, Nordic Furniture Co.
“I ship WebGL games and every kilobyte matters. This is the first browser compressor that actually respects geometry quality.”
Aisha Rahman
Indie game developer
“Tried it on a 90 MB FBX scan — got back a 7 MB GLB that looked identical. The Aggressive preset is wild.”
Diego Ferreira
3D scanning technician
“Finally a compression tool that doesn't ask me to make an account. I drop the file, I get a smaller file, done.”
Yuki Tanaka
AR prototype engineer
Frequently Asked Questions About 3D Compression
Everything you might want to know about compressing 3D models with Fast3D.
Still have questions? Drop a file in the widget above and see for yourself — it's free.
Compress Your First 3D Model in Seconds
No install, no sign-up, no upload. Drop in a file, pick a preset, and download a smaller GLB.
Try 3D Compression Free100% browser-based · Private by default · No watermark ever