How it works
Three steps. No sign-up. No file size dance. No "please install this app" email.
Drop your file
Go to geometryviewer.com and drag any STL, OBJ, GLTF, GLB, or 3MF file onto the page. It renders instantly.
Click Share
Hit the Share button in the toolbar. You'll get a unique URL like geometryviewer.com/v/abc123. Copy it.
Send the link
Paste it in email, Slack, Discord, Notion, WhatsApp, iMessage — anywhere. The recipient clicks and sees the model in full 3D. On their phone, they can place it in AR.
Where your link works
Rich previews on social platforms. Interactive embeds in docs tools. Full 3D everywhere else.
Discord
Rich preview card with thumbnail
Slack
Rich preview card with thumbnail
Notion
Auto-embeds as interactive 3D viewer
Ghost / Medium
Auto-embeds via oEmbed
Clickable link — opens in browser
WhatsApp / iMessage
Link preview with thumbnail
Shareable as a link post
Any website
Embed with 2 lines of code
Who uses this
Freelance designers
Send a design proof to your client. They inspect it from every angle in their browser. No "please install Blender" email. No file attachment limits.
3D print services
Show customers exactly what their print will look like — with material presets and AR to check real-world size. Close the deal before printing.
Engineering teams
Share a part revision in Slack. The whole team can inspect it without opening CAD software. Link goes in the Jira ticket for the record.
Educators
Post a model link in Google Classroom. Every student sees the same interactive 3D view. Works on Chromebooks, iPads, phones.
Why not just email the file?
Because 3D files are awkward to share as attachments:
- File size — STL files can be 50-200MB. Email limits are usually 25MB. Cloud links require the recipient to download and find software to open it.
- Software required — Your client doesn't have Blender, MeshLab, or a slicer. They can't open the file. You end up sending screenshots instead.
- No context — A downloaded file shows nothing about scale, materials, or how it looks from the back. A GeometryViewer link shows everything.
A shareable link solves all three: no size limit, no software needed, full 3D + AR context.
Privacy
When you share a model, it's stored on our servers for 30 days so the link works. After that, it's automatically deleted. We don't index shared models, don't show them publicly, and don't use them for anything. If you want the model to stay completely on your device, use the viewer without the share feature — all rendering is client-side.
Frequently asked questions
Does the recipient need to install anything?
No. They click the link and the model opens in their browser. Works on any device — Windows, Mac, Linux, Chromebook, iPhone, Android.
Do I need an account?
No. Neither you nor the recipient need an account. Upload, get a link, share it.
How long do links stay active?
30 days. The model is automatically deleted after that. If you need permanent hosting, use the embed feature on your own website.
Can the recipient view in AR?
Yes. On iPhone (Quick Look) and Android (WebXR), the recipient can tap View in AR to place the model in their room at real-world scale.
Does it show a preview in Discord and Slack?
Yes. GeometryViewer links generate rich preview cards with a rendered thumbnail. In Notion and Ghost, the link auto-embeds as a full interactive viewer.
What file formats can I share?
STL (binary and ASCII), OBJ, GLTF, GLB, and 3MF. Format is auto-detected.
Also see: Embed on websites · Embed in Notion · AR viewer