The 10% problem
Gumroad is a solid general-purpose platform. But its 10% fee compounds quickly. If you sell a $10 model 500 times, that's $500 in fees — money that went to the platform instead of you. At $20 models, 500 sales = $1,000 gone.
Proofly's model is different: sellers keep 100% of the sale price. The platform earns a flat fee paid by the buyer, not the creator. This isn't a promotional rate — it's how the business works.
Revenue calculator
| Platform | You receive | Platform takes |
|---|---|---|
| Gumroad (10%) | $900 | $100 |
| Proofly (0%) | $1,000 | $0 |
You keep $100 more on Proofly vs Gumroad.
Buyers download blind on Gumroad
Gumroad lets you upload images and a description — but there's no way for a buyer to see the actual 3D geometry before purchasing. They're trusting your screenshots.
This matters because 3D print buyers specifically want to inspect topology, overhang angles, and wall thickness before committing. Static renders can hide problems that only show up after slicing.
Proofly embeds a full WebGL viewer on every listing page. Buyers rotate, zoom, and inspect the model directly in the browser — no plugin, no download, no friction. Higher buyer confidence = higher conversion.
What happens when someone leaks your file?
Gumroad doesn't help you trace a pirated file after the fact. Once a buyer downloads your STL and shares it on a forum, you have no forensic way to identify the source.
Proofly's HiddenMark system embeds a unique steganographic code into every downloaded mesh — a different code per buyer, per purchase. The code is embedded inside the mesh geometry, not in metadata (which gets stripped). If a file surfaces on a piracy site, uploading it to proofly.store/hiddenmark reveals exactly which purchase it came from.
🔐 HiddenMark™
Every paid download on Proofly is automatically fingerprinted. You don't need to do anything — it happens at the time of purchase.
How HiddenMark works →You don't have to choose
Proofly doesn't require exclusivity. If you have an existing Gumroad catalog, you can cross-list on Proofly without removing anything. Many creators treat Proofly as their primary storefront for 3D-print buyers while keeping Gumroad for existing customers.
Uploading a model takes about 2 minutes. The 3D viewer is automatic — just upload the file and Proofly generates the viewer. No extra steps.
Frequently asked questions
What percentage does Gumroad take from 3D model sales?
Gumroad charges 10% of every sale. On a $10 model at 100 sales, that's $100 gone to the platform. Proofly charges sellers 0% — the platform earns only from the buyer's small flat fee.
Can buyers preview 3D models before buying on Gumroad?
No. Gumroad offers static images only — buyers download blind. Proofly includes a full in-browser 3D viewer (WebGL, no plugin) on every listing.
Does Gumroad protect against 3D file piracy?
Gumroad has no piracy-tracing for 3D files. Proofly's HiddenMark embeds a unique fingerprint per buyer — if your file leaks, you can identify the source by uploading it to proofly.store/hiddenmark.
Can I sell on both Gumroad and Proofly?
Yes. Proofly has no exclusivity requirement. Cross-list freely.
What 3D formats does Proofly support?
STL, GLB, OBJ, 3MF, FBX, and ZIP packages — all with an in-browser 3D viewer and HiddenMark fingerprinting on every paid download. No plugin required for buyers.
Ready to switch?
Upload your first model in 2 minutes. No exclusivity, no monthly fee, 0% commission.
Start selling on Proofly →