Sell ZIP Files Online —
Keep 100% of Every Sale

Multi-format bundle (highest revenue)

Print pack (multiple STL parts)

0% commission — your price is your revenue

CGTrader takes 30–35% of every ZIP sale. TurboSquid takes 20–40%. Gumroad takes 10%. Proofly takes nothing. Buyers pay a flat $1 fee per order. If your 3D character bundle sells for $50, you receive $50 (minus Stripe processing of ~$1.75) instead of losing $15–$20 to CGTrader. On 100 sales that is $1,500–$2,000 more in your pocket vs CGTrader alone.

In-browser 3D viewer — buyers inspect before buying

Proofly's viewer automatically extracts and renders the best format from your ZIP. Buyers orbit, pan, zoom, switch between solid / wireframe / clay / x-ray modes, check dimensions in mm/cm/in, and verify manifold/watertight status — before purchasing. No static screenshots. This is a key differentiator vs Gumroad, itch.io, and Etsy where buyers must purchase blind. Buyers who interact with a 3D preview convert at significantly higher rates.

HiddenMark per-buyer watermarking — trace every leaked ZIP

ZIP file piracy is common on Discord servers and Telegram groups. Proofly embeds an invisible HiddenMark code into the mesh geometry of every STL, GLB, or OBJ in your ZIP — unique per buyer. If your bundle appears where it shouldn't, upload the leaked file to the verifier to identify the exact purchase it came from. DMCA certificate included for instant takedown filing. No other 3D marketplace offers per-buyer mesh watermarking.

One listing — every format — one purchase

Instead of maintaining separate listings for STL, GLB, and FBX, put everything in one ZIP. Buyers purchase once and get all formats instantly. The viewer shows a format chip row below the preview — buyers see exactly which formats are included (STL / GLB / OBJ / FBX / 3MF / BLEND). This transparency builds trust and reduces support requests.

AI listing generation — publish in minutes

Click "Generate description" and Claude AI writes your listing title, description, and tags based on your file name, included formats, and category. Your listing is automatically translated into 20 languages — Japanese, Korean, German, Spanish, Portuguese — so buyers worldwide find your ZIP bundles. Publishing a complex multi-format pack takes under 5 minutes.

Gumroad: 10% commission + no 3D viewer

Gumroad charges 10% of every ZIP sale and shows only static images. Buyers cannot preview the 3D model inside your ZIP before purchasing. Proofly's in-browser viewer renders your GLB or STL automatically — buyers inspect the model in 3D before buying, converting at higher rates and requesting far fewer refunds. On a $40 sale, Gumroad costs you $4; Proofly costs you $0.

CGTrader: 30–35% commission + no piracy tracing

CGTrader charges 30–35% and offers no per-buyer watermarking. If your ZIP bundle is redistributed after purchase, you have no way to identify who shared it. Proofly's HiddenMark system embeds a unique code per buyer into the mesh geometry of every STL and GLB inside your ZIP — so if your bundle leaks, you identify the source immediately. On 100 sales at $40, CGTrader takes $1,200–$1,400. Proofly takes $0.

Etsy: 6.5% + listing fees + no 3D preview

Etsy charges ~6.5% transaction fee plus $0.20 per listing, renews listings every 4 months, and shows only static images for digital downloads. It is not built for 3D model bundles. Proofly is purpose-built for 3D — with polygon counts, manifold checks, format detection, dimension measurement, and in-browser preview. Buyers expect a 3D-native experience; Etsy cannot provide it.

What percentage do I keep when I sell ZIP files on Proofly?

You keep 100% of your listed price. Proofly charges 0% commission. Buyers pay a flat $1 USD platform fee per order — this covers payment processing and infrastructure. Compare this to Gumroad at 10% + $0.30, CGTrader at 30–35%, Etsy at ~6.5% + listing fee, TurboSquid at 20–40%, or Sketchfab at 30%. On a $40 3D model ZIP bundle, you receive $40 instead of losing $4–$14 to platform commissions.

What file formats can I include in my ZIP bundle on Proofly?

You can include any combination of 3D formats in your ZIP: STL (for 3D printing), GLB/GLTF (for game engines, web, AR/VR), FBX (for Unity, Unreal Engine, rigged character import), OBJ + MTL (universal compatibility), 3MF (for modern slicers), .blend (Blender source), .max (3ds Max), .c4d (Cinema 4D), plus textures, readme files, and print settings. Proofly's in-browser viewer automatically loads the best previewable format from your ZIP (GLB first, then STL, then OBJ), so buyers can inspect your model in 3D before purchasing.

How are ZIP file downloads protected from piracy?

Every purchase is automatically protected by HiddenMark — an invisible watermark embedded in the mesh geometry of the STL, GLB, or OBJ files inside your ZIP. Each buyer receives a uniquely coded copy tied to their purchase. If your 3D model bundle appears on a sharing site, Discord server, or piracy forum, upload it to proofly.store/hiddenmark to instantly identify which specific purchase was leaked. A DMCA-ready certificate with proof of authorship is generated immediately — no legal costs to get the takedown started.

Can buyers preview the 3D models inside my ZIP before purchasing?

Yes. Proofly's in-browser 3D viewer automatically extracts and renders the best previewable format from your ZIP. Buyers can orbit, pan, zoom, switch between solid / wireframe / clay / x-ray display modes, check dimensions in mm/cm/in, verify manifold/watertight status, and see the full polygon count — all in their browser before purchasing. This significantly improves conversion rates and reduces refund requests compared to selling ZIP files on platforms with only static screenshots.

Why should I sell ZIP bundles instead of individual format files?

ZIP bundles consistently sell at a 2–4× price premium compared to single-format listings. A buyer purchasing a 3D character for Unity needs the FBX. The same buyer printing it as a miniature needs the STL. A third buyer wants to modify it in Blender and needs the .blend. By packaging all three in one ZIP, you serve all three markets with a single listing — and price accordingly. Multi-format bundles priced at $30–$80 routinely outsell single-format STL-only files priced at $8–$15.

Do I need to be exclusive to sell ZIP files on Proofly?

There is no exclusivity requirement on Proofly. You can sell the same ZIP bundle on Gumroad, CGTrader, itch.io, Etsy, and Proofly simultaneously. Many 3D creators use Proofly as a zero-commission channel alongside their existing storefronts, effectively earning 100% on Proofly sales vs 70–90% elsewhere. Or they set Proofly as their primary storefront and link it from their social profiles.

How do I get paid when I sell ZIP files on Proofly?

Connect your Stripe account during onboarding — takes about 5 minutes. When a buyer purchases your ZIP bundle, Stripe transfers the sale amount directly to your Stripe account. Configure automatic weekly or monthly payouts to your bank account or debit card. Proofly never holds your money — earnings flow directly from buyer to your Stripe account via Stripe Connect. View your sales, revenue by listing, and buyer geography in Dashboard → Analytics.

Can I sell ZIP files containing just 3D printable STL files?

Absolutely. Many 3D print creators sell ZIP archives containing multiple STL parts — a character broken into separate pieces, a miniature kit with interchangeable accessories, or a scenery set with modular components. Proofly's viewer loads the first STL from the ZIP for the preview. Buyers see the model in 3D, check dimensions, and verify it is watertight before purchasing. This is especially effective for tabletop miniature creators selling complete faction packs or terrain sets.