They copied your file.
Now find them.
STL Shield encrypts your design files — STL, SVG, DXF, 3MF and more — and plants 8 forensic watermarks. If someone leaks it, you know exactly who.
No credit card · Works with Etsy, Gumroad, Cults3D · STL · SVG · DXF · 3MF · OBJ
$ stl-shield encrypt dragon_bust.stl --mode maximum
[keygen] Deriving AES-256-GCM key... ✓
[watermark] Embedding 8 forensic markers... ✓
[encrypt] Encrypting 4.2MB mesh... ✓
[verify] GCM auth tag: OK ✓
[output] dragon_bust.stlx ready
$ stl-shield encrypt logo_design.svg
[keygen] Deriving AES-256-GCM key... ✓
[encrypt] Encrypting 128KB vector... ✓
[output] logo_design.shieldx ready
Your files are being stolen right now.
Etsy resellers repack your designs and sell them as their own
Discord & Telegram — buyers share files in private servers
Your designs appear on Thingiverse weeks later
SVG and DXF files shared freely in Facebook groups and forums
Four steps. Then it's bulletproof.
Encrypt & fingerprint your file
Upload any supported file — STL, SVG, DXF, 3MF, OBJ. We encrypt it with AES-256 and embed invisible watermarks.
Sell it anywhere
List on Etsy, Gumroad, Cults3D. Send your buyer a token.
Buyer unlocks — zero friction
They paste the token, click unlock, and their slicer opens. 30 seconds.
Catch pirates. Get takedowns.
Watchdog scans 9 marketplaces. One click generates DMCA evidence.
Built for designers, not developers.
Your buyers won’t even know it’s there
Frictionless unlock. 9 slicers supported. Works offline after first activation. Under 10MB.
8 watermarks that survive everything
Re-mesh it. Re-export it. Convert the format. The watermarks are still there, linking back to the buyer.
One click to legal action
Forensic evidence report with device fingerprint, IP, geolocation, timestamp. Ready for DMCA or court.
Multi-format protection
STL, SVG, DXF, 3MF, OBJ — one platform for 3D printing, laser cutting, CNC routing, and vinyl cutting.
One platform. Every format.
Protect files across 3D printing, laser cutting, CNC routing, and vinyl cutting.
Simple pricing. No surprises.
Free
No credit card ever. Not a trial — always free.
- 5 products
- 50 tokens / month
- Email support
5 products, no expiry
Pro
Unlimited products, priority support, piracy monitoring.
- Unlimited products
- 500 tokens / month
- Watchdog (3 platforms)
- Priority support
30-day money-back guarantee
Studio
Full platform with API, forensic reports, and onboarding.
- Unlimited everything
- Watchdog (9 platforms)
- API + CLI
- Forensic reports
- Onboarding call
Talk to a human before you commit
Frequently asked questions
No. Watermark perturbations are 0.001-0.005mm — far below any printer's resolution. They're invisible in the print and in slicer previews.
Unlocking requires a one-time internet connection to validate the token. After that, the file works offline. Slicing and printing don't need internet.
In Standard mode, the watermarked mesh reaches the slicer — a sophisticated attacker could intercept it, but the watermark makes it traceable. In Maximum mode, the mesh never leaves Rust memory.
Your encryption keys are yours. We're building a key export feature so you can always decrypt your own files. We also publish our full encryption spec — no vendor lock-in.
Standard mode works with OrcaSlicer, PrusaSlicer, Cura, Bambu Studio, Slic3r, Simplify3D, IdeaMaker, FlashPrint, and ChiTuBox. Maximum mode uses the built-in CuraEngine.
The encryption spec, file format, and watermark methods are published for transparency. The server and app source are private to prevent circumvention tools.
No. You encrypt and manage everything from the web dashboard. Your buyers need the app to unlock files — it's under 10MB and takes 30 seconds to install.