Legal
Draft for legal review.
Company details: who runs preslice and how to reach us.
Privacy notice
LovLar Dev AB is the controller. Your .3mf stays in your browser; see
how preslice handles your file.
| Data | Why | Legal basis | Kept |
|---|---|---|---|
| IP address and a request log | Run and protect the service | Legitimate interest | IP in memory for 30 minutes, logs 30 days |
| Convert request: print settings and picked hardware | Return the converted settings | Legitimate interest | Not kept |
| Hardware named in a convert request | Build the public catalog | Legitimate interest | Counts only, while the catalog exists, not linked to you |
| Email to us | Answer it | Legitimate interest | Stored in the EU |
Recipients: Cloudflare, Inc. (US) delivers the site and API, under the EU-US Data Privacy Framework with standard contractual clauses as fallback (DPA). Hetzner Online GmbH hosts the server in the EU. We pass on reports of threats to life or safety to the police.
You can ask to access, correct or delete your data, or object to its use, at
feedback@lovlar.dev. You can complain to IMY, Sweden's data protection
authority, at imy.se.
Terms
The service is free and provided as is. LovLar Dev AB is not liable for loss from using it, such as a failed print or a damaged printer. This does not limit liability for death or personal injury, or any right under mandatory consumer law.
Your files stay yours. Convert is in beta: check a converted file in the target slicer before you print.
We remove catalog entries that are unlawful or wrong. Email feedback@lovlar.dev with the entry, what is wrong, and your name. A person decides, and we reply with the decision and why. Reply to that email to ask us to look again.
Licenses
preslice's own code is copyright 2026 LovLar Dev AB, all rights reserved.
preslice uses open-source software and the Onest and Red Hat Mono fonts. Their licenses are published in full.
Convert uses unmodified slicer profiles, and the app shows each slicer's own setting descriptions. Both stay under the slicer's license. Each name links to the exact source used:
| Source | License |
|---|---|
| PrusaSlicer | AGPL-3.0 |
| PrusaSlicer Prusa profiles | AGPL-3.0, via PrusaSlicer |
| PrusaSlicer other-brand profiles | AGPL-3.0, via PrusaSlicer |
| PrusaSlicer Pro HT profiles | AGPL-3.0, via PrusaSlicer |
| PrusaSlicer Pro AFS profiles | AGPL-3.0, via PrusaSlicer |
| Bambu Studio | AGPL-3.0 |
| OrcaSlicer | AGPL-3.0 |
| Creality Print | AGPL-3.0 |
| UltiMaker Cura | LGPL-3.0 |
| Cura materials | CC0-1.0 |
The PrusaSlicer profile repositories carry no license file. PrusaSlicer itself publishes the same profiles under AGPL-3.0, so they ship under it.
A converted file, and the sample file, contain settings from these profiles under the same licenses.