Privacy

Effective 26 July 2026.

PartMode is a local-first browser CAD application. Your project geometry and editing history stay in browser storage unless you explicitly download or open a project file.

Who is responsible

PartMode is operated by erphq. Privacy requests can be sent to [email protected].

Cookies and analytics

PartMode does not use analytics, advertising trackers, third-party tracking pixels, or analytics cookies. After you make a choice, the browser sets one host-only first-party cookie to remember that you selected essential storage only. That cookie does not identify you and does not grant consent to future analytics.

See the cookie details and settings page for its exact name, purpose, duration, and deletion control.

Essential browser storage

PartMode uses localStorage and IndexedDB for local project recovery, application preferences, first-run state, and CAD session continuity. This storage is necessary for the local-first features you request and is not used to track you across websites.

Network requests

The CAD application loads its HTML, JavaScript, WebAssembly kernel, styles, and icons from partmode.com. CAD evaluation happens in your browser and no account is required. As with any website, PartMode and its delivery and security provider, Cloudflare, receive connection metadata such as IP address, user agent, requested URL, and request time as needed to deliver and protect the service.

Retention and your choices

The preference cookie expires after 180 days. Local CAD projects remain on your device until you delete them in PartMode or clear this site's browser data. PartMode has no account profile that connects local projects to you.

You can delete the preference cookie from cookie settings or your browser. You can also ask about access, deletion, restriction, portability, or objection by contacting erphq. Where applicable, you may complain to your local data-protection authority.

Future optional analytics

If optional analytics are introduced later, they will remain disabled until you make a separate, informed opt-in choice. The current essential-only cookie is not consent for future analytics.

Contact

Questions about PartMode privacy can be sent to [email protected].