Your paper never leaves your browser

Nothing leaves your device. Every paper family is drawn by a pure geometry function running in your browser — the same functions documented on the methodology page — and the exported PDF, SVG, or PNG is produced client-side with jsPDF and JSZip. There is no upload step, no rendering server, and no copy of your sheet anywhere but in the file you downloaded.

To make the site convenient between visits, a few things are written to your browser’s local storage. All of it stays on your device:

• Saved Studio configurations — named configurations you choose to save, kept in the savedConfigs store of the pss-db IndexedDB database.
• Pack items — the sheets you add to a multi-page pack, kept in the pack store of the same database, with a working copy under the pss-pack localStorage key.
• Interface preferences — your paper size choice (pss-paper-size), display unit (pss-studio-unit), pack options (pss-pack-options), and light/dark theme, all in localStorage.

Saved configurations can be deleted individually inside the Studio editor. To remove everything at once, use your browser’s site-data controls — clearing this site’s data empties both localStorage and the IndexedDB database completely. There is no account and no server-side copy, so clearing local storage removes every trace.

The site loads one analytics tool: Vercel Analytics, mounted once in the root layout. It records aggregate, privacy-respecting usage statistics — which pages are viewed, and the approximate region and device type of visitors — without tracking cookies.

Analytics never include your project content: no labels, no configuration values, no pack contents. There is no account, no email address, and no cross-site identifier to attach them to. The data is used only to understand which paper families are popular and whether pages load properly.

• No uploads of your sheets, labels, or configurations to any server.
• No server-side storage of projects or packs.
• No accounts, sign-ups, or email collection.
• No third-party advertising networks or ad trackers.
• No sale or sharing of data with anyone — there is nothing to sell.

Exported PDF and JSON files contain only what you put into them — the geometry, the labels you typed, and the formula version stamped into the metadata. Once a file leaves your browser it is entirely yours: if you email it, print it, or share it, where it goes from there is your responsibility, not this site’s.

If your printed sheet comes out at the wrong scale, that is a printer setting, not a data issue — the print calibration page computes an exact correction factor from one measurement, and it runs locally too. For the full picture of how sheets are computed and exported, start from the studio home page.