A useful tool does not need your personal data.

Current site behavior

Paper Size Lab does not currently offer accounts, accept form submissions or run advertising. The site uses limited first-party analytics described below. Optional Google Analytics loads only after you choose Allow Google Analytics. Converter selections are handled in your browser and are not saved to an account.

Optional local print jobs

The print-preparation, print, paper-weight, label-sheet, and box-geometry tools save a job in local browser storage only when you choose Save. You can restore, export, import, or delete that browser copy from the tool. Browser storage can be cleared and is not a dependable backup; exported files remain under your control. Do not put sensitive personal or customer information in job names or notes.

Images and PDFs selected in the print-preparation workspace are read locally in the browser. Their contents are not included in a saved job or intentionally sent to Paper Size Lab. Local previews end when you clear them, replace them, or close the page.

Technical delivery data

Our hosting and security providers may process routine request information such as IP address, browser information, timestamps, requested pages, and security signals to deliver the site and protect it from abuse. Their processing is governed by their own terms and privacy notices.

Privacy-conscious first-party analytics

Paper Size Lab records anonymous page visits, landing and exit paths, scroll milestones, coarse active time, internal-link clicks, calculator starts and completions, project actions, print actions, and eventual monetization-link clicks in its own site database. A random identifier groups events only within the current browser session. A non-unique local flag reports whether this browser has visited before; no persistent visitor identifier is sent or shared with another Size Lab site. The database does not store entered dimensions, filenames, files, project names, notes, full referrer URLs, or IP addresses. Global Privacy Control or Do Not Track disables this collection. Event records are deleted after about 400 days.

External links

If you follow a link to a standards organization or another external site, that service may collect information under its own privacy policy.

Optional Google Analytics

If you allow Google Analytics, it measures page visits, the first interaction with a calculator, and successful actions such as saves, restores, exports, print requests, and local-file processing. It does not receive entered measurements, filenames, file contents, project names, or notes. Advertising and personalization signals are disabled. You can review or withdraw your choice from the cookie notice.