Your image stays on your device.

What happens when you choose an image

The browser reads the file into temporary memory to determine its pixel width and height and to display a local preview. The calculator does not transmit the file, its name, or its dimensions to our server. Refreshing or closing the page clears the temporary data.

Technical protections

• No image-upload endpoint exists.
• No calculator input is written to cookies or browser storage.
• A restrictive Content Security Policy blocks outbound connections from these pages.
• Third-party analytics and advertising scripts are not present in the calculator execution environment.
• SVG uploads are blocked, and accepted image files are limited to 25 MB.

Third-party services

The current site does not load analytics or advertising services. If either is introduced later, this policy will be updated before those services are enabled.

Limits

Browser extensions, compromised devices, modified copies of this website, and the browser itself are outside the calculator’s control. Only use the official HTTPS version when the site is published.