Technical Requirements

Kastavo works on all major modern browsers, including Google Chrome, Microsoft Edge, Mozilla Firefox, Safari and other browsers built on the same web standards. No specific browser or additional plugin is required.

Most of Kastavo's tools rely on JavaScript to work, since calculations and conversions happen directly in your browser. Make sure JavaScript is enabled in your browser settings.

Kastavo was built with a responsive design, adapted for desktop, tablet and mobile screens. You can use any tool from whichever device you prefer, without losing functionality.

None of Kastavo's tools require a download or installation. Just open the site in your browser and start using it right away.

Some tools may use browser features, such as copying to the clipboard or downloading generated files. These actions always depend on explicit permission from your browser or a direct action from you, like clicking a button — Kastavo never accesses these features without that interaction.

We recommend always keeping your browser updated to the latest version. This ensures better compatibility, more security, and access to the most modern web features used by Kastavo.

Kastavo offers tools that work directly in your browser, as well as others that may depend on external services to provide up-to-date information or perform certain functionality. When applicable, the need for an internet connection is part of how that specific tool works.

If a tool isn't working as expected, try, in this order: clearing your browser cache; updating your browser to the latest version; reloading the page; and, finally, testing in a different browser. These steps resolve the vast majority of technical problems.