The game itself doesn't offer a built-in zoom feature. However, you can enlarge the webpage using your browser's on-screen controls. Here’s how to do it without keyboard shortcuts:

On Windows (using Google Chrome or similar browsers):

• Click the three-dot menu icon in the top-right corner of your browser window.
• Look for the "Zoom" option in the menu. You’ll see buttons labeled “+” (to zoom in) and “–” (to zoom out).
• Click “+” until the page is at a comfortable size, and click “–” to reduce it.
• To reset, click the zoom percentage and select 100% or use the “Reset” button if available.

On Mac (using Chrome, Safari, or other browsers):

• In Chrome, click the three-dot menu icon in the upper-right corner. Under the "Zoom" section, use the “+” and “–” buttons to adjust the size.
• In Safari, go to the top menu bar and select View > Zoom In or View > Zoom Out. Alternatively, click the "Zoom" controls if your toolbar displays them.
• To return to the default size, select View > Actual Size (or the equivalent reset option).

These browser controls adjust the overall webpage view, letting you see your board larger without needing any in-game zoom option.