Provide a way to zoom in and resize text up to 200% - Access Guide

Zoom in and out on what's onscreen on Mac - Apple Support (AM)

WPDS - Text size, fonts and zoom settings

Resize content - Low Vision Accessibility Task Force

Adjusting Outlook's Zoom Setting in Email

Linearly Scale font-size with CSS clamp() Based on the Viewport

Designing for Accessibility: How Text Resizing Works in Different Web Browsers, by Ian Savchenko, The PayPal Technology Blog

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Designing for Accessibility: How Text Resizing Works in Different Web Browsers, by Ian Savchenko, The PayPal Technology Blog

Resize content - Low Vision Accessibility Task Force

How to Resize the Canvas on Google Drawings