PHP HTML file upload tutorial Don’t fret if you’re a developer with an Apache web server and the goal is to code an HTML5 and PHP file upload component. Modern browsers, along with simplified ...

The dpi term should be limited to print output on a laser printer or ink-jet printer; ppi is typically reserved to the dimensions of an image as it’s stored in a file or view on a screen.

To check if an image has alt text, try selecting the image with your screen reader on. or manually "Inspect" the image in any browser.