WCAG in Plain English

Content must remain readable and usable in both portrait and landscape orientation, unless a specific one is essential (e.g. in a piano app that requires landscape to show the full keyboard).

Content remains functional and easy to read when; zoomed to 400% or; viewed at 320px width, without needing to scroll in two directions (except for tables, maps, and similar content).

When additional content appears on hover or keyboard focus (including long press on touch), it must stay visible until dismissed or no longer valid, be dismissible (e.g. using the key), and remain visible when hovered or focused.

Actions that rely on gestures (like swiping or pinching) must also be possible using a single tap, click, or button.

Actions must not trigger on press or touch down. They must only trigger on release (like mouse-up or finger lift).

If an action can be triggered by motion (like shaking or tilting the device), it must also work without motion, and be possible to turn off motion-based input.

Targets for touch or mouse must be at least 44×44px, unless they are part of a sentence or block of text, near another target with the same function that meets the size, or in a context where size can’t be increased.

It must be possible to switch between input types (mouse, keyboard, touch, voice) without losing access to any functionality.

Actions that require dragging (like reordering) must also be possible using buttons or another method that does not require dragging.

Targets must be at least 24×24px, unless they are part of a sentence or block of text, surrounded by enough space, or near another target with the same function that meets the size.