Accessibility statement

This site aims to meet the Web Content Accessibility Guidelines 2.1 at level AA.

Body text is measured against its actual background rather than assumed: graphite on the warm page ground measures 13.68:1, and on white 14.78:1. Secondary text is placed only where it measures at least 4.5:1 at body size, and is used on the page ground only at sizes where the large-text threshold applies. The measurements are recorded in the stylesheet itself so they can be checked.

The slider on the front page is a native range input, so it works from the keyboard without any custom handling: arrow keys move a week at a time, Page Up and Page Down jump further, Home and End go to the ends.

It carries aria-valuetext expressed in weeks and months — “13 weeks, about 3 months” — rather than reading out a bare number. Named stops beside it are ordinary buttons, so anyone who would rather jump than drag can.

The chart is followed by the same four rows as an ordinary table, visible to everyone rather than hidden for screen readers only, because the table is genuinely quicker to read.

Markers are numbered and their drop lines differ in dash pattern, so nothing in the chart depends on colour alone and it still reads when printed in black and white.

The four methods stay in four columns at every screen width. They are not a carousel and they do not stack, because the value of the module is holding them against each other in one look, and a carousel takes that away.

Impact level is carried by three things at once: a written label, a marker shape, and rib density. Never by colour alone. “Negligible” is styled as a first-class result and is not dimmed or greyed relative to the others.

Every animated transition is disabled when your system asks for reduced motion.

Focus is always visible, as a two-pixel outline offset from the element, and never removed. There is a skip link to the main content as the first thing in the tab order.

The step diagram has its own print stylesheet: one sheet, black and white, diagrams still legible, everything else dropped.

The cuff diagram amplifies real movement so that it can be seen at all, and says so on its own face. If you are reading it with a screen reader, the description tells you whether the pair is past the point where it is worth acting on, which is the part that matters — but it cannot convey the shape of the curve.

Photographs carry descriptive alternative text, but a photograph of a rib structure is a hard thing to describe well, and some of those descriptions are better than others.

If part of this site is difficult or impossible for you to use, write to support@ismallk.com, describing what you were trying to do and what got in the way. We answer within one working day and will tell you plainly whether and when we can fix it.