Accessibility

Last updated: 6 October 2026

We want Signum Average to be usable by everyone, and aim to meet the Web Content Accessibility Guidelines (WCAG) 2.1 at level AA.

What we do

• Text meets or exceeds the recommended contrast against the background, and can be enlarged without breaking the layout.
• Every chart and photograph has a text description for screen readers.
• Chart colours are tested so that readers with red-green colour blindness can tell the series apart, and series are labelled, so colour is never the only cue.
• The site works with a keyboard alone and on small screens.
• The data behind every chart can be downloaded, so the numbers are available without the picture.

Known limits

• Charts are drawings without an accompanying table on the page; the data is in a separate download.
• Our PDF reports (sent on request) and maps are not fully tagged for screen readers.
• The tracker page is slightly too wide on the narrowest phones.

Tell us. If something on the site is hard to use, write to thesignumaverage@proton.me and we will try to fix it.