{"id":"ia.image-alt","name":"Image alt text","verify":{"command":null,"rescan":"isagentready results {domain} --checkpoint ia.image-alt","expect":null},"fix":{"steps":[{"action":"Add an alt attribute that describes the content of each informative image.","order":1,"language":"html","code_example":"<img src=\"chart.png\" alt=\"Revenue grew 20% in 2026\">"},{"action":"Use alt=\"\" for decorative images.","order":2,"language":null,"code_example":null}],"summary":"Give each content image a descriptive alt text and decorative images an empty alt.","skill":{"name":"content-semantics","anchor":"ia.image-alt"}},"category":"semantics","aggregate":null,"references":[{"title":"WCAG Non-text Content","kind":"spec","url":"https://www.w3.org/WAI/WCAG22/Understanding/non-text-content.html"},{"title":"MDN img alt attribute","kind":"guide","url":"https://developer.mozilla.org/en-US/docs/Web/HTML/Element/img#alt"}],"stage":"read","lifecycle":{"introduced":"2026-08-24","revised":[],"retired":null,"replaced_by":null},"methodology_version":"2026-10-22","evidence_tier":"standard","evidence_source":{"title":"WCAG Non-text Content","url":"https://www.w3.org/WAI/WCAG22/Understanding/non-text-content.html"},"why":"Some browser agents can inspect screenshots, but image understanding varies by access mode. Descriptive alt text provides a durable machine-readable description of image content and context.","profiles":["ai_search_visibility","browser_agent_usability"],"score_role":"core","legacy_id":"3.5","i18n":{"nl":{"name":"Alt-tekst bij afbeeldingen","steps":["Voeg een alt-attribuut toe dat de inhoud van elke informatieve afbeelding beschrijft.","Gebruik alt=\"\" voor decoratieve afbeeldingen."],"why":"Sommige browseragents bekijken screenshots, maar beeldbegrip verschilt per toegangsmodus. Beschrijvende alt-tekst geeft een blijvende machineleesbare beschrijving van de afbeelding.","fix_summary":"Geef elke contentafbeelding een beschrijvende alt-tekst en decoratieve afbeeldingen een lege alt.","verify_expect":null}},"ar_practice_ids":[],"strength":"MUST","ar_mapping":"none","evidence_type":"recommendation","detail_url":"https://isagentready.com/en/methodology/checkpoints/ia.image-alt","maturity":"essential","applicability":{"mode":"always","condition":null,"surfaces":["website"]}}