Image Alt Text Checker

What the audit counts in your HTML: Counts every img element in pasted source and parses its alt attribute across double quoted, single quoted, and unquoted forms. Empty trimmed values count as missing for content images, while present non-empty alt passes. Example two images one with Cat and one bare reports two images one missing fifty percent have alt plus first missing tag excerpt. Total missing and percent quantify gaps from five images on Austin startups to five hundred on Chicago publishers.

Why alt decides USA accessibility and SEO: Alt text lets screen readers like JAWS and VoiceOver describe images to blind users navigating Seattle campuses and federal portals, satisfying WCAG 1.1.1 Non-text Content for Section 508. Missing alt on product photos blocks purchase decisions for Miami shoppers using assistive tech and invites demand letters that have surged for Texas retailers. Search engines use alt for image search ranking in Los Angeles fashion and for page relevance when images carry topical signals.

Empty versus decorative versus informative alt: Empty alt alt double quotes is intentional for decorative dividers and icons that repeat nearby text, so they stay silent and are not flagged as errors here but counted missing for stricter pre-publish review. Informative product, chart, and team photos need specific alt like Red cotton crewneck front view on model, not vague image or photo, to convey meaning without seeing the picture from Dallas to Boston.

Common USA patterns that trigger missing flags: Shopify product grids where app injects img without alt in Miami stores. WordPress media library uploads where alt field left blank in Denver blogs. React image components with src but no alt prop in Seattle SaaS help centers. Icons where aria hidden should be used instead of missing alt. Fix by adding alt to content images and converting decorative icons to aria hidden or empty alt with role presentation.

Workflow for large USA sites before launch: Paste rendered HTML from staging, not CMS raw blocks, to capture final DOM after lazy loading in Next.js apps from Austin to Manhattan. Run header, main, and footer separately to isolate template culprits like footers with ten social icons missing alt. Track totals in QA tickets with dates like 09/09/2026 and aim for ninety-five percent coverage, allowing only decorative empties.

Privacy, limits, and pairing for USA publishing: All parsing stays local with no uploads or image fetches, safe for embargoed campaigns and product drops. Tool reports alt presence only and cannot judge quality, length, or keyword stuffing, which needs editorial review for concise fifty to one hundred characters. Pair with heading hierarchy validator that checks outline order and with broken link checker that flags dead image sources for fully accessible USA launches.