landmark present - **[PASS]** 2

landmark(s) found - **[WARNING]** 2 of 2

elements are unlabeled — Multiple navigations need aria-label to distinguish them for screen readers. - **[WARNING]** Skip navigation link is missing (WCAG 2.4.1) — Add a skip link as the first focusable element so keyboard users can bypass repeated navigation. ### Heading Hierarchy (C — 65/100) *18 headings* - **[WARNING]** Multiple H1 headings (11 found) — A page should have only one H1. Multiple H1s dilute the document outline. - **[WARNING]** 5 empty heading(s) — Empty headings appear in the document outline but provide no information. ### Alt Text Quality (A+ — 98/100) *All 63 images OK* - **[INFO]** 1 image(s) with alt text over 125 characters - **[PASS]** 62 image(s) with good alt text ### Form Accessibility (A — 85/100) *1 of 3 controls have issues* - **[CRITICAL]** 1 control(s) without accessible label — Form controls need a , aria-label, or aria-labelledby for screen readers. - **[PASS]** 2 control(s) properly labeled ### Link & Button Quality (C — 68/100) *4 issue(s) across 411 links and 59 buttons* - **[WARNING]** 86 link(s) open in new tab without warning — Add '(opens in new tab)' to link text or aria-label. - **[CRITICAL]** 4 button(s) with no accessible text — Icon-only buttons need an aria-label so screen readers can announce them. - **[PASS]** 325 link(s) with descriptive text --- ## UX ### 404 Error Page (C — 65/100) *HTTP 404, custom page* - **[PASS]** Correct 404 status code returned - **[PASS]** Custom styled 404 page - **[PASS]** Homepage link present on 404 page ### Favicon & Branding (D — 40/100) *3 icon(s) detected* - **[WARNING]** No favicon.ico at site root — Some older browsers, bookmark tools, and RSS readers look for /favicon.ico. Add one as a fallback. - **[PASS]** HTML icon links detected - **[PASS]** Apple touch icon present ### Web Manifest (F — 30/100) *Invalid JSON* - **[WARNING]** Manifest contains invalid JSON — Manifest at https://snu.ac.kr/site.webmanifest contains invalid JSON. Browsers cannot parse it. ### Dark Mode Support (D — 40/100) *No dark mode signals* - **[INFO]** No dark mode signals detected — Consider adding CSS with @media (prefers-color-scheme: dark) and . - **[INFO]** Detection limited to meta tags and inline styles — External CSS files may contain prefers-color-scheme rules not visible to this scan. ### Print Stylesheet (D — 40/100) *No print styles* - **[INFO]** No print-specific styles detected — When users print this page, they get the screen layout including navigation and non-essential elements. Add @media print rules to hide navigation and optimize layout for paper. ### Navigation UX (F — 15/100) *No navigation patterns* - **[PASS]** 2 navigation landmark(s) detected - **[INFO]** No breadcrumbs, search, or skip link detected — These navigation aids help users orient themselves and find content efficiently, especially on large sites. --- ## SEO ### Canonical URL (A — 85/100) *Minor issues* - **[PASS]** Canonical tag present - **[WARNING]** Canonical does not match final URL (https://snu.ac.kr) - **[PASS]** Canonical target returns 200 - **[INFO]** Canonical points to a different domain ### Meta Tags (A — 85/100) *Title: 15 chars* - **[PASS]** Page title is set - **[WARNING]** Title is only 15 characters — consider expanding - **[INFO]** Title and H1 have very different wording — Alignment helps users confirm they've reached the right page. ### Content Depth (A+ — 100/100) *1279 words, Easy* - **[PASS]** Page has 1279 words — good depth for search engines - **[INFO]** Reading level: Easy (grade 8) ### Internal Links (A+ — 95/100) *21 internal, 390 external* - **[PASS]** 21 internal links (5%) - **[PASS]** 100% of links use descriptive anchor text - **[INFO]** Page has 411 links — consider reducing - **[INFO]** 21 internal / 390 external links ### Image SEO (A+ — 100/100) *63 images, 63 descriptive filenames* - **[PASS]** All images have descriptive filenames ### Hreflang *0 hreflang tags* --- ## Sustainability ### CO2 Per Page Load (F — 15/100) *5.47g CO2 per view* - **[CRITICAL]** 5.47g CO2 per page view — This page transfers 19.3 MB, producing an estimated 5.47g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 1.01g, network 0.95g, end-user device 3.51g. - **[INFO]** At 10,000 monthly views: 657.0 kg CO2/year — With 10,000 page views per month, this page would generate approximately 657.0 kg of CO2 annually — equivalent to charging 82119 smartphones. ### Green Hosting (D — 50/100) *Unknown* - **[INFO]** Hosting provider could not be identified — Without knowing the provider, we cannot determine their energy sourcing. Check with your hosting provider about their renewable energy commitments. - **[INFO]** Green hosting status based on known provider commitments — Green hosting detection uses a curated database of provider renewable energy commitments. This is not a real-time verification. For authoritative checks, visit thegreenwebfoundation.org. ### Repeat Visit Weight (A+ — 100/100) *99% cached* - **[PASS]** 99% reduction on repeat visits — Returning visitors download only 139 KB (vs 19795 KB first visit). 91 of 92 resources are served from browser cache, saving 5.44g CO2 per repeat visit. - **[INFO]** Repeat visit: 0.04g CO2 (first visit: 5.47g) ### Carbon Budget (F — 15/100) *95th percentile* - **[WARNING]** 5.47g CO2 — above the median website (0.60g) — Heavier than an estimated 5% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab. - **[INFO]** Estimated 95th percentile — Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view. ### Transfer Efficiency (A+ — 100/100) *98% efficient* - **[PASS]** Transfer efficiency: 98% — Only 468 KB of potential savings identified. Your page is well-optimized for size. --- --- *Generated by [BeaverCheck](https://beavercheck.com) — https://beavercheck.com/results/276d887a-9307-4140-9e62-4f8f0d5022e0*