Generated: 2026-04-29 06:11 UTC

This report tracks how far along each scan type is across all countries. It is regenerated automatically after every scan run.

Overall Coverage

Coverage is measured as pages scanned out of 3,863 pages available in the seed files.

Scan Type Pages Scanned Available Coverage
Combined Reachability 2,884 confirmed reachable 3,863 74.7%
Social Media 3,849 scanned (2,884 reachable) 3,863 99.6%
Technology 3,849 scanned 3,863 99.6%
Lighthouse 398 scanned 3,863 10.3%
Accessibility Statements 3,861 domains 3,863 99.9%
Third-Party JS 3,140 scanned 3,863 81.3%

Combined Reachability counts each URL once if it was confirmed reachable by any scan type.

Coverage Trend (Last 14 Days)

Coverage percentage for each scan type, updated daily. When a scan type is far behind the others it will be automatically prioritised for an extra run.

Date Accessibility Social Media Technology Third-Party JS Lighthouse
2026-04-29 99.9% 99.6% 99.6% 81.3% 10.3%
2026-04-28 0.0% 0.0% 0.0% 0.0% 6.9%
2026-04-27 100.3% 99.6% 99.6% 80.6% 10.9%

Percentages are calculated as pages scanned ÷ total pages available × 100. Lighthouse scans take longer per URL and may lag other scan types; the auto-prioritisation step compensates by triggering extra runs for the most-lagging scan each day.

Top Parent Institutions by Scan Coverage

Aggregated results across all institutions grouped by parent organization (system affiliation, network, etc.):

Parent Institution URLs Scanned Reachable Coverage
Other 25 19 76%
California State University 17 11 65%
University of California 13 12 92%
State University of New York 5 4 80%
Concordia College 5 4 80%
Arkansas State University 4 4 100%
Le Cordon Bleu College of Culinary Arts-Chicago 4 0 0%
Concordia University 4 3 75%
California Community Colleges Chancellor's Office 3 3 100%
Christian Life College 3 2 67%
Huntingdon College, Montgomery, Alabama * Experience the Tradition, Know and Be Known. 3 2 67%
Janus University California 3 3 100%
Jesuit School of Theology of Santa Clara University in Berkeley 3 2 67%
Northeastern University 3 3 100%
Sarah Lawrence College. A Deeper Education. 3 3 100%
Online College Degrees William Howard Taft University 3 3 100%
University of Maryland 3 3 100%
University of Nebraska 3 3 100%
American InterContinental University 2 2 100%
Alaska Pacific University — Discover Active Learning 2 2 100%
Alliant International University; California Graduate Schools, Graduate Degrees; Undergraduate Bachelors Completion Degrees 2 2 100%
Argosy University 2 0 0%
Online University 2 2 100%
Spelman College 2 1 50%
Bakersfield College 2 2 100%
Barry University 2 2 100%
Baylor College of Medicine 2 2 100%
Bellarmine University 2 2 100%
Benedictine University Benedictine University 2 2 100%
Welcome to Brookdale Community College 2 1 50%
California Polytechnic State University 2 2 100%
Carleton College 2 2 100%
Central Christian College of the Bible 2 2 100%
Centre for Commercial Law Studies (CCLS), Queen Mary, University of London 2 0 0%
Chafer Theological Seminary 2 2 100%
Chatham University 2 2 100%
Chester College of New England · Fine Arts · Graphic Design · Photography · Creative Writing · Professional Writing · Interdisciplinary Arts · Chester 2 1 50%
Colombo International Nautical & Engineering College (CINEC) 2 1 50%
Coastal Carolina University 2 2 100%
Colgate is a nationally recognized liberal arts college set on a beautiful 2 2 100%
College of Saint Benedict & Saint John's University 2 2 100%
Colorado State University 2 1 50%
CUNY Borough of Manhattan Community College 2 2 100%
Dallas Theological Seminary (DTS) 2 1 50%
Welcome to Daymar College! 2 0 0%
Delaware College of Art and Design 2 2 100%
North Central University 2 0 0%
Dallas Nursing Institute 2 2 100%
Drexel University 2 1 50%
Eastern Arizona College Homepage 2 2 100%

This grouping organizes individual institution domains under their parent systems or networks (e.g., “University of California” spans UC Berkeley, UCLA, UC San Diego, etc.). Useful for identifying coverage gaps at the system level.

Social Media Scan by Country

Country Scanned Available Reachable Twitter-only Modern Mixed No Social Twitter X Bluesky Mastodon Scan Period
Usa Edu Master 3,749 3,763 2,795 1,232 6 640 917 1,040 296 51 630 Apr 2026
Usa Edu Top100 100 100 89 31 0 36 22 41 19 9 33 Apr 2026

Tier columns (Twitter-only / Modern / Mixed / No Social) classify each page by its overall social media presence. Platform columns (Twitter / X / Bluesky / Mastodon) count pages with at least one link to that platform — a page may appear in more than one platform column.

Hover or focus any non-zero platform count to preview matching pages. Activate the number to keep the preview open and download a CSV for that country and platform from social-media-data.json.

Technology Scan by Country

Country URLs Scanned Last Scan
Usa Edu Master 3,749 2026-04-28
Usa Edu Top100 100 2026-04-28

Lighthouse Scan by Country

Country URLs Perf A11y Best Practices SEO Last Scan
Usa Edu Master 307 87 89 66 89 2026-04-29
Usa Edu Top100 91 88 95 66 93 2026-04-29

Scores are averages across all successfully audited URLs, displayed as 0–100 (multiply source values × 100).

Accessibility Statement Scan by Country

Checks whether each institution’s website links to an accessibility statement. Each row counts distinct domains (one per institution), not individual URLs.

Country Domains Reachable Has Statement In Footer Statement % Scan Period
Usa Edu Master 3,760 2,797 1,071 921 38% Apr 2026
Usa Edu Top100 101 89 57 55 64% Apr 2026

Statement % is the percentage of reachable domains that contain at least one link to an accessibility statement.

Third-Party JavaScript Scan by Country

Country URLs Scanned Last Scan
Usa Edu Master 3,140 2026-04-29

Countries With Social Scan But No URL Validation

These countries have social media scan data but no URL validation data (URL validation may have been skipped because the social scan already confirmed reachability):

USA_EDU_MASTER, USA_EDU_TOP100

Scan Priority Guide

Scans are ordered from highest to lowest priority:

  1. Social Media Scan — runs every 2 hours; downloads and parses full pages, confirming reachability and detecting social links in one pass.
  2. Accessibility Statement Scan — runs every 4 hours; checks whether each page links to an accessibility statement as required by the EU Web Accessibility Directive (Directive 2016/2102).
  3. Technology Scan — runs every 4 hours; detects CMS, framework, and analytics platforms.
  4. Third-Party JavaScript Scan — runs every 6 hours; identifies externally hosted scripts, CDNs, and third-party services.
  5. Lighthouse Scan — runs once per day; measures performance, accessibility (WCAG), best practices, and SEO for each URL. Each URL takes ~20–30 s so coverage builds gradually.
  6. URL Validation — runs every 2 hours in the background; a lightweight redirect/404 check that is automatically skipped for URLs already confirmed reachable by a higher-priority scan within the last 30 days.

Auto-prioritisation: when any scan type is more than 10 percentage points behind the leader, the daily report-generation step automatically dispatches an extra run of that workflow to help close the gap.

Why are Social Media and URL Validation counts different?

The Social Media scanner runs more frequently than URL Validation and therefore covers more URLs over time. Because the Social Media scanner already confirms whether each URL is reachable, the URL Validation job automatically skips any page already confirmed reachable within the last 30 days. As a result the two individual scan counts do not simply add up — each scan covers a different subset of pages.

What URL Validation adds beyond Social Media:

  • Failure tracking — records how many consecutive times each URL has failed; URLs that fail twice are removed from future scans to keep the seed file accurate.
  • Redirect-chain capture — follows and stores the full redirect chain so the seed file can be updated with the final canonical URL.
  • Lightweight fallback — a fast HTTP-only check for URLs that the Social Media scanner has not yet reached, without the overhead of downloading and parsing the full page.

The Combined Reachability row at the top of the coverage table counts each URL once if it was confirmed reachable by either scan, giving the most accurate picture of overall URL health.