Complete Website Health Check Tool

What Is a Website Health Check

A website health check is a comprehensive scan that evaluates your site across multiple dimensions — performance, accessibility, security, and SEO — producing a unified report that highlights issues requiring attention. GoScreenAPI's website health check tool crawls your entire domain, runs diagnostic tests on every discovered page, and delivers an actionable summary that prioritizes fixes by severity and impact. Rather than juggling separate tools for speed testing, link validation, and security scanning, a single health check covers all critical aspects of site quality in one pass.

Regular health checks are essential for maintaining a website that performs well for both visitors and search engines. Performance degradation, broken links, accessibility barriers, and security vulnerabilities accumulate gradually over time — often going unnoticed until they impact traffic or trigger a compliance issue. By running periodic health checks, you catch problems early and maintain a consistently high standard of site quality without waiting for users or search engines to report issues.

Key Dimensions of a Website Health Check

Performance Metrics and Page Speed

The health check evaluates page load performance across your site, measuring response times, time to first byte, and total page weight. Pages that exceed acceptable thresholds are flagged with specific recommendations — oversized images, render-blocking scripts, excessive redirects, or slow server responses. These performance metrics directly influence both user experience and search engine rankings, making them a critical component of any website health check. For continuous performance tracking beyond one-time checks, integrating with uptime monitoring provides ongoing response time data and alerts when performance degrades.

Accessibility Compliance

Accessibility is a core pillar of website health. The health check scans pages for common accessibility issues including missing alt text on images, insufficient color contrast, missing form labels, improper heading hierarchy, and keyboard navigation barriers. These checks align with WCAG guidelines and help ensure your site is usable by visitors with diverse abilities. Addressing accessibility issues not only broadens your audience reach but also reduces legal risk in jurisdictions with digital accessibility requirements.

Security Checks and Vulnerability Detection

The security dimension of the website health check examines your site for common vulnerabilities and misconfigurations. This includes verifying SSL certificate validity, checking for mixed content warnings, detecting exposed sensitive files, and validating security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security. Sites with security gaps risk data breaches, search engine warnings, and loss of visitor trust. The health check surfaces these issues before they become incidents.

SEO and Technical Quality

Beyond performance and security, the health check evaluates technical SEO factors that influence search visibility. This includes checking for missing or duplicate title tags, meta description issues, broken canonical URLs, orphaned pages without internal links, and crawl depth problems. Pages with thin content, missing structured data, or improper robots directives are flagged for review. For a deeper dive into SEO-specific issues, the SEO site audit tool provides granular analysis of on-page optimization factors.

Running a Website Health Check

Getting started with a website health check is straightforward. The process covers your entire site in a single automated workflow:

1. Sign up for a free account on GoScreenAPI Site Crawler — no credit card required.
2. Enter your domain and configure crawl scope (depth, page limits, exclusion patterns).
3. Enable health check mode to activate performance, accessibility, and security diagnostics.
4. Launch the scan and monitor progress as pages are crawled and analyzed.
5. Review the health report with issues categorized by type and prioritized by severity.

The health report groups findings into critical, warning, and informational categories, making it easy to focus on the issues that matter most. Each finding includes a description of the problem, the affected URLs, and guidance on how to resolve it. For teams managing multiple sites, health checks can be run across all domains from a single dashboard.

Ongoing Health Monitoring

A one-time health check provides a valuable snapshot, but websites change constantly — new content is published, plugins are updated, and server configurations evolve. To maintain continuous visibility into site health, combine periodic health checks with visual monitoring for layout change detection and uptime monitoring for availability tracking. This layered approach ensures that performance regressions, broken pages, and visual anomalies are caught promptly rather than discovered during the next manual review.

Who Benefits from Website Health Checks

Website health checks serve teams across multiple disciplines. Development teams use them after deployments to verify that releases have not introduced regressions. Marketing teams run checks before campaigns to ensure landing pages load quickly and display correctly. Compliance officers rely on health reports to document accessibility and security posture. Agency teams include health check results in client deliverables to demonstrate ongoing site quality management. For teams that need to compare health status over time, the crawl comparison tool highlights what changed between consecutive scans — new issues introduced, existing problems resolved, and trends in overall site quality.

Whether you manage a single marketing site or a portfolio of web properties, regular website health checks transform reactive firefighting into proactive quality management. Explore pricing plans to find the right crawl volume and feature set for your team's needs.