Marketing fundamentals are the technical building blocks that determine whether your website can be found, trusted, and measured. They include SEO elements like title tags and meta descriptions that help search engines understand your content, security configurations like SSL certificates and HSTS headers that protect your visitors, email authentication records (SPF, DKIM, DMARC) that prevent your domain from being spoofed, and analytics tracking that tells you what's actually happening on your site.
Most websites have gaps in at least a few of these areas. A missing canonical tag can cause duplicate content issues. A missing DMARC record can let anyone send emails pretending to be your domain. A slow page load can cost you rankings and conversions. These aren't edge cases — they're the basics that every website needs to get right, and they're easy to overlook if you're not checking for them regularly.
Type a domain name — no account needed. WEBCHKR works with any publicly accessible website regardless of platform or industry.
WEBCHKR checks SEO elements, security headers, DNS email authentication, Core Web Vitals, analytics tracking, structured data, and accessibility indicators — all at once.
Each check shows what was found, what needs attention, and why it matters. Results are educational — designed to help you understand what to fix and why, not just show a pass/fail score.
Search engines use technical signals — page titles, meta descriptions, structured data, page speed, HTTPS — to decide what to show in results. Missing or misconfigured elements mean your pages may not rank as well as they could, or may not appear correctly in search results. A page without a meta description lets Google generate its own snippet, which may not represent your content the way you'd choose.
SPF, DKIM, and DMARC records tell email providers that messages from your domain are legitimate. Without them, your emails are more likely to land in spam folders — or worse, anyone can send emails that appear to come from your domain. These DNS records are straightforward to set up but frequently overlooked, especially by smaller organizations.
Core Web Vitals — Largest Contentful Paint, Interaction to Next Paint, and Cumulative Layout Shift — are Google's metrics for page experience. They measure how fast your page loads, how quickly it responds to interaction, and how stable the layout is while loading. Poor scores here directly impact both rankings and conversion rates.
HTTPS is table stakes, but security headers like Content-Security-Policy, HSTS, and X-Frame-Options add layers of protection against common attacks. Privacy indicators — privacy policies, cookie consent banners, GDPR mentions — signal to visitors that you take their data seriously. Missing any of these can erode trust before a visitor even reads your content.
WEBCHKR runs 25 automated checks across seven categories: basics (HTTP status, SSL, viewport), SEO (title, meta description, H1, canonical, Open Graph, robots.txt, sitemap, llms.txt, structured data), analytics (GA4, GTM, advertising pixels, Google Search Console verification), email authentication (SPF, DKIM, DMARC), performance (Core Web Vitals, performance score, loading speed), security (HTTPS, security headers, privacy compliance), and accessibility indicators (language attribute, alt text, semantic landmarks).
Yes. WEBCHKR is completely free with no account required. Enter a domain and get results in about 30 seconds.
Most SEO tools focus on keyword rankings, backlinks, or content optimization. WEBCHKR focuses specifically on technical marketing fundamentals — the infrastructure-level checks that every website needs regardless of its content strategy. Think of it as a pre-flight checklist: are the basics in place before you invest in content and campaigns?
Some websites use bot protection services (like Cloudflare, Akamai, or Imperva) that serve a challenge page instead of real content. When this happens, WEBCHKR detects the challenge and shows a warning banner. The security and DNS checks may still work correctly since they don't depend on page content, but on-page SEO checks will reflect the challenge page rather than your actual site.
DKIM (DomainKeys Identified Mail) is a DNS record that lets email providers verify that messages claiming to be from your domain were actually sent by authorized servers. Without it, your emails are more likely to be flagged as spam. WEBCHKR scans over 50 common DKIM selectors used by services like Google Workspace, Microsoft 365, SendGrid, Mailchimp, and HubSpot to identify which email services your domain has configured.
llms.txt is a new standard (similar to robots.txt) that helps AI language models understand your website. As AI-powered search and assistants become more common, having an llms.txt file helps ensure AI systems can accurately represent your business, products, and services. It's early days, but forward-thinking sites are already adopting it.