Website Auditor
Fast, compact, and detailed SEO & Performance reports.
Awaiting URL Input
Introduction
A website is more than its visible design — beneath every page lies a stack of performance characteristics, security headers, SEO metadata, accessibility attributes, and technology fingerprints that determine whether it ranks well, loads fast, and complies with best practices. Manually auditing all of these dimensions requires running a dozen different tools and cross-referencing their results. A web analyzer consolidates that audit into a single scan that checks performance, security, SEO, and tech stack in one pass, giving you an actionable prioritized report.
What Is Web Analyzer?
Web Analyzer fetches a URL you provide and runs a comprehensive audit across four dimensions: performance, security, SEO, and technology detection. On the performance side, it measures Time to First Byte, total page weight, the number and size of JavaScript and CSS assets, image format efficiency, and render-blocking resource counts. For security, it checks for the presence and correctness of HTTP headers like Content-Security-Policy, Strict-Transport-Security, X-Content-Type-Options, and X-Frame-Options, flagging any that are missing or misconfigured.
The SEO audit examines meta tags (title, description, canonical), Open Graph and Twitter Card markup, heading hierarchy, image alt text coverage, structured data validity, and robots.txt accessibility. Technology detection identifies the server software, CMS platform, JavaScript frameworks, analytics tools, and CDN provider by analyzing response headers, HTML source patterns, and JavaScript global variables. This is the information competitive intelligence teams pay for — except you get it instantly for any public URL without signing up for anything.
The analyzer only scans publicly accessible URLs using the same HTTP requests a browser would make. It does not attempt to bypass authentication, exploit vulnerabilities, or access private resources. The scan results are generated for your session and are not stored in a permanent database tied to your identity or account.
Web Analyzer Examples
| Input | Output |
|---|---|
| https://www.example-store.com | Performance: TTFB 380ms, page weight 2.4MB (1.8MB images, 420KB JS). Security: missing Content-Security-Policy and X-Frame-Options headers. SEO: 3 images missing alt text, no canonical tag. Tech: Shopify, Cloudflare, Google Analytics 4 |
| https://docs.myapi.dev | Performance: TTFB 120ms, page weight 680KB, no render-blocking resources. Security: HSTS max-age=31536000, CSP present, X-Content-Type-Options nosniff — all passing. SEO: Open Graph tags present, structured data (TechArticle) valid. Tech: Next.js, Vercel, Algolia search, Intercom |
| https://blog.startup.io/post/launch | Performance: TTFB 920ms (slow), 14 JavaScript bundles totaling 1.1MB, 6 render-blocking stylesheets. Security: no HTTPS redirect, missing HSTS. SEO: meta description too long (185 chars), h1 missing, Twitter card image 404. Tech: WordPress, Apache, jQuery, Jetpack |
Key Features of Web Analyzer
- Performance audit measuring TTFB, total page weight, asset counts, and render-blocking resources
- Security header analysis checking for CSP, HSTS, X-Frame-Options, X-Content-Type-Options, and Referrer-Policy
- SEO scan covering meta tags, Open Graph markup, heading hierarchy, alt text coverage, and structured data validation
- Technology fingerprinting that identifies server software, CMS, JS frameworks, analytics, and CDN from response headers and source patterns
- Image format audit detecting unoptimized PNGs that could be WebP, and images lacking width/height attributes causing layout shifts
- Priority-ranked recommendations so you fix the highest-impact issues first rather than working through an unordered list
- Exportable report in PDF or JSON format for sharing with stakeholders or importing into project management tools
How It Works
Enter the Public URL to Audit
Paste the full URL of any publicly accessible web page you want to evaluate. The analyzer fetches the page and runs a comprehensive audit covering performance metrics, accessibility compliance, SEO fundamentals, and best practice adherence — all from a single URL input.
Multi-Category Scan
The tool evaluates your page across four categories: performance (load speed, resource sizes, render-blocking assets), accessibility (contrast ratios, ARIA labels, semantic HTML), SEO (meta tags, heading hierarchy, crawlability), and best practices (HTTPS, security headers, deprecated APIs). Each category receives its own score.
Prioritized Fix List
Results are sorted by impact so you know exactly which changes will move the needle most. Critical issues like uncompressed images or missing alt text appear first, followed by moderate improvements. Each issue includes a specific recommendation and an estimated effort level.
Who Uses This
Web Developers
running pre-launch audits on new sites and feature deployments to catch performance bottlenecks, accessibility gaps, and SEO mistakes before they reach production users
Agency Project Managers
generating client-facing quality reports that quantify site health with scores instead of subjective opinions, making it easy to prioritize development work and justify technical recommendations
Shopify Store Owners
identifying why their product pages load slowly or rank poorly by running the analyzer and handing the fix list to their developer or implementing the simpler changes themselves