Audit Any Website
in Seconds
62 checks across SEO, performance, accessibility, design, aesthetics, and security. Completely free.
google.com
github.com
apple.com
wikipedia.org
cloudflare.com
Start With A Real-World Audit Template
Choose a site type you care about, see what “good” looks like, then compare it against your own page.
Documentation Site
Benchmark navigation depth, search visibility, and readability on a dense docs experience.
developer.mozilla.orgEcommerce Homepage
Pressure-test performance, trust signals, and mobile hierarchy on a commerce-heavy layout.
nike.comNews Publisher
Check how an ad-heavy publisher handles structure, speed, and article discoverability.
nytimes.comSaaS Landing Page
Compare above-the-fold clarity, CTA focus, and technical polish against a strong SaaS homepage.
notion.soAdvertisement
Frequently Asked Questions
What does SiteTester check?
SiteTester runs 62 individual checks across 6 categories: SEO (12 checks), Performance (12), Accessibility (10), Design & Structure (8), Aesthetics (8), and Security (12). Each check produces a score from 0-100, and the overall grade is a weighted average.
Is it free?
Yes, SiteTester is completely free to use. There are no limits on the number of sites you can test. We sustain the tool through non-intrusive advertising.
Can it analyze JavaScript-rendered SPAs?
SiteTester analyzes the initial HTML response from the server. Sites that rely heavily on client-side JavaScript rendering (React, Vue, Angular SPAs) may show lower scores because the content visible to users is not present in the initial HTML. We clearly flag this limitation in results.
How accurate are the scores?
Scores are based on established web development best practices and standards. While no automated tool can replace a full manual audit, SiteTester provides a reliable overview of a site's technical health. Color contrast checks are heuristic-based rather than pixel-level WCAG computation.
Is my data stored?
Scan results are stored only in your browser's local storage for your convenience. We do not store your scan results on any server. Your scan history stays on your device and can be cleared at any time.
What browsers are supported?
SiteTester works in all modern browsers including Chrome, Firefox, Safari, and Edge. We recommend using the latest version for the best experience.
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SEO
✓
Performance
✓
Accessibility
✓
Design
✓
Aesthetics
✓
Security
✓