Website crawler built for modern sites
SpiderDog crawls websites with Playwright, rendering JavaScript just like Googlebot. Discover broken links, missing metadata, indexability problems, and performance issues across every page.
Why SpiderDog crawls better
JavaScript rendering
Execute client-side code in a real Chromium browser so you audit exactly what search engines see.
Mobile & desktop viewports
Crawl with both device profiles to catch mobile-only issues like viewport misconfiguration and tap target problems.
Robots.txt & sitemap aware
Respect robots.txt directives and validate sitemap consistency automatically.
Scheduled crawling
Set daily, weekly, or monthly crawls and track health score trends over time.
Why a real browser crawler matters
Many legacy crawlers fetch raw HTML and stop there. Modern websites built with React, Vue, Angular, or Next.js load critical content after the initial page request. If your crawler does not execute JavaScript, it will miss client-side rendered text, lazy-loaded images, hydration errors, and single-page-application navigation.
SpiderDog uses Playwright to drive a Chromium browser through every page. It waits for hydration, captures the fully rendered DOM, and records the same performance signals a real user experiences. That means you catch the issues that static crawlers cannot see, without manually auditing pages one by one.
Built for every kind of website
E-commerce
Find product pages with missing descriptions, duplicate variant titles, broken faceted navigation, and slow checkout flows.
SaaS
Audit docs, landing pages, pricing pages, and blogs for indexability and internal linking issues.
Agencies
Run crawls for every client, compare audits over time, and export white-label PDF reports.
What happens after the crawl
Once the crawler finishes, SpiderDog aggregates every issue into a health score and breaks the findings down by category: indexability, content quality, links, images, performance, structured data, security, and mobile usability. Critical issues are surfaced first, so you know where to focus your time.
Every issue includes a technical explanation for developers and a business-friendly summary for stakeholders. You can export the full report as a PDF, CSV, or JSON file, or share a permanent link with team members who do not have a SpiderDog account.
What the crawler discovers
Every crawl extracts links, images, headings, structured data, canonical tags, robots directives, Open Graph tags, security headers, and Core Web Vitals. The result is a complete picture of your site's technical health, not just a list of URLs.
Start crawling today
Run your first crawl for free and see what a real browser-based website crawler finds.
Create free account