SEO Spider
Free Website Crawler
& Auditor
The most powerful free SEO spider on the planet. Crawl unlimited URLs, detect technical issues instantly, and export audit-ready reports, from a blazing-fast desktop app. No limits. No excuses.
| URL Path | Status | Title | Health |
|---|---|---|---|
| /products/enterprise | 200 | Enterprise Features | |
| /blog/seo-2025 | 200 | SEO in 2025 | |
| /legacy-pricing | 301 | Redirected | |
| /about-team | 404 | No title found | |
| /contact-us | 200 | Contact Sales |
Every technical signal.
One powerful dashboard.
Unlimited URL Crawler
Crawl any website, 100 pages or 10 million. No URL caps, no paywalls, no daily limits. Multi-threaded engine with configurable concurrency, depth, and speed.
Complete SEO Audit
Instantly surface missing titles, duplicate descriptions, thin content, canonical errors, and 60+ on-page violations flagged per URL in real time.
Link and Redirect Analysis
Map every 301, 302, 404, 410, and redirect chain. Visualize loops, identify broken links, and flag soft 404s before Google demotes your rankings.
Internal Link Visualizer
Render your entire internal link architecture as an interactive node graph. Spot orphaned pages, PageRank leakage, and over-linked hubs locally.
Schema Validator
Extract and validate JSON-LD, Microdata, and RDFa on every page. Auto-flag invalid schema and Google Rich Results eligibility gaps.
Core Web Vitals
Pull live CrUX field data and Lighthouse lab scores alongside crawl data. Correlate LCP, CLS, and INP bottlenecks with crawl issues seamlessly.
Engineered for specialists.
Smarter than the frog.
We analyzed every bottleneck in legacy crawlers to build a multi-threaded engine that outperforms paid alternatives in every metric.
| Architecture | Legacy | SEO Spider |
|---|---|---|
Free URL limit | 500 URLs only | Unlimited, always free |
Annual pricing | £249 / year required | Free forever |
Crawl speed | Moderate throughput | 14× faster multi-thread |
Link graph visualiser | Basic / limited | Interactive and Exportable |
Core Web Vitals (CrUX) | Paid plan only | Built in, free |
Real-time issue dashboard | Not available | Live as crawl progresses |
Custom extraction (regex and XPath) | Paid plan only | Unlimited extractions |
Multi-site batch crawl | Not available | Up to 100 sites at once |
Loved by Elite SEOs.
Join 50,000+ professionals who made the switch.
"Screaming Frog hit my 500-URL wall on the very first client site I crawled. SEO Spider crawled 48,000 pages in under 2 minutes. I cancelled my SF subscription the same day."
"The live issue dashboard alone is worth switching tools. I found a sitewide canonical misconfiguration 30 seconds into the crawl, an issue that had been quietly killing rankings for months."
"Finally a tool built for how SEOs actually work. The schema validator and GSC integration saved my team 4 hours per client audit. And it's free. It's genuinely insane."
"The built-in CrUX and Lighthouse integration allows me to correlate crawl issues directly with Web Vitals data. Having it all in one clean desktop app is a massive game changer."
"My agency manages over 40 large enterprise sites. Being able to crawl multiple sites simultaneously without purchasing extra licenses has literally saved us thousands of dollars."
"No clunky Java interface. It perfectly integrates with our automated pipelines via the CLI, letting us run scheduled audits in the background directly from our own servers."
Stop paying for
what should be free.
Get the full technical power of premium desktop SEO crawlers without the absurd pricing. Download instantly.