URL Checking at Scale

Most URL checkers break down at scale. They run from a single IP, get rate-limited by target servers, and produce unreliable results. When you need to check thousands of URLs, you need infrastructure designed for mass validation — not a tool built for checking 50 links.

🌐 Proxy Rotation

Requests are distributed across multiple IP addresses to avoid triggering rate limits or IP bans on target servers. No more 429 errors ruining your results.

⚡ Parallel Processing

Our cloud infrastructure checks URLs in parallel across distributed servers. 75,000 URLs in minutes, not hours.

🎯 Zero False Positives

Playwright-based deep checking handles JavaScript-rendered pages. Smart retry logic distinguishes between genuinely broken URLs and temporary server issues.

Why Mass URL Checking Is Different

At small scale, URL checking is straightforward — send a request, check the status code. At mass scale, everything changes:

Rate Limits: Checking 1,000 URLs on the same domain will trigger 429 errors within seconds. Our checker limits to 20 requests per minute per domain.
IP Reputation: Mass requests from a single IP look like a bot attack. Proxy rotation makes requests appear natural.
False Negatives: Some sites use JavaScript to render content. A simple HTTP request sees an empty page and reports it as broken. Playwright catches these.
Timeouts: At scale, some servers respond slowly. Aggressive timeouts mark slow pages as broken. We use adaptive timeouts based on server response patterns.

💡 Scale matters: Checking 75,000 URLs at 20 requests per minute per domain with a single IP would take over 40 hours. Our distributed infrastructure with proxy rotation completes the same job in minutes.

Who Needs Mass URL Checking?

Enterprise SEO Teams: Large websites with tens of thousands of pages need regular link health checks
Digital Agencies: Managing dozens of client sites means checking URLs at scale across different domains
E-commerce Platforms: Product catalogs with thousands of pages need automated broken link detection
Knowledge Base Maintainers: Internal documentation with external references needs periodic mass validation
Site Migration Teams: Verify that every old URL redirects to the correct new page after a migration

Mass Checking vs. Desktop Tools

Desktop tools like Screaming Frog are powerful, but they hit a wall at scale:

Single IP: Desktop tools send all requests from your machine's IP — easy to block
RAM Limits: Large crawls consume gigabytes of memory and crash
Your Bandwidth: Mass checking ties up your internet connection for hours
Must Stay Running: Close your laptop and the job stops

Our cloud-based mass checker runs on distributed infrastructure. Upload your list, close your browser, and we'll email you when it's done.

Mass URL Checker — Validate Thousands of URLs in Minutes