Catch broken pages before your users do.
Paste a URL and get a full website health report in under a minute — broken pages, failed assets, server errors, and blank screens.
Scan summary
example.com
PASS /docs/getting-started loaded in 241ms
FAIL /checkout returned 500
Find hidden route failures
Crawls internal links so stale pages and deep navigation paths are not missed.
Separate signal from noise
Groups HTTP failures, blank pages, and broken assets into a readable report.
Share a clean handoff
Export results as a focused PDF your team can triage without extra setup.
Three steps to a full website health report
No account, no install, no waiting — just paste and scan.
Enter your URL
Paste any public website URL. The scanner normalizes and validates it automatically.
We crawl your site
The crawler discovers up to 60 internal pages from your sitemap and internal links in parallel.
Get instant results
See which pages work, which fail, and exactly why — exported as a PDF if you need it.
What is IsItCrashing?
IsItCrashing is a free website crash checker that lets users enter a URL and scan for broken pages, failed requests, and website health issues. Use it as a fast first-pass website crash and broken page scanner before deeper QA or monitoring.
What the tool checks
- Discovered internal pages from sitemaps and links.
- HTTP 404, 500, timeout, redirect, and network failures.
- Blank pages where visible content does not load.
- Broken critical scripts, stylesheets, preload files, and assets.
- Important JavaScript crashes on browser-checked pages when the browser scanner is configured.
Who should use it
- Developers checking deployments and route changes.
- QA teams running pre-release website checks.
- SEO teams finding failed pages before crawl waste grows.
- Agencies preparing client handoffs.
- Website owners checking public pages after content edits.
Why it is different from a basic uptime checker
A basic is-my-site-down checker usually tests one URL. IsItCrashing discovers internal pages and reports which URLs failed, which makes it more useful when only part of a website is broken.
vs uptime checker
Tests more than one homepage URL and shows failed internal pages.
vs broken link checker
Checks page loading, blank content, and critical asset failures, not only href targets.
vs manual QA
Broad and fast for first-pass failure detection before detailed workflow testing.
vs full monitoring
Best for ad hoc scans now; monitoring is better for long-term alerting.
Benefits
Catch failed pages quickly, reduce release risk, give teams a focused fix list, and validate important public URLs before users or search engines encounter problems.
Use cases
Run scans after deployments, migrations, CMS changes, redirect updates, campaign launches, plugin updates, and client handoffs.
Trust-focused scope
The scanner is free, fast, and useful for first-pass checks. It does not promise to find every bug or replace logs, monitoring, accessibility testing, or manual QA.
Common questions
Is IsItCrashing free?
Yes. Enter a public URL and run a free website health scan without installing an agent or creating an account.
How long does a scan take?
Most scans complete in under a minute. Pages are checked concurrently, not one by one, so a 60-page site typically finishes in 20–45 seconds.
How many pages does it scan?
It discovers up to 60 internal pages per scan from your sitemap and internal links. Very large sites may need a dedicated crawl tool for full coverage.
How is it different from Down Detector?
Down Detector tracks crowd-sourced outage reports for major services like Netflix. IsItCrashing scans your own website's pages automatically — different tool, different question entirely.
Can I check my website after a deployment?
Yes — that is one of the most common uses. Paste your production URL after deploying and get a full report of working and failed pages before users encounter problems.
What is a blank page error?
A blank page error is when a URL returns HTTP 200 OK but renders no visible content. This usually means a JavaScript hydration failure or a silent server-side rendering exception.
Can it scan every page?
It discovers pages from sitemaps and internal links up to the scan limit. Very large, private, or unlinked pages may need deeper crawling tools.
Does it detect JavaScript errors?
It can detect important JavaScript crashes on browser-checked pages when browser scanning is configured. It is not a replacement for runtime error monitoring.
Can I export or share the results?
Yes. Click Export PDF once a scan completes to open a print-optimized report you can save as PDF and share with your team or attach to a client handoff.
Does it check broken links?
It checks whether your own internal pages load correctly. It detects internal 404s and server errors — the most impactful class of broken page — but does not validate external link targets.
Should I still use monitoring?
Yes. Use IsItCrashing for fast proactive scans around deployments. Use a monitoring service for ongoing production alerting. The two complement each other.
Can I scan a private staging site?
Publicly reachable staging sites protected by HTTP Basic Auth can be scanned by enabling Basic Auth below the URL field. VPN-only sites, login forms, SSO, and IP allowlists are not supported.
More free website checking tools
Website Crash Checker
Scan for crashes, server errors, and route-level failures.
Broken Page Checker
Find 404 errors and failed pages across your internal URLs.
Website Health Checker
Get a full health score and sorted list of failing pages.
Post-Deployment Check
Verify your site is working correctly after every deploy.
Ready to find out what’s broken?
Free, instant, no account needed. Just paste a URL and get your report.