# HTTP Tiger

> Free website and API uptime monitoring plus a full suite of HTTP diagnostic tools — bulk HTTP status checking, DNS propagation, SSL, headers, redirects and more. No signup required.

HTTP Tiger (httptiger.com) is a free, browser-based toolkit for developers, DevOps engineers, and IT professionals who need to check whether websites and APIs are up, diagnose HTTP errors, and monitor uptime. Check up to 100 URLs at once, verify DNS propagation worldwide, inspect HTTP response headers and status codes, validate SSL/TLS certificates, follow redirect chains, and find broken links. Most tools run instantly in the browser with no account needed.

## Core Tools
- [Bulk HTTP Status Checker (home)](https://httptiger.com/): Check up to 100 URLs at once for HTTP status codes, response times, and redirects. Export to CSV.
- [Is It Down?](https://httptiger.com/is-it-down.html): Check whether a website is down for everyone or just you, right now.
- [Bulk URL Checker](https://httptiger.com/bulk-checker.html): Test 100+ URLs simultaneously for status codes and availability.
- [DNS Checker](https://httptiger.com/dns-checker.html): Check DNS propagation and DNS records from locations worldwide.
- [SSL Certificate Checker](https://httptiger.com/ssl-checker.html): Validate SSL/TLS certificates, expiry dates, and chain configuration.
- [HTTP Header Checker](https://httptiger.com/header-checker.html): Inspect HTTP response headers, security headers, and caching directives.
- [Redirect Checker](https://httptiger.com/redirect-checker.html): Follow and analyze full URL redirect chains (301, 302, and more).
- [Broken Link Checker](https://httptiger.com/broken-link-checker.html): Crawl a page and find dead links and 404 errors.
- [IP Lookup](https://httptiger.com/ip-lookup.html): Find your IP address plus geolocation and network details.
- [WHOIS Lookup](https://httptiger.com/whois-lookup.html): Look up domain registration and ownership information.
- [Blacklist Checker](https://httptiger.com/blacklist-checker.html): Check whether an IP or domain is on email/spam blacklists.
- [Speed Test](https://httptiger.com/speed-test.html): Free internet speed test with no ads.
- [HTTP Status Codes Reference](https://httptiger.com/http-status-codes.html): Complete list of 1xx-5xx HTTP status codes with meanings.

## Guides
- [DNS Propagation Guide](https://httptiger.com/dns-checker-guide.html): Why DNS changes take time and how to check propagation.
- [SSL Certificate Guide](https://httptiger.com/ssl-certificate-checker-guide.html): Common SSL errors, expiry, and how to fix them.
- [HTTP Headers Guide](https://httptiger.com/http-header-checker-guide.html): Security and caching headers explained.
- [IP Address Lookup Guide](https://httptiger.com/ip-lookup-guide.html): Geolocation and ASN basics.
- [Is a Website Down? Guide](https://httptiger.com/is-it-down-checker-guide.html): How to tell for sure whether a site is down.
- [HTTP Redirects Guide](https://httptiger.com/redirect-checker-guide.html): 301 vs 302 redirects and their SEO impact.
- [Broken Link Checker Guide](https://httptiger.com/broken-link-checker-guide.html): Finding and fixing 404s.
- [Blacklist Checker Guide](https://httptiger.com/blacklist-checker-guide.html): How to delist and fix email deliverability.

## Company
- [Pricing](https://httptiger.com/pricing.html): Plans for monitoring and higher-volume checking.
- [Documentation](https://httptiger.com/docs.html): API and tool documentation.
- [FAQ](https://httptiger.com/faq.html): Frequently asked questions.
- [Dev Blog](https://httptiger.com/blog.html): New tools, updates, and infrastructure notes.
- [Support](https://httptiger.com/support/): Get help.
- [Privacy Policy](https://httptiger.com/privacy.html)
- [Terms of Service](https://httptiger.com/terms.html)

## Related Tools (Tiger Network / SnapIT Zoo Suite)
- [HTTP Tiger Reference](https://httptiger.org/): Detailed guide to every HTTP status code with fixes.
- [Status Tiger](https://statustiger.com/): Hosted status pages and 24/7 uptime monitoring.
- [SnapIT Software](https://snapitsoftware.com/): The full SnapIT product portfolio.