About 301check.com
What we do
301check.com is a free online tool focused entirely on HTTP redirect analysis. Our goal is to give developers, SEO professionals, and site administrators the clearest, most detailed view of redirect chains available anywhere.
Why we built it
Checking URL redirects is a routine task in web development and SEO work โ but most existing tools fall short in one way or another:
- Incomplete data โ they show the final destination but skip the intermediate hops entirely
- Missing details โ no response times, server IPs, or TLS certificate information
- Poor experience โ outdated interfaces, slow load times, excessive ads
- Paywalled features โ the useful stuff requires an account or a paid plan
We built 301check.com to fix all of that โ a tool that's genuinely useful, completely free, and doesn't get in your way.
What makes us different
๐ฏ Full redirect chain visibility
We don't just show the final URL. Every hop is logged with its status code, response time, server IP, and complete response headers.
โก Fast and accurate
Checks typically complete in 1โ2 seconds, powered by a high-performance server and an optimized detection pipeline.
๐ Completely free
No account, no paywall, no feature tiers. Everything is open. We keep the lights on with unobtrusive advertising.
๐ Privacy-first
We don't store your check data on our servers. Your history lives only in your browser's local storage, and you can clear it any time.
How it's built
301check.com is built with straightforward, dependency-free web technology:
- Frontend โ vanilla JavaScript and CSS, no frameworks, fast load times
- Backend โ PHP with cURL, full HTTP protocol support
- Design โ responsive layout with dark and light theme support
- i18n โ full Chinese and English support with proper hreflang tagging
The team
301check.com is an independent developer project maintained by a small team that cares about web tooling. We believe good tools should be free, open, and easy to use.
If you have feedback, a bug report, or a collaboration idea, we'd love to hear from you.
Get in touch
๐ง Email: contact@301check.com
๐ฆ Twitter: @301check
๐ฌ Feedback: Email is the best way to reach us with suggestions or issues.
Support us
If 301check.com has saved you time, here's how you can help:
- Share it with colleagues and friends
- Mention it on social media or in your blog
- Send us feedback โ we read everything
- Keep an eye out for new features; we're always improving