Troubleshooting, without the noise
Calm, practical help for the errors that eat your day.
404Buddy is an ad-supported utility hub for website, browser, server, and developer-facing errors. Start with a pasted message, explore HTTP status codes, or run lightweight URL tools—all in one place.
Preview: how we fix errors
Error: ERR_CONNECTION_RESET
- What it meansThe TCP connection closed before a full HTTP response—often a proxy, firewall, or flaky network path.
- Common causesIdle timeouts, TLS middleboxes, CDN origin errors, or aggressive antivirus filtering.
- Step-by-step fixRetry from another network, compare curl vs browser, then check proxy and server logs for RST or upstream resets.
Try: ERR_CONNECTION_RESET, 502 Bad Gateway, npm install errors…
Full stack traces and logs are fine — one click sends everything.
No signup. Instant results. Cached for speed.
Works for HTTP, DNS, browser, and runtime errors.
Popular starting points
How it works
Paste your error
Drop in the full line from DevTools, a terminal, or a server log—no account needed.
We analyze and match
We normalize the text, look up existing fix pages, and only generate when we need to.
Get clear steps
Each fix explains meaning, likely causes, and what to try next—shareable at a stable URL.
Tools at a glance
No extensions. No installs. Just results—run quick diagnostics without leaving your browser.
Fix an error
Paste a browser or server message. We match existing guides or generate a structured fix page—cached for next time.
URL status checker
See the final HTTP status and how long the response took—great for quick health checks.
Redirect checker
Follow redirect chains hop by hop so you can spot loops and misconfigured hosts.
Header checker
Inspect response headers after redirects—useful for caching, security, and CDN behavior.
Broken link checker
Scan anchors on a page and spot unhealthy status codes.
Canonical checker
See if canonical tags line up with the URL users actually get.
Robots.txt checker
Pull and read robots.txt for any site origin.
Sitemap checker
Count URLs in an XML sitemap and preview a sample list.
Feedback
We read every note—especially what felt confusing or missing.