What it means
Servers and proxies limit URL length (often to a few KB). If a URL exceeds the limit, the server returns a 414. It's often a symptom of another bug, such as a loop that appends a parameter on every redirect.
Most common causes
- A redirect loop that keeps repeating parameters (e.g. ?redirect=…?redirect=…).
- A form with lots of data sent via GET instead of POST.
- Very long tracking parameters or encoded data in the URL.
What you can do as a visitor
- Open the site's homepage and find the content again, without the long URL.
- Clear the site's cookies if redirects keep sending you round in circles.
What the site owner or developer should do
- Find the redirect loop that keeps lengthening the URL.
- Send larger payloads via POST in the request body.
- If needed, increase large_client_header_buffers (Nginx) or LimitRequestLine (Apache).
Impact on SEO and Google
Googlebot rarely hits a 414; when it does, it usually points to a loop or broken parameters in internal links.
Frequently asked questions
How long can a URL be?
There's no single limit; most servers allow a few thousand characters. To be safe, stay under about 2,000.
Does a 414 mean a server error?
No. The request is too long, so the source of the URL needs fixing.