Guidelines · WSG 4.4
Setup necessary error pages and redirection links
A request that answers 404 is transfer and connection time spent on nothing, on every single visit, and a redirect chain taxes the first, coldest connection a visitor has. Both are pure waste with no design tradeoff attached.
How to satisfy it
- Fix or remove references to assets that no longer exist, including third-party tags that have gone dark.
- Point links, sitemaps and canonical tags at the final address of a page.
- Redirect in one hop: http to the https www form directly, not through a chain.
- Serve a useful, lightweight error page for the visits that still land on one.
Measured pages failing this guideline
From the 60 most recently measured pages. Each links to its full report.
- openai.com12 requests answered 4xx/5xx on load: transfer and connections spent on nothing, on every single visit.0.778 g CO₂e · 8.53 MB · about 76 kB recoverable
- openai.com18 requests answered 4xx/5xx on load: transfer and connections spent on nothing, on every single visit.2.36 g CO₂e · 25.92 MB · about 55 kB recoverable
- www.renaultgroup.com3 requests answered 4xx/5xx on load: transfer and connections spent on nothing, on every single visit.0.291 g CO₂e · 2.62 MB · about 860 B recoverable
- forum.donanimhaber.com13 requests answered 4xx/5xx on load: transfer and connections spent on nothing, on every single visit.0.510 g CO₂e · 4.48 MB · about 356 B recoverable
- www.luron.ai2 requests answered 4xx/5xx on load: transfer and connections spent on nothing, on every single visit.1.000 g CO₂e · 8.97 MB · about 210 B recoverable
- open.spotify.comThe address that was scanned goes through 2 redirects before the document is served, ending at https://open.spotify.com/. Every hop is a full round trip on a connection that has not warmed up yet.0.551 g CO₂e · 6.05 MB
- jnkzone.cloudflareaccess.comThe address that was scanned goes through 1 redirect before the document is served, ending at https://jnkzone.cloudflareaccess.com/cdn-cgi/access/login/calendar.jnk.zone?kid=42f5b60a61d737b3a94c95696353cf6a9223f48e52b9342d7a658e6d0e6e41f4&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6ImUzOWZmOTBjNjdiMGVmNzQ3NDc4NDAzNTNmZjhkMTBhY2FiODE0ODBlZDk3ZDg2Yjk5YmYxNDkxNzZmZmRmMmEifQ.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.t_3aMm602LVtQdU-vWlKD7h6unBmzyldewT5ldd4u2CeaQqnON90qodFvw6kCc92c3PsNkzln_jsNrWhTCUaFWmzbK6JMKWo78uwHl0q4DB3DWLvr3NeAm54-NKfhf_2RydATUduhrMfJDRps2kbJZPv9nY_cy7eU6tNq65-50dRTY_dxmhdhr1yXvleG2aI1DMjQ58NttStlfqAEX_ZNqCjGVPtJzDKsO6XPf2aBBcPcrx4kc3k9CwTZu3PdK_NdwXKKxINOdM_UBOQyE8VgU_u0ZDMNqi8mami-Es-7TwFO0hjqOrFPSeGsr5RoRKEEv4xlmxy4mi7JSVGxwQZNA&redirect_url=%2F. Every hop is a full round trip on a connection that has not warmed up yet.0.0013 g CO₂e · 11 kB
- www.amazon.inThe address that was scanned goes through 1 redirect before the document is served, ending at https://www.amazon.in/. Every hop is a full round trip on a connection that has not warmed up yet.0.379 g CO₂e · 3.17 MB
- www.build3.orgThe address that was scanned goes through 1 redirect before the document is served, ending at https://www.build3.org/. Every hop is a full round trip on a connection that has not warmed up yet.0.560 g CO₂e · 4.97 MB
- www.statichost.euThe address that was scanned goes through 1 redirect before the document is served, ending at https://www.statichost.eu/. Every hop is a full round trip on a connection that has not warmed up yet.0.013 g CO₂e · 145 kB
- www.google.comThe address that was scanned goes through 2 redirects before the document is served, ending at https://www.google.com/chrome/. Every hop is a full round trip on a connection that has not warmed up yet.0.273 g CO₂e · 2.81 MB
- www.google.comThe address that was scanned goes through 2 redirects before the document is served, ending at https://www.google.com/. Every hop is a full round trip on a connection that has not warmed up yet.0.081 g CO₂e · 875 kB