A customized 404 Page is more important than most people think.

A customized 404 page isn’t just a “nice touch” — it’s a damage control page. When someone hits a broken link (and they will, especially after URLs change in a redesign), your 404 page is the difference between:

• “Oops, dead end” → user leaves
  vs.
• “Oops, but here are helpful options” → user stays

Why it matters more during a redesign

Redesigns often involve:

• changed page structure
• renamed URLs
• old content is removed
• old backlinks still floating around Google
• people with old bookmarks

So traffic will hit potentialy hit missing pages.

What a good custom 404 page does

A strong 404 page should:

• match the branding/design (so it feels intentional, not broken)
• clearly say the page can’t be found
• include links to key pages (home, services, contact, blog, etc.)
• optionally suggest popular pages or categories

Benefits (real ones, not fluff)

• Improves user retention
• Improves trust (“this site isn’t broken, just moved”)
• Reduces bounce rate
• Helps conversions (people can still find what they need)

How important is it, realistically?

If you’re ranking it against other priorities:

✅ Must-have if:

• The site has a lot of pages
• SEO matters
• The site has old traffic/backlinks
• It’s an e-commerce or lead-gen site

⚠️ Less critical (but still smart) if:

• It’s a tiny brochure site with 5 pages

Bottom line

During a redesign, a custom 404 page is a high payoff.
Even a basic one with branding + top links can save a lot of lost traffic!