2026-08-14

404 errors are burning your ad budget

A 404 error is a page that no longer exists.

Your ad platform does not care. You pay for the click either way.

Réka runs marketing for a garden supplier. Her team rebuilt the website in April. Traffic held up. Sales fell.

Six product URLs had changed. Three of them were in live ads. One was in a newsletter that goes out every Tuesday.

Every click cost her money and delivered nothing. This ran for five weeks.

The maths is brutal

Say you pay 1 euro per click. Say 400 people a month land on a dead page.

That is 400 euros gone. No sale, no signup, no email address.

But the bill is bigger than that. You also lose:

• The customer. Almost nobody hunts for the right page. They go back and click a competitor.
• The trust. A broken link makes a serious company look careless.
• The link value. Another site linked to you. That link now points at nothing.
• The clean data. Your reports fill up with visits that produced nothing. Your best channel starts to look weak.

A five minute check every week catches this in time.

"Cool URIs don't change."

Tim Berners-Lee, Cool URIs don't change, W3C, 1998

He wrote that in 1998. The web still breaks the rule every day. Every dead address costs you a click you already paid for.

Where dead links come from

Nobody creates a 404 on purpose. They arrive through five ordinary routes.

• A redesign. New pages, new addresses, no redirects. This is the biggest cause by far.
• A deleted product. The item sold out and someone removed the page. The ad is still running.
• A typo in a campaign link. One wrong character in one newsletter goes to twelve thousand people.
• An old PDF or price list. It has been downloaded for years and it still links to the old shop.
• Somebody else's link. A blog wrote about you in 2023 and linked to a page you have since renamed.

The last one is free traffic you are throwing away. Someone recommended you and you sent their reader to an error page.

How to find yours this week

StatJolt marks 404 pages automatically. It spots the not found page and flags it in red.

You do not configure anything. You just look at the list.

Then you check where those visitors came from. That is the part that matters.

• Did they come from an ad? Fix it today. You are paying by the click.
• Did they come from an email? Fix it before the next send.
• Did they come from another website? Redirect the page and keep the link value.
• Did they come from your own site? A menu or a button is broken.

Still with me? Good, because the fix order saves you the most money.

Fix in this order

Do not fix them alphabetically. Fix them by cost.

1. Paid traffic first. Every hour costs real money.
2. Email links second. These are your warmest readers and the damage repeats with every send.
3. Links from other sites third. These are permanent and free.
4. Your own internal links last. Annoying but cheap.

For each one, send the visitor to the closest matching live page.

Do not send everything to the homepage. That feels tidy and it converts badly. Someone looking for a specific rake does not want your homepage. They want rakes.

If the product is truly gone, send them to the category. Then say so on the page.

Stop them coming back

Three habits prevent most of this.

• Check your 404 list every month. It takes four minutes.
• Never delete a page without a redirect. Removing is one step. Redirecting is the second step.
• Test your campaign links before you send. Click every single one. Yes, all of them.

That last habit also keeps your campaign reporting clean. We cover the rest of that in campaign tracking without UTM chaos.

Where StatJolt fits in

StatJolt shows dead pages next to your normal traffic, marked in red. You see them while you are looking at everything else.

You also see the source of each visit. That is how you tell paid clicks from free ones and that decides your fix order.

Bad pages are one way your numbers mislead you. Fake visitors are another. We wrote about that too: bot traffic is inflating your numbers.

If you only read one box

A dead landing page still costs you the click. After a redesign it can run for weeks unnoticed. Find your 404s, then check where each visitor came from. Fix the paid traffic first and redirect people to the closest live page, never to your homepage.

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