What counts as a lost backlink
A backlink is lost when a page that used to link to your site no longer passes that link. It sounds simple, but there are several different situations behind it, and each needs a different response.
- The link was removed. The linking page still exists, but the link to you is gone.
- The linking page was deleted or now returns an error. The link disappeared together with the page.
- The linking page redirects elsewhere. The content moved, and the new page may or may not include your link.
- The link changed attributes. A followed link became nofollow, sponsored or user generated, which changes how search engines treat it.
- Your target page broke. The link still exists, but it points to a URL on your site that now returns a 404 error.
- The linking page is no longer indexed. The link exists, but search engines no longer see the page that contains it.
The last two cases are easy to miss, and one of them is entirely in your control.
Why some lost links matter and most do not
Links from strong, relevant pages help search engines understand that your content is trusted. Losing one of those links to a page that already ranks well can weaken that page, especially in competitive results. Losing a link from a low quality directory or a scraped copy of your article usually changes nothing.
That is why counting lost links is less useful than reviewing them. A month with many lost links can be harmless, while a month with a single lost link from an important industry publication can deserve immediate action. Look at the quality of the linking domain, the relevance of the page and which of your pages received the link.
How to find lost backlinks
You cannot react to lost links you do not know about. Manual checks work for a handful of important links, but they do not scale. A backlink monitoring tool rechecks your links and records the date each one disappeared and the reason it was marked as lost.
When you review the list, sort it by the strength of the linking domain first, then by the importance of your target page. This puts the few links that matter at the top. A quick backlink checker lookup on your own domain also shows the current referring domains, so you can confirm whether the site still links to you from a different page.
Set a review rhythm. Weekly works for sites that rely heavily on links, monthly is enough for most others. Alerts for lost links from your strongest referring domains catch the important cases between reviews.
Decide which links to recover
Not every lost link deserves outreach. Use a short checklist to decide quickly.
| Question | If yes | If no |
|---|---|---|
| Is the linking domain strong and relevant? | Continue the review | Ignore, the impact is minimal |
| Did the link point to an important page? | High priority | Medium or low priority |
| Is the cause on your side, such as a broken target URL? | Fix it yourself first | Consider outreach |
| Does the linking page still exist? | Outreach has a chance | Look for the new location of the content |
| Was the link editorial rather than paid or swapped? | Worth recovering | Usually not worth pursuing |
Spend your time on the links that pass the first two questions. Everything else can wait or be ignored.
Fix problems on your own site first
The fastest recoveries are the ones that need no outreach at all. If a lost link points to a URL that now returns an error on your site, restore the page or add a permanent redirect to the closest matching page. The link starts passing value again as soon as search engines recrawl it.
This happens most often after a redesign, a migration or a content cleanup. Old URLs get removed without redirects, and every link that pointed to them loses its effect. Run an SEO audit after any structural change and check the list of broken pages that still receive external links. Redirect those first.
Also check redirect chains. A link that passes through several redirects before reaching the final page works less reliably than a link to a page with a single redirect or none.
Reach out when the link was removed
When the linking page still exists but your link is gone, a short and polite message to the site owner can bring it back. The best outreach explains why the link helps their readers, not why it helps you.
- Find the right person. The author of the article or the editor of the section is more likely to respond than a general inbox.
- Mention the exact page and the link that used to be there.
- Offer a reason to restore it. Perhaps your resource was updated, or the link they replaced it with is now broken or outdated.
- Keep the message short. Two or three sentences are enough.
- Send one follow up at most, a week or two later. Repeated messages damage the relationship.
If the link was removed because your page changed or no longer covered the topic, improve the page before reaching out. An updated resource is a stronger argument than a request.
Reduce future link loss
You cannot stop other sites from changing, but you can make your links more durable.
- Keep URLs stable. Avoid changing URLs without a strong reason, and always redirect when you do.
- Maintain linked content. Pages that earn links should stay accurate and current, so editors have no reason to replace them.
- Build relationships, not just links. Sites that know you are more likely to keep and add links over time.
- Earn links to evergreen pages. Guides and tools that stay useful for years attract links that last longer than links to news posts.
- Watch competitors. Competitor backlinks show which sites link to similar resources, and sites that lost a link to a competitor may welcome a replacement.
Report lost links in context
When you report on backlinks, show lost links next to new ones. A single number for lost links alarms readers without reason. The net change in referring domains, together with notes on any important lost links and the actions taken, gives a fair picture. Most months, the right message is that the profile is growing and the few important losses are being handled.