Site owners
A small business owner wants to find old service-page URLs after changing navigation.
The report creates a focused repair list instead of requiring every page to be opened by hand.
Definition guide
What Is a Broken Link Checker? A Clear Guide
A broken link checker is a tool that tests links on a website and reports destinations that cannot be reached as expected. It turns a vague concern about dead pages into a reviewable list of URLs, status signals, and next actions.
Related reading
One-line definition
Start with the angle that matches your question, then return here for the basic concept and its limits.
- broken link checker online free See how an online check works when you want a browser-based way to inspect a site.
- free broken link checker Understand what a free check can cover and which trade-offs matter before you rely on its results.
- dead link checker Compare the language of dead links with broader checks for pages, assets, redirects, and server responses.
Practical uses
Who uses it
The same basic check serves different people: each starts with a different risk and ends with a more usable site.
Content editors
An editor reviews an article library containing links to sources, tools, and internal pages.
They can separate a genuinely failed destination from a link that only needs updated wording or context.
SEO teams
An SEO specialist checks whether crawlers and visitors encounter unnecessary error paths.
They can prioritize internal links, redirect chains, and important pages that no longer resolve cleanly.
Developers
A developer validates links after a migration, redesign, or CMS content import.
A repeatable crawl exposes references that manual spot checks are likely to miss.
The basic process
How it works
A useful check is less mysterious than it sounds: discover links, request destinations, and interpret the result in context.
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1
Discover the URLs
The checker starts from a page or site address, follows accessible links, and builds a list of destinations to test.
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2
Request each destination
It sends web requests and records signals such as response status, redirects, timeouts, access restrictions, and unreachable hosts.
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3
Review the findings
The resulting list helps you confirm the problem, identify the source page, and choose a repair such as updating, redirecting, or removing the link.
Concept at a glance
How it works
A checker is not the same thing as a browser or a human review. Each method answers a different question.
| Automated link check | Manual review | |
|---|---|---|
| Main purpose | Find many link destinations that need attention | Judge whether a page is useful, accurate, and well presented |
| Coverage | Can inspect links across many pages consistently | Usually limited to selected pages or examples |
| Primary signal | Response status, redirect behavior, timeout, or access failure | Human interpretation of content, intent, and relevance |
| Repeatability | Can be run again after changes using the same process | Results may vary with the reviewer and selected pages |
| Best at finding | Misspelled URLs, stale paths, failed hosts, and broken internal references | Outdated claims, poor anchor text, and misleading destinations |
| What it needs next | Confirmation and a suitable repair | A technical check when the issue may be hidden across the site |
Visible outcome
How it works
The change is not cosmetic: a crawl turns scattered link complaints into a traceable repair workflow.
The report guides the next human decision; it does not replace one.
Before: unknown failuresAfter: reviewable findingsHonest boundaries
Can and cannot do
A checker is a diagnostic aid, not a guarantee that every destination is correct, useful, or permanently available.
1
It cannot judge meaning
A URL may return successfully while pointing to a page that is outdated, irrelevant, or misleading.
What to do instead
Read important destinations and compare them with the promise made by the link text.
2
It cannot bypass every restriction
Robots rules, authentication, firewalls, rate limits, and temporary blocks can prevent a complete request.
What to do instead
Review access settings, test with permission, and treat blocked results as needing verification rather than automatic failure.
3
It cannot predict future failure
A working link can break after the check because content, domains, or redirects change.
What to do instead
Schedule sensible rechecks after migrations and important content updates.
4
It cannot repair links by itself
The report identifies candidates, but changing URLs or removing references can affect navigation and editorial intent.
What to do instead
Fix the source page deliberately, then run a second check to confirm the result.
Status signals
Can and cannot do
These familiar response codes illustrate the kinds of technical evidence a checker may surface; the code still needs context.
- The destination responded successfully at the time of the request.
- 200 OK
- The destination points elsewhere and may deserve a direct-link review.
- 301 redirect
- The requested resource was not available at that address.
- 404 not found
Next practical step
Who uses it
Whether you manage one site or a large content library, a structured check gives you a starting point for verification. Review the evidence, fix the source page, and check again after important changes.
Turn link uncertainty into a repair list
- Find failed destinations
- Prioritize important pages
- Verify repairs after changes
Common question
Its own FAQ
Here is the short answer first, followed by the distinctions that make the definition useful in practice.
It is a tool that tests links on a website and reports destinations that fail, redirect unexpectedly, time out, or cannot be accessed. The result helps a site owner locate the source link and decide what to do next.
It usually looks at whether a destination responds and what kind of response it returns. Depending on the tool and access available, it may also identify redirects, timeouts, blocked requests, and the page where each link was found.
The terms are often used for the same general purpose: finding links that no longer work as expected. In practice, some tools use dead link for a failed destination and broken link for the wider checking process, so the exact scope depends on the tool.
No. It can provide useful technical evidence about reachability and response behavior, but a successful response does not prove that the page is relevant, accurate, readable, or current. Important results still need human review.
There is no single schedule for every site. Recheck after migrations, navigation changes, large content imports, or important URL updates, and use a recurring review when the site publishes or changes links frequently.