Why are broken links bad for SEO?

Broken links (404 Page Not Found errors) create poor user experiences, waste search engine crawl budget, and signal to search engines like Google that a website may be abandoned or unmaintained.

How does this client-side Broken Link Checker inspect links?

The tool parses input HTML code or text to extract all anchor tags ( ) and plain URLs. It validates URL syntax and sends asynchronous fetch/HEAD requests to verify active HTTP status response codes.

Is this Broken Link Checker free to use?

Yes, MicroToolStack's Broken Link Checker is 100% free with unlimited link inspections and no registration required.

Free Online Broken Link Checker | Client-Side Hyperlink Inspector

Q: Is my HTML source code saved on remote servers?

No! All HTML DOM parsing and link extraction execute 100% locally inside your web browser session using client-side JavaScript. Your website data remains completely private.

Link Audit Summary

Total Links Found: 0

#	Target URL / Anchor Href	Status	Response Code

Why Fixing Broken Links is Critical for Search Engine Optimization (SEO)

Hyperlinks form the connective backbone of the World Wide Web. Internal links guide users and search engine web crawlers across your site's content architecture, while external links reference authoritative third-party resources. However, over time, external sites change URL structures, delete pages, or go offline entirely—creating Broken Links (commonly triggering 404 Not Found HTTP errors).

Accumulating broken links harms your site's SEO in multiple ways: it degrades user experience, increases bounce rates, wastes Google's allotted crawl budget, and signals that content is unmaintained. Our free Online Broken Link Checker extracts and audits all anchor links directly from your HTML source code.

Common Types of Broken Link Errors

Understanding the root causes of broken web links:

404 Page Not Found: The requested web page or file has been deleted, moved, or renamed on the destination server.
Malformed URL Syntax: Typographical errors in the href attribute, such as missing protocols (http://), extra spaces, or invalid characters.
Server Timeout / 50x Errors: The destination server is unresponsive, overloaded, or experiencing internal service outages.
Expired Domain / DNS Failure: The external domain name has expired or its DNS name servers fail to resolve.

Features of MicroToolStack's Link Inspector

Client-Side DOM Parsing: Parses HTML code blocks dynamically to extract all standard <a href="..."> anchors, relative links, and absolute URLs.
Asynchronous HTTP Status Validation: Validates URL syntax and performs real-time status code verification.
100% Client-Side Privacy: All HTML parsing and link extraction execute locally in your web browser session using JavaScript. No source code or URL lists are transmitted to remote databases.
Free & Unlimited Usage: No inspection limits or account sign-ups required.

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Frequently Asked Questions (FAQs)

How do I check a webpage for broken links?

Paste your webpage HTML source code or a list of URLs into the input box and click "Inspect & Check Links". The tool extracts all links and audits their HTTP status.

Why do some external links fail CORS security checks in browser?

Certain external web servers block direct browser-initiated cross-origin (CORS) fetch requests. In such cases, URL syntax and protocol formatting are validated.

Is my HTML source code saved on remote servers?

No. All parsing runs client-side inside your browser session using JavaScript. Your source code remains completely private.

Is this Broken Link Checker free?

Yes, MicroToolStack's Broken Link Checker is 100% free with no usage limits or sign-up required.

Online Broken Link Checker & Hyperlink Inspector