Remove duplicates
Each absolute URL is checked once to reduce duplicate requests and keep reports readable.
Web Link Checker
Check internal links, external links, image URLs, and common broken-link issues on a webpage.
Link Checker
Web link checker
This link checker parses a, img, link, and script URLs from HTML, removes duplicates, and checks them one by one. Page links are checked by default, while image, CSS, and JavaScript resources can be enabled. Results distinguish successful responses, HTTP failures, and CORS or network blocks.
Base URL support
Relative paths are resolved against the base URL, useful for exported pages or a selected site directory.
Explain blocks
CORS or network blocks are not mislabeled as definite 404s; the report marks unreadable responses separately.
How to use
- Paste HTML with links and provide a base URL for relative paths.
- Enable resource checking if needed, then check links and wait for each result.
- Fix definite HTTP errors. For CORS blocks, allow the current page on the target server.
FAQ
Why is a request blocked by CORS?
The target server decides whether the current page may read a cross-origin response through response headers. A URL opening in a tab does not mean JavaScript can read it; CORS response headers are required.
Does it use HEAD or GET?
It sends HEAD first to avoid transferring a full body, then falls back to GET for 405 or 501 responses. Servers may treat HEAD, CORS, or authentication specially, so confirm important results with real access.
Recommended utilities
You may also need these file utilities
Web Source Viewer
View formatted HTML source code from a URL for learning, debugging, and page structure analysis.
Web Meta Checker
Check webpage title, description, canonical, robots, Open Graph, and other metadata.
Web Performance Analyzer
Analyze webpage resource counts, file sizes, load times, and basic performance issues.