Dr. Link Check

Dr. Link Check finds links in HTML documents (supporting tags like , , , , , , , , and more) and CSS files (supporting @import and url(...)). It supports URL schemes like http, https, data, and mailto. Links with http and https are checked by connecting to the server, data URLs are checked for syntax errors, and mailto links are verified for valid domains with MX records.

The number of active projects depends on your plan (e.g., 5 for Standard, 10 for Professional). You can delete existing projects to make room for new ones, allowing you to check as many websites as you like. However, only one check can run at a time; additional checks are queued.

Temporary issues like server overload, network hiccups, or rate-limiting can cause errors. Some servers block requests from cloud providers (e.g., Amazon) or return errors despite delivering content. These issues often resolve over time or require adjusting crawling settings.

Yes, when creating a new project, you can enter up to 10,000 URLs into the URL(s) to check field.

You can add an ignore rule under Project Settings → Advanced Settings → Ignore links if... For example: Path ENDSWITH '.jpg' OR Path ENDSWITH '.png' OR Path ENDSWITH '.gif' OR Path ENDSWITH '.svg' OR Path ENDSWITH '.webp'.

Yes, you can subscribe for just one month. If you no longer need the subscription, cancel it under Account → Subscription Settings. You'll retain access until the paid period ends.

You can cancel your subscription via Account → Subscription Settings → Cancel Subscription. Access remains available until the end of the paid period.

No, the crawler does not run JavaScript tracking code, so it has no impact on your analytics.