Find what is broken before your visitors do.
Paste any HTML, however long. The scan covers markup, inline scripts and styles, then lists every problem with the line it sits on and a fix you can copy. One click can also repair the safe ones for you.
or press Ctrl + Enter
Scan report
This is a static scan of the text you pasted. Treat each result as a lead to verify. Some findings can be false alarms, and anything that only happens when the page runs (server code, markup built by scripts) is out of reach.