M3U Playlist Validator: Find Errors and Broken Lines

If an M3U list opens half-way in a player, some channels are missing or the list does not load at all, the problem is usually in the structure of the file. This tool scans your list line by line and finds a missing #EXTM3U header, an #EXTINF without an address, a channel with no name, an invalid address, unquoted attributes and duplicate addresses, and shows them with line numbers.