These tools are designed to streamline the maintenance of large channel lists:
Older versions (like 1.09) are hosted on the Internet Archive for those looking for specific historical builds. Core Features
Supports various protocols, including HTTP, HTTPS, and Xtream API links. How to Use the Tool Releases · zhimin-dev/iptv-checker - GitHub
Once the check is complete, the tool can save only the working streams into a new, "clean" M3U file.
Beyond just "online/offline" status, many versions capture screenshots, identify video/audio codecs, and detect low framerates.
The zhimin-dev / iptv-checker repository on GitHub is one of the most active versions, offering zip releases for Windows ( x86_64-pc-windows-msvc.zip ) and other platforms.
Depending on your platform and technical comfort level, you can download the "IPTV Checker" zip file from several reputable repositories:
Automatically scans hundreds of links from an M3U file to check their status.

