Why the watermark matters more than people think
TikTok burns a moving watermark into every video exported through the app: the logo drifts around the frame so it cannot be cropped out, and your username sits alongside it. That is fine when you are resharing inside TikTok, but it ruins the clip everywhere else. Upload a watermarked file to Instagram Reels or YouTube Shorts and the platform's own recommendation systems treat it as recycled third-party content, which is a well-documented drag on reach.
Grabnode asks TikTok for the source rendition rather than the app export, so the frame comes back clean. That also means slightly better picture quality: the app export is re-compressed on your phone, while the source file is the one TikTok's own web player streams.