I have installed neofetch on my ubuntu. But wallpaper displayed like this photo. Wallpaper only displayed normally while using urxvt default font. I have imagemagick, w3m-img installed. Please help me fix this problem.

Issue #105 also dealt with the same thing, I guess? For now, try to use a bitmap font since I also get this bug when I use Xft fonts.
Yes, I try using terminus font too and image displayed normally. Wheter this issue comes from w3m-img?
URxvt and xft fonts don't play nicely with w3m-img, this isn't a neofetch issue.
This issue has finally been fixed.
Most helpful comment
URxvt and xft fonts don't play nicely with w3m-img, this isn't a neofetch issue.