Hi Pixelkiln, thank you so much for the deep technical check and for taking the time to test the header image! Since I am a beginner using mostly online tools for my workflow, it seems one of those steps is writing the corrupted EXIF data. I really appreciate the ImageMagick tip. I will use an online EXIF-stripper/optimizer tool to clean all the PNGs and remove those broken chunks. Once I update the clean files on my page, I'll definitely post back here so you can run your checks again. Thanks for helping me improve!