In DEVONthink on Mac, I have an HEIF image (a photo taken on my iPhone). Its properties are: 1.7 MB, 4284 × 5712 px, 72 dpi.
I also converted it to a PDF (using DEVONthink). The PDF is 4.1 MB, 151.1 × 201.5 cm, 1 page.
Here’s the interesting part: despite being smaller in size, the HEIF image renders much more slowly in the viewer—you can actually see it appear “square by square.” The larger PDF version, however, displays almost instantly.
Question: Why do HEIF images render more slowly? Would it be best practice to convert all HEIF documents to PDF? If so, is there a way to reduce the file size of those PDFs?
primarily because the HEIF is slow to render in the viewer. Also, the idea was to make the text on the image (it’s a photo from a book / or notes) searchable.
I’d guess the image loads in the way it does due to it having to be decompressed for us. There’s nothing actually wrong here but development could weigh in, if they’d like to.
