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A
artisTao
Participant
March 22, 2022
Answered

PNG export will not include metadata

  • March 22, 2022
  • 2 replies
  • 2258 views

Open NEF files in Camera Raw > do my edits > Convert and Save Image button in top right > save / export as PNG (with ALL METADATA clearly selected)

 

When I do this, the file appears where I want it to (Edit folder) without metadata.  DNG or JPEG alway appear to include the metadata, but the DNG's don't like to open in Window's proprietary Photos App in full resolution for some reason, and JPEGs .. I don't like lossy compression.  Oh, and the DNG's won't ever appear elsewhere in the Adobe Creative Cloud or Bridge ecosystem with the edits I made.  They always appear as they did when they were RAW files.  This is enormously frustrating. 

This topic has been closed for replies.
Correct answer elie_dinur

1. The PNG format does not support EXIF or IPTC.

 

2. "DNG's won't ever appear elsewhere in the Adobe Creative Cloud or Bridge ecosystem with the edits I made. They always appear as they did when they were RAW files."

DNGs are Raws and like any other Raws will display embedded JPGs when opened in a non-converter.

2 replies

L
Lumigraphics
Legend
March 25, 2022

JPEG is designed for photos, you'll get much better results vs file size for that than TIFF or PNG. TIFF is great for print but not computer viewing. PNG is best for flat color graphics. And yes, PNG does support a full suite of metadata.

    elie_dinur
    elie_dinurCorrect answer
    Participating Frequently
    March 22, 2022

    1. The PNG format does not support EXIF or IPTC.

     

    2. "DNG's won't ever appear elsewhere in the Adobe Creative Cloud or Bridge ecosystem with the edits I made. They always appear as they did when they were RAW files."

    DNGs are Raws and like any other Raws will display embedded JPGs when opened in a non-converter.

    K
    kmilos
    Participating Frequently
    March 23, 2022
    Then use TIFF export instead (w/ lossless deflate compression + horizontal predictor), should be comparable size to PNG.
     
    quote

    The PNG format does not support EXIF or IPTC.


    By @elie_dinur

     

    Not formally, but there is widespread support when they're stored in the ordinary PNG text chunks as raw text...

    K
    kmilos
    Participating Frequently
    March 23, 2022

    Furthermore, it looks like the 'eXIf' chunk extension has already been registered for the PNG spec update.

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