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jimlolo
Known Participant
July 9, 2023
Answered

PNG Saves Smaller

  • July 9, 2023
  • 2 replies
  • 185 views

If I open a PNG, use the blur tool once, and re-save, the file is smaller than the original. It's dimenions, and all other parameters, seem the same.

 

Why is it a smaller file and what have I lost in doing this?

 

Thanks.

    This topic has been closed for replies.
    Correct answer Per Berntsen

    The PNG format uses compression to reduce the file size, and the compression is most effective in flat, smooth areas.

    By using the blur tool, you have probably created more smooth areas in the image, which will lead to better compression.

    The compression is lossless, which means that there is no loss in quality.

    2 replies

    J
    jimloloAuthor
    Known Participant
    July 9, 2023

    Thanks. I used very minimal blurring. Just 1 stroke to see if it made a difference, as before, I had done more blurring. It was just a super short test stroke.

    Per Berntsen
    Community Expert
    Per BerntsenCommunity ExpertCorrect answer
    Community Expert
    July 9, 2023

    The PNG format uses compression to reduce the file size, and the compression is most effective in flat, smooth areas.

    By using the blur tool, you have probably created more smooth areas in the image, which will lead to better compression.

    The compression is lossless, which means that there is no loss in quality.

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