PSE: Png- what does 'Interlace' mean?

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PSE: Png- what does 'Interlace' mean?

When saving a png in PSE, it has a checkbox for either 'none', or 'Interlace', can anyone tell me what this means and which one I should check?
Thanks!

Kristy, this is something I wondered about myself, but when I Googled it, I just got more confused, until I came upon this explanation on a scrapbooking forum. (It was the clearest explanation I found.)

Q : When saving elements etc as PNG files should I be saving them as interlaced or none? And what's the difference?

A : Choosing the interlaced option means that it will save the file with several resolutions built into the file. When the file is loaded into an image viewer, it loads the lowest resolutions first, then a higher resolution, and finally the highest resolution image. This is usually only a feature used for web viewing on slower connections. The advantages are that you can see the low quality image quicker, but the file size is much larger (because there are 3-4 copies on the image in the file). I would not recommend saving your .png files as interlaced for scrapbooking purposes.

If you want to see the original post, HERE is the link.

I agree with Robyn... I too have never saved my pngs as interlaced... only larger file and of no real use to you as a designer or scrapper. smiley You won't lose any transparency by saving as none.

Oh thank you ladies! Finally- an explanation that I can understand!! I really appreciate the help!

I know it's 3 years later, but I was looking for this answer just now - and I am grateful that you put this here! smiley

Thank you I also was wondering smiley Good easy explanation