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2
votes
2answers
123 views

If PNG is Lossless Why Does Difference Blending Mode Show a Difference

I often read that PNG is a lossless format so I decided to do a little experiment to try to prove it. In Photoshop I did Save for Web to PNG-24. Then, I did File->Place to open the PNG and import it ...
1
vote
2answers
837 views

Does a .png file extension on an iPhone image mean that the photo was edited or altered in any way?

I've been told that a photo I took with an iPhone has a .png extension means that the photo has been altered or tampered with. I know I took the pic at that time. Why are some of my photos in the ...
1
vote
4answers
2k views

Difference between PNG and RAW, other than compression?

I know that many professional cameras shoot in RAW. PNG has lossless compression which would allow cameras to save more shots than RAW. This leads me to wonder if there's anything special about RAW ...
5
votes
4answers
12k views

How to batch process images retaining them as PNG in Photoshop?

I need to optimize 700 images in PNG in a batch process, but Photoshop only gives me the option to optimize the images and export them to JPG, when I want to mantain the images on PNG. Is there a way ...
1
vote
1answer
410 views

PSE10 Insert Invisible Watermark

I need to put an invisible watermark in some of my PSE10 edited PNG files, but since I am an amateur, I probably don't need an online subscription right now. How do I easily put an invisible ...
7
votes
3answers
5k views

Is TIFF really of higher quality than PNG-24?

I've been doing some research to try to figure out why more people do not store high-resolution image files as PNG-24. PNG has exactly-reversible, lossless compression, it is a net-friendly format so ...
48
votes
7answers
7k views

Why don't most cameras support PNG format?

I prefer PNG format to JPG, because JPG uses lossy compression. When I capture a screen in my PC or scan a picture or document in my scanner, I always save them as PNG format. If a camera could ...
12
votes
5answers
3k views

How do I go about editing the metadata of a PNG file?

How do I go about editing the metadata of a PNG file? Is there some free software I can use? Thanks in advance.