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myininaya

  • 2 years ago

I think this is a computer science question. Why do you lose sharpness in your pictures when saving a png as a jpeg? Also if I wanted to keep sharpness in a picture but wanted the file extension to change to a more popular file extension, what file extension should I choose?

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  1. agdgdgdgwngo
    • 2 years ago
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    http://stackoverflow.com/questions/2336522/png-vs-gif-vs-jpeg

  2. asnaseer
    • 2 years ago
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    Here is a good comparison of them: http://info.eps.surrey.ac.uk/FAQ/standards.html Basically jpeg is lossy and png is not

  3. asnaseer
    • 2 years ago
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    so you need to weigh up quality vs compression

  4. myininaya
    • 2 years ago
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    I want quality for sure but I want a file extension that is popular (you know to upload on a webpage)

  5. myininaya
    • 2 years ago
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    such as OpenStudy

  6. edumacator
    • 2 years ago
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    Hi Myininaya, The jpeg format allows for image compression, so it looks for similarities in colors in the different areas of the pictures. If the picture is at night and there is a black sky in the background, jpegs compress that part of the picture to allow save on memory. You can keep jpegs pretty clear, but you have to do it by saving it without a lot of compression. You can do that in Photoshop and other photo editing programs, some of them are free. The same programs can convert from one format to another. You have to make sure to use those programs though. Changing the file extension by itself will make the image unreadable. A couple free programs are: http://picasa.google.com/, and http://fotoflexer.com/.

  7. asnaseer
    • 2 years ago
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    PNG is now very widely supported

  8. agdgdgdgwngo
    • 2 years ago
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    JPEG is most suitable for real-world pictures you take with a digital camera, whereas the PNG format is nice for those icons and graphics you design in software .

  9. myininaya
    • 2 years ago
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    Pretend like there was this person named @rebeccaskell94 and she was having issues with a png file I gave her...and that is all I really know...she was having trouble uploading this file to some site *cough openstudy cough*

  10. agdgdgdgwngo
    • 2 years ago
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    lol

  11. myininaya
    • 2 years ago
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    I don't know if it is windows to mac thing or not

  12. myininaya
    • 2 years ago
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    I think she had mac and I had windows

  13. asnaseer
    • 2 years ago
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    PNG is an open standard

  14. agdgdgdgwngo
    • 2 years ago
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    so .png files as profile pictures don't work? or you can't download .png from OS?

  15. asnaseer
    • 2 years ago
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    so it should make no difference if you have a Mac/Windows computer

  16. asnaseer
    • 2 years ago
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    what exactly is the problem being experienced?

  17. agdgdgdgwngo
    • 2 years ago
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    upload to OS*

  18. myininaya
    • 2 years ago
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    I think this avatar I'm using was a png though

  19. asnaseer
    • 2 years ago
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    all images I use on almost any site (including OS) are png files

  20. asnaseer
    • 2 years ago
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    a good test would be to ask her to open locally on her machine - say in the IE browser

  21. myininaya
    • 2 years ago
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    Gosh I don't know then. Hopefully @rebeccaskell94 can make some sense on her end. Thank you guys for attacking this question. You all deserve medals.

  22. myininaya
    • 2 years ago
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    And this might have been a computer science/feedback question...lol.

  23. rebeccaskell94
    • 2 years ago
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    haha Sorry Myin!! my bad. U I have to save the pic to my desktop to change it's format and it gives me like a dozen options but the few that OpenStudy actually accepts, are all blurry. :/ I'm on a mac haha

  24. myininaya
    • 2 years ago
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    @shadowfiend I might should have put this in the feedback group but it also sounded computer sciencey. Anyway what do you think a good file extension would be if you don't want to lose a lot of prettiness in your avatar?

  25. asnaseer
    • 2 years ago
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    I have a mac as well and always use png format pics with no issues.

  26. rebeccaskell94
    • 2 years ago
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    well here let me show you meh picture...give me just a sec

  27. myininaya
    • 2 years ago
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    This was the file I was trying to give her.

    1 Attachment
  28. myininaya
    • 2 years ago
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    Whenever she tried to use it, it would show up blurry because of switching file extensions I guess.

  29. rebeccaskell94
    • 2 years ago
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    ummmm I guess it worked. o.o weird.

  30. myininaya
    • 2 years ago
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    lol. omg,

  31. asnaseer
    • 2 years ago
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    and here is the same file I just saved and re-uploaded...

    1 Attachment
  32. rebeccaskell94
    • 2 years ago
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    xD idk why! Last time I saved it and tried people kept telling me my picture was blurry (it was) Oh well, I look like a boss now. My orange hair, and all.

  33. asnaseer
    • 2 years ago
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    looks like rebecca is going viral! :)

  34. rebeccaskell94
    • 2 years ago
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    Is that good or bad?

  35. asnaseer
    • 2 years ago
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    it faaaaaantaaaaastic! :D

  36. rebeccaskell94
    • 2 years ago
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    haha YAY *high 5* :D

  37. asnaseer
    • 2 years ago
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    *high 5*

  38. shadowfiend
    • 2 years ago
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    Yeah, for the record, stick to PNG if you don't want blurriness. OpenStudy, Windows, and Mac OS X should all support PNG out of the box. Mostly because it is one of my favorite file formats EVAR :p

  39. myininaya
    • 2 years ago
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    Thanks again all! :)

  40. rebeccaskell94
    • 2 years ago
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    haha @shadow and yes! Thank you all so much!

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