Looking for a Mass Image Resizer...

Discussion in 'Useful Development Tools' started by AstalThe9, Feb 25, 2018.

  1. AstalThe9

    AstalThe9 Warper Member

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    .. that DOESNT:

    1. Blur the image
    2. Do only one image at a time

    I find alot of programs that do one or the other, but never both. Help!
     
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  2. Kes

    Kes Global Moderators Global Mod

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    I've moved this thread to Useful Development Tools. Please be sure to post your threads in the correct forum next time. Thank you.


    There are already a number of threads discussing this. You might like to check out this thread which appears to have everything you are looking for.
     
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  3. Andar

    Andar Veteran Veteran

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    There is a problem here that you're forgetting and the reason why it is extremely difficult to do both.
    The blurring is caused by the mathematical formulae that guess the color of the new pixels when resizing. To prevent that blur, a number of things need to be known about both the original picture and the target size, and even then it is tricky.
    If you try to resize several pictures at once, that data is usually different for different pictures - so the three options are either calculate everything in singular (no batch processing), use the same data for every picture (increasing blur because the data doesn't fit everywhere) or use a much more complex processing method (which is usually, too extensive to use outside dedicated programs).

    If there were a perfect solution, people would have create those programs already.

    That said, check "thumbsplus", that program has a very good batch processing - but I don't know how many resizing algorithm it has.
     
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  4. Tsukihime

    Tsukihime Veteran Veteran

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    If the tool you're using supports command-line processing, you can write a batch tool to take a list of files and then process each one.
    Then you can just go off and do your own thing while it's working.

    Many *nix tools ported over to windows supports command-line.
     
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  5. SrOscuro

    SrOscuro oO Member

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    Imagemagick, runs from command line, and has a windows version, its free software.
    One of that tools is mogrify (take care, mogrify can overwrite your files, make a backup first or work on a copy)

    Example of resizing all pngs to jpg at 60%:
    mogrify -path fullpathto/directory -resize 60x60% -quality 60 -format jpg *.png

    The documentation of imagemagick has a lot of info about dithering, color, resize methods, etc...

    Its not an easy-to-master tool, but has great potential.
     
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  6. MBTY

    MBTY Villager Member

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    I think Xnconvert can help you.
    To disable 'blur' you must use "Nearest neighbour" resamle method
     

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