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Thread: Need to make jpg file larger

  1. #1

    Unhappy Need to make jpg file larger

    i need to make a jpg 560 KB and tried using the riot plugin but it only bumps it up to 400 something KB. ive also tried adding a bunch of spam to the jpg attributes such as tags and stars

  2. #2
    Professional User Mij's Avatar
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    The Riot plugin is usually used to reduce the file size, not to increase it. I was able to increase a 420kB jpg to 560kB without problem using it though. When I saved the original at maximum quality (100) instead, it got to 925kB. I would not expect Riot to go any larger than that.

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    Moderator Bhikkhu Pesala's Avatar
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    This is a strange request. Why do you need to make the file size bigger?

  4. #4

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    Quote Originally Posted by Bhikkhu Pesala View Post
    This is a strange request. Why do you need to make the file size bigger?
    because the existing file I want to replace needs to be the same amount or the program realizes its not the original.

  5. #5

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    sorry should have mentioned earlier that the jpg is 1136 x 470 so without riot its only 200KB , is their a riot plugin for PNG? maybe I could get away with renaming the extention once it hits 760KB

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    Quote Originally Posted by Ayex247 View Post
    because the existing file I want to replace needs to be the same amount or the program realizes its not the original.
    I don't think that you will ever be able to modify a raster image file size with any accuracy.

    You can calculate a lossless file ( TGA ) size based on it's image size. My current setup for TGA files uses 18 bytes for the header and 3 bytes per pixel. -David

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    Moderator Bhikkhu Pesala's Avatar
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    Quote Originally Posted by Ayex247 View Post
    because the existing file I want to replace needs to be the same amount or the program realizes its not the original.
    Are you sure that the program is actually testing file size to decide that it's not the original, or is it just looking at time and date stamps, image dimensions in pixels, or something else?

    I suggest contacting the program's author if you want to modify a splash screen or something else.

  8. #8
    Professional User Mij's Avatar
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    Quote Originally Posted by Ayex247 View Post
    is their a riot plugin for PNG?
    I f you have not already discovered the Riot plugin is also used when you select File >Save for Web, and there you can see more clearly what it is doing to JPEG files when attempting to resize the file and what can be achieved by changing to PNG or GIF. (Hint: If you get into changing color depth choose the Xiaolin Wu option to experiment with. The Neuquant option can take forever.)
    As others have said you will probably never be able to accurately match the size of your original file.

  9. #9

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    Quote Originally Posted by Bhikkhu Pesala View Post
    Are you sure that the program is actually testing file size to decide that it's not the original, or is it just looking at time and date stamps, image dimensions in pixels, or something else?

    I suggest contacting the program's author if you want to modify a splash screen or something else.
    yes its compressed and read out of a zip but because the other files are important it thinks something is wrong

    Quote Originally Posted by Mij View Post
    I f you have not already discovered the Riot plugin is also used when you select File >Save for Web, and there you can see more clearly what it is doing to JPEG files when attempting to resize the file and what can be achieved by changing to PNG or GIF. (Hint: If you get into changing color depth choose the Xiaolin Wu option to experiment with. The Neuquant option can take forever.)
    As others have said you will probably never be able to accurately match the size of your original file.

    thanks I will try that, if not I will try approaching the problem from another angle
    Last edited by Ayex247; 04.01.2017 at 06:45 PM.

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