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Someone Please Help Me Understand Why Is the Gimp Image Size Bigger http://gimpchat.com/viewtopic.php?f=8&t=19503 |
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Author: | P1at1n1um [ Sun Jul 25, 2021 1:31 pm ] |
Post subject: | Someone Please Help Me Understand Why Is the Gimp Image Size Bigger |
GIMP Version: 2.10.22 Operating System: Windows GIMP Experience: New User I Created a Monochrome Bitmap image 3x3 pixel on GIMP, I also created the same 3x3 pixel image on MSpaint aswell, same monochrome bitmap as gimp. but the gimp one is 46% Bigger than the mspaint one. why is it occuring?, and also is there any way for me to reduce the size? example below ![]() |
Author: | rich2005 [ Sun Jul 25, 2021 2:02 pm ] |
Post subject: | Re: Someone Please Help Me Understand Why Is the Gimp Image Size Bigge |
When you come to export the Gimp bmp image, open the Compatibility Options and tick the "Do not write colorspace information" button. That is your extra size. Attachment: bmp-options.jpg [ 35.24 KiB | Viewed 3198 times ] |
Author: | P1at1n1um [ Sun Jul 25, 2021 2:15 pm ] |
Post subject: | Re: Someone Please Help Me Understand Why Is the Gimp Image Size Bigge |
rich2005 wrote: When you come to export the Gimp bmp image, open the Compatibility Options and tick the "Do not write colorspace information" button. That is your extra size. Attachment: bmp-options.jpg Hi, thank you. the compatibility option is not poping up for me when is in mode"image/mode/indexed/use black and white 1 bit pallete" does it work for you? |
Author: | rich2005 [ Sun Jul 25, 2021 3:12 pm ] |
Post subject: | Re: Someone Please Help Me Understand Why Is the Gimp Image Size Bigge |
You only get that dialogue with a RGB image. Just a comment about your test. You are using a 3 x 3 pix image, so any 'overhead' such as colour space info or a color-map for an indexed version will be very noticeable. That overhead is not as noticeable on a larger images, and usually makes an indexed image file size, smaller than a RGB image. A comparison: The Win Paint & Gimp (no info) images = 90 B Gimp (with colorspace info) = 174 B Gimp 2.10 indexed = 158 B This was broken in Gimp 2.10.22 and fixed for Gimp 2.10.24 however a Gimp 2.8 smaller at 142 B, so something changed for the worse. You using Gimp 2.10.22 ? Do you get an Unrecognised or invalid BMP compression format. error ? You need to update to Gimp 2.10.24 see: https://gitlab.gnome.org/GNOME/gimp/-/issues/6114 |
Author: | P1at1n1um [ Sun Jul 25, 2021 3:47 pm ] |
Post subject: | Re: Someone Please Help Me Understand Why Is the Gimp Image Size Bigge |
rich2005 wrote: You only get that dialogue with a RGB image. Just a comment about your test. You are using a 3 x 3 pix image, so any 'overhead' such as colour space info or a color-map for an indexed version will be very noticeable. That overhead is not as noticeable on a larger images, and usually makes an indexed image file size, smaller than a RGB image. A comparison: The Win Paint & Gimp (no info) images = 90 B Gimp (with colorspace info) = 174 B Gimp 2.10 indexed = 158 B This was broken in Gimp 2.10.22 and fixed for Gimp 2.10.24 however a Gimp 2.8 smaller at 142 B, so something changed for the worse. You using Gimp 2.10.22 ? Do you get an Unrecognised or invalid BMP compression format. error ? Got it, Went ahead and updated to the newest version. is there any way i can do the 1bit color monochrome bmp and remove the whitespace so as it acts like MSpaint version? |
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