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Re: CMYK jpeg

by Dennis Payne

Printing services generally want CMYK. Nothing I can do about that. I'm looking at using drivethrucards.com to print some cards. They have a beta service which takes CMYK jpeg that I thought I would use. If that doesn't work I could use Scribus. I loaded it but I decided not to try when it loaded a dialog at an insane size for some reason. (It had to be at least 4 times the width of my screen.) I'll give the imagemagik suggestion a try when I get a chance. If anyone wants to see a prototype card: https://social.freegamedev.net/photos/dulsi/image/6b4a87c2-eb26-4e0a-af26-e… The text has been slightly altered since then and the pentagon around the 12 was cleaned up. On Mon, 2020-11-16 at 01:33 +0000, Logan Brown wrote: > CMYK encoded jpegs are technically within spec ( > https://www.itu.int/rec/T-REC-T.872-201206-I/en) but are exceedingly > uncommon and support is pretty sporatic. Typically a JPEG contains > RGB data encoded as YCbCr. If your application strictly requires CMYK > data, you probably want to consider another file format. > > Logan > From: Dennis Payne via WLUG <wlug(a)lists.wlug.org> > Sent: Sunday, November 15, 2020 8:22:01 PM > To: Worcester Linux Users' Group General Discussion > <wlug(a)lists.wlug.org> > Cc: Dennis Payne <dulsi(a)identicalsoftware.com> > Subject: [WLUG] CMYK jpeg > Anybody know of an easy tool to convert an image into a CMYK color > space jpeg? I found an online site that works but would like to do it > on my machine. Searching has only found how to do it for tiff files. >

Nov. 16, 2020

Re: [EXT] Re: [EXT] CMYK jpeg

by Killea, Ryan B.

I can confirm that imagemagick will do the trick. If you’re using python, and want to do it within your program I’d recommend using PIL. from PIL import Image # image.mode is where the color space currently in use is stored X = Image.open(path) X.convert(‘cmyk’) From: "Krichevsky, Nicholas J. via WLUG" <wlug(a)lists.wlug.org> Reply-To: Worcester Linux Users' Group General Discussion <wlug(a)lists.wlug.org> Date: Sunday, November 15, 2020 at 5:57 PM To: Worcester Linux Users' Group General Discussion <wlug(a)lists.wlug.org> Cc: Dennis Payne <dulsi(a)identicalsoftware.com>, "Krichevsky, Nicholas J." <njkrichevsky(a)wpi.edu> Subject: [EXT] [WLUG] Re: [EXT] CMYK jpeg Looks like you can do this with imagemagick http://www.imagemagick.org/discourse-server/viewtopic.php?t=13359<https://nam03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.imagem…> converting RGB JPEGS to CMYK - ImageMagick<https://nam03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.imagem…> I need to convert a large number of images for my sister's ecommerce shop. Her website automatically handles images provided they are in the CMYK version of JPEG, but not the RGB version, and provided the starting file size is less than 1MB. www.imagemagick.org ________________________________ From: Dennis Payne via WLUG <wlug(a)lists.wlug.org> Sent: Sunday, November 15, 2020 8:22 PM To: Worcester Linux Users' Group General Discussion <wlug(a)lists.wlug.org> Cc: Dennis Payne <dulsi(a)identicalsoftware.com> Subject: [EXT] [WLUG] CMYK jpeg Anybody know of an easy tool to convert an image into a CMYK color space jpeg? I found an online site that works but would like to do it on my machine. Searching has only found how to do it for tiff files. -- Dennis Payne dulsi(a)identicalsoftware.com https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsocial.fr…<https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsocial.fr…> _______________________________________________ WLUG mailing list -- wlug(a)lists.wlug.org To unsubscribe send an email to wlug-leave(a)lists.wlug.org Create Account: https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwlug.mail…<https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwlug.mail…> Change Settings: https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwlug.mail…<https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwlug.mail…> Web Forum/Archive: https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwlug.mail…<https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwlug.mail…>

Nov. 16, 2020

Re: [EXT] CMYK jpeg

by Krichevsky, Nicholas J.

Looks like you can do this with imagemagick http://www.imagemagick.org/discourse-server/viewtopic.php?t=13359 converting RGB JPEGS to CMYK - ImageMagick<http://www.imagemagick.org/discourse-server/viewtopic.php?t=13359> I need to convert a large number of images for my sister's ecommerce shop. Her website automatically handles images provided they are in the CMYK version of JPEG, but not the RGB version, and provided the starting file size is less than 1MB. www.imagemagick.org ________________________________ From: Dennis Payne via WLUG <wlug(a)lists.wlug.org> Sent: Sunday, November 15, 2020 8:22 PM To: Worcester Linux Users' Group General Discussion <wlug(a)lists.wlug.org> Cc: Dennis Payne <dulsi(a)identicalsoftware.com> Subject: [EXT] [WLUG] CMYK jpeg Anybody know of an easy tool to convert an image into a CMYK color space jpeg? I found an online site that works but would like to do it on my machine. Searching has only found how to do it for tiff files. -- Dennis Payne dulsi(a)identicalsoftware.com https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsocial.fr… _______________________________________________ WLUG mailing list -- wlug(a)lists.wlug.org To unsubscribe send an email to wlug-leave(a)lists.wlug.org Create Account: https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwlug.mail… Change Settings: https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwlug.mail… Web Forum/Archive: https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwlug.mail…

Nov. 16, 2020

Re: CMYK jpeg

by Logan Brown

CMYK encoded jpegs are technically within spec ( https://www.itu.int/rec/T-REC-T.872-201206-I/en) but are exceedingly uncommon and support is pretty sporatic. Typically a JPEG contains RGB data encoded as YCbCr. If your application strictly requires CMYK data, you probably want to consider another file format. Logan ________________________________ From: Dennis Payne via WLUG <wlug(a)lists.wlug.org> Sent: Sunday, November 15, 2020 8:22:01 PM To: Worcester Linux Users' Group General Discussion <wlug(a)lists.wlug.org> Cc: Dennis Payne <dulsi(a)identicalsoftware.com> Subject: [WLUG] CMYK jpeg Anybody know of an easy tool to convert an image into a CMYK color space jpeg? I found an online site that works but would like to do it on my machine. Searching has only found how to do it for tiff files. -- Dennis Payne dulsi(a)identicalsoftware.com https://social.freegamedev.net/channel/dulsi _______________________________________________ WLUG mailing list -- wlug(a)lists.wlug.org To unsubscribe send an email to wlug-leave(a)lists.wlug.org Create Account: https://wlug.mailman3.com/accounts/signup/ Change Settings: https://wlug.mailman3.com/postorius/lists/wlug.lists.wlug.org/ Web Forum/Archive: https://wlug.mailman3.com/hyperkitty/list/wlug@lists.wlug.org/message/JH76O…

Nov. 16, 2020

CMYK jpeg

by Dennis Payne

Anybody know of an easy tool to convert an image into a CMYK color space jpeg? I found an online site that works but would like to do it on my machine. Searching has only found how to do it for tiff files. -- Dennis Payne dulsi(a)identicalsoftware.com https://social.freegamedev.net/channel/dulsi

Nov. 16, 2020

Re: vagrant on debian 10 (buster) server

by John Stoffel

John> Has anyone played with vagrant on Debian Buster using libvirt as John> the provider? I can do a 'vagrant up' of a CentOS8 box, but it John> never finishes since it says it's just waiting for a network. Ok, just to give some more details, I've got vagrant working now on my main desktop box, and I think the problem is that I already have a libvirt install on my server, with a Bridged Network setup. So having a bridge setup confuses Vagrant and how it needs to be setup. Haven't gotten it working yet, but I have a better idea of where to look. John

Nov. 16, 2020

Re: Hey Everybody! NO MEETING TOMORROW! Meeting next Thursday (11/19/2020)

by John Stoffel

>>>>> "Tim" == Tim Keller via WLUG <wlug(a)lists.wlug.org> writes: Tim> Definitely! We always use https://meet.jit.si/WlugMA You can go Tim> there and see that your camera works and if it thinks your mic Tim> works. Thanks, I tested it out and I think it will work.

Nov. 12, 2020

Re: Hey Everybody! NO MEETING TOMORROW! Meeting next Thursday (11/19/2020)

by Tim Keller

John, Definitely! We always use https://meet.jit.si/WlugMA You can go there and see that your camera works and if it thinks your mic works. Thanks, Tim. On Wed, Nov 11, 2020 at 5:58 PM John Stoffel <john(a)stoffel.org> wrote: > > If we're still using Jitsi, is there a good place to test it out ahead > of time? > -- I am leery of the allegiances of any politician who refers to their constituents as "consumers".

Nov. 11, 2020

Re: Hey Everybody! NO MEETING TOMORROW! Meeting next Thursday (11/19/2020)

by John Stoffel

If we're still using Jitsi, is there a good place to test it out ahead of time?

Nov. 11, 2020

Hey Everybody! NO MEETING TOMORROW! Meeting next Thursday (11/19/2020)

by Tim Keller

Our next WLUG meeting is Nov 19th, 2020. I've pushed the meeting out a week because I have a prior engagement and frankly this second Thursday snuck up on me. As an aside, are people happy with the Thursday meeting or would a different day in the week work better for people? I'll let you know more details when I get them. Thanks, Tim. -- I am leery of the allegiances of any politician who refers to their constituents as "consumers".

Nov. 11, 2020