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All forums => ThumbsPlus v10 Questions => Topic started by: katinka on 2019-06-30 18:15:18

Title: resize to a larger size than the original
Post by: katinka on 2019-06-30 18:15:18
Say my original jpg is 2550 x 3300.  It fits a standard 8.5"x11" printer page.

I want to quadruple (blow up)  the size of this image, so that it prints the entire image in 4 pages.  No matter what I do, I cannot get it to expand beyond one page.
Title: Re: resize to a larger size than the original
Post by: Daan van Rooijen on 2019-06-30 20:44:38
Well, the dimensions of the digital image have no relation to the printing size (except that the print, when viewed from the same distance, will be less sharp the larger you print it).

If you want to print an image over 4 sheets, you should either use a program that lets you print on multiple sheets (not many do), or you should split the image into four images, and print each separately on a single sheet.

To split an image into 4 using ThumbsPlus, you could do this:


Note that you will need a pretty large image if you want it to look sharp when printed on such a large area! When the print is meant to be viewed from close-up, a resolution of 300 dots per inch is recommended. 200 dpi is fine for a poster-size print that hangs on a wall.  So, say you print it on four 8x11" sheets, then the total area would be 16x22 inch. For a 200 dpi print, you'd need an image that's  3200 (16x200) by 4400 (22x200) pixels in size. That's how large the original photo, scan or drawing would have to be. Enlarging that digital image wouldn't help, because enlarging doesn't increase the level of detail in the image.

Good luck!
Title: Re: resize to a larger size than the original
Post by: Daan van Rooijen on 2019-06-30 21:53:28
(having said that, if you're not a 'pixel peeper', a 2550 x 3300 image like from your example can still look pretty good on a 17x22" print).
Title: Re: resize to a larger size than the original
Post by: katinka on 2019-07-01 08:44:30
so how do i force it to print on a 17 x 22?  when I tell my computer to print it, it shows only a one page output
Title: Re: resize to a larger size than the original
Post by: Daan van Rooijen on 2019-07-01 13:27:40
As explained, you either split the image into 4 images manually and print each one separately, or you find a program that can print an image over multiple pages (I have no recommendations there).
Title: Re: resize to a larger size than the original
Post by: runner on 2019-07-12 12:29:31
Hi,

maybe there is an other hint for your need:

1) Transform your file into a PDF File
2) Open it in acrobat reader
3) Choose the print mode
4) Choose your needed filesize
5) Select the butten "poster" (=the german version, I don't now the english Acrobat translation)

I worked with that successfully if I had to print out lager drawings.

Hope it helps.

Best regards Rainer