03-25-2016, 03:19 AM | #1246 |
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Convert comic pdf to reduce file size
Hello,
Just discover K2pdfopt and would like to know if there is a specific parameter to use for this case : I have comics in pdf but with large page size (A4) and global size of more than 100Mo I would like to reduce the page size to Ipad size but keeping the way pages are done (ie : page 4 will still be page 4 with all items in it but with reduced size). Normally, file size shoudl reduced to 20Mo ! Can you help please? Thanks Pat |
03-25-2016, 11:55 PM | #1247 | |
Fuzzball, the purple cat
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Quote:
Code:
k2pdfopt -mode copy -odpi 180 ... Code:
k2pdfopt -mode trim -n- ... The second option will get rid of any excess margins on each page, cropping it only to the visible content. |
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03-26-2016, 01:26 PM | #1248 |
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Holy shit this is the best thing ever, I can finally read those shitty 2-column articles without going crosseyed, I've tried dozens of pdf apps for Android and none do this kind of thing. WELL DONE.
Just a suggestion, I would love a reader on Windows (or a plugin for Sumatra PDF) that does this automatically when I open pdf files so that I don't have to convert everything beforehand (amazingly, conversion to mobile layout makes things WAY more readable even on a laptop screen!) Anyways, thanks again for this software and I hope whoever invented the 2-column journal format burns in hell for eternity |
03-26-2016, 02:35 PM | #1249 | |
Fuzzball, the purple cat
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Quote:
Sorry--can't agree with you on the 2-column format. I actually prefer it for reading journal articles on a normal page-sized format. Besides, it gave me a nice project to work on. Thanks for the enthusiastic feedback. |
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03-27-2016, 12:24 AM | #1250 |
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You can build a desktop emulator for KOReader if you set up the development environment. KOReader embeds k2pdfopt for on-the-fly reformatting on ereaders, but there are no prebuilt binaries for the desktop.
That might be too much work to be worth the effort, though. |
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04-04-2016, 08:33 AM | #1251 |
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Hello,
I'm using K2pdf with your recommandation concerning the parameters (k2pdfopt -mode copy -odpi 180) to use for downsizing the pdf size and it's woorking fine. Thanks. Now, when I look at the result, I'm not really happy with the colors. In fact, the original pdf have pastel colors and the optimized pdf have very strong colors. Is there a way to make the optimized version the same color look as the original? Regards Pat |
04-04-2016, 10:54 PM | #1252 | |
Fuzzball, the purple cat
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Quote:
Code:
-cmax 1 -g 1 |
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04-06-2016, 06:39 AM | #1253 |
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Hi Willus
That's perfect Many thanks Pat |
04-11-2016, 07:16 AM | #1254 |
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I am using the software on Mac and it is great.
However, for some PDF files, I met the error "Segmentation Fault 11" and the process terminated. It is not very convenient while converting a folder. Please |
04-11-2016, 08:29 AM | #1255 |
Fuzzball, the purple cat
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Welcome to MobileRead. Can you post one of the PDFs that causes the segmentation fault so I can test it? If you don't want to post it publicly, send me a private message.
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04-15-2016, 02:08 AM | #1256 |
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I realised that, if I convert this PDF file again, the segmentation fault disappeared, i.e. the error appears only with batch conversion.
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05-07-2016, 10:10 AM | #1257 |
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Hi willus..
Figures and diagrams are often accompanied by a caption. However, k2pdfopt will not treat the caption text as part of the figure and so the caption might end up on the next page if a break occurs. (This is understandable, since the caption is just text.) To circumvent this, I put colored marks before and after the figure + caption and use -bpm2 to keep them together. This works, however now there is no vertical space between the caption and the next paragraph, as seen in the image. Is there some magic that k2pdfopt can do to restore that space? Or maybe a solution is to be able to mark figures manually: That would allow also tables and lists to be treated as a single unit, if desired. |
05-07-2016, 10:33 PM | #1258 | |
Fuzzball, the purple cat
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Quote:
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05-08-2016, 11:23 AM | #1259 |
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Thanks, that helped! Hope it gets fixed, as its a bit tedious now
Last edited by isaacbh; 05-08-2016 at 11:58 AM. |
06-02-2016, 01:51 AM | #1260 |
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If there is an equal sign, =, at end of line, it gets removed
Hi Willus,
I'm using k2pdfopt 2.34b for converting pdfs to be read on Nook. The conversion is fine, but when a line contains an equation, and ends on equal sign, =, for being continued on the next line, the equal sign gets removed in the converted pdf. |
Tags |
ebook apps, k5 tools, kindle tools, kindle touch, tools |
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