Questions tagged [imagemagick]
ImageMagick is an open source software suite for displaying, converting and editing raster image files.
40
questions
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Vertically stack multiple images using ImageMagick
I would like to combine multiple images into one image using ImageMagick. To explain a little better, I want the result to look similar to this:
That is, I have a number of screenshots, and I want to ...
30
votes
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answers
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How to convert a photo to a black and white image by ImageMagick?
How can I convert a JPEG photo to black and white (not grayscale) image like output of a FAX scanner, by ImageMagick?
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votes
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answers
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Convert HTML to image
Background
Batch convert various syntax-highlighted source files (C, SQL, Java, PHP, batch, bash) into high-resolution images (600dpi), suitable for an eBook and printed book.
Failed Solutions
A ...
99
votes
3
answers
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Can't convert PDF into image, because of 'no images defined' error
I've the following PDF file:
http://www.fmwconcepts.com/misc_tests/pdf_tests/test.pdf
But when I'm trying to convert it via:
$ convert test.pdf test.png
I've the following error:
convert: no ...
58
votes
5
answers
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I want to change DPI with ImageMagick without changing the actual byte-size of the image data
In GIMP there is a very simple way to do what I want. I only have the German dialog installed but I’ll try to translate it. I’m talking about going to Picture -> PrintingSize and then adjusting the ...
19
votes
3
answers
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Command Line loop to run command on all files in a directory (plus sub directories, if possible
I'm assuming this is fairly easy to do, but I have zero experience with Windows's command line utilities. Basically, I need to iterate over all files in a directory (great if it can do sub-directories,...
18
votes
2
answers
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Using Ghostscript to convert multi-page PDF into single JPG?
I know Ghostscript can convert PDFs to JPGs, and in the case of a multi-page PDF, can rip each page to an individual JPG. But is it possible to have it rip them to one JPG, so that the pages are ...
16
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How can I deskew and crop PDFs made from scanned pages *automatically*? [duplicate]
Possible Duplicate:
Which free software can I use to deskew scanned images
I have several PDFs made up of book pages' scans. The scans are made from two pages at a time and some of these scans ...
4
votes
1
answer
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Batch convert 4 PDF pages to one PDF page
I have a PDF with 100 pages. How can I make a new PDF that displays 4 pages on one?
I know that I can do it with Chrome by printing the PDF to new PDF and change this in the options. But I want to ...
3
votes
2
answers
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Cannot run 'display' after ImageMagick install on Ubuntu
I'm trying to install ImageMagick to my Ubuntu box. I've run the following command:
sudo aptitude install imagemagick
Now whenever I try to run 'display' from the command line, I get an error saying ...
2
votes
2
answers
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ImageMagick import command gives error on windows?
I get the following error when I run the import command of ImageMagick from command-line
import: unable to open X sever '(null)' @error /import.c/ImportImageCommand/362 [No such file or directory]
...
1
vote
2
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Accessing parent and grandparent directory from linux find and passing to xargs
I'm trying to do a batch imagemagick conversion on all tiffs in directories.
The structure of the directories looks like:
test
123
456
image.tif
256
857
...
153
votes
2
answers
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How do you re-install a package with Homebrew (Mac)?
Struggling to find good Homebrew documentation (or tutorial)...
In the mean time I need to reinstall ImageMagick that was installed with Homebrew (brew install imagemagick) and not sure if I should ...
76
votes
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Appending images vertically in ImageMagick
convert -append 1.jpg 2.jpg out.jpg
This command appends 1.jpg and 2.jpg horizontally. What is the command to do this vertically?
76
votes
4
answers
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How to crop an image using ImageMagick from the command line?
I am trying to crop a 640x640 image using ImageMagick on the command line.
I need to remove about 20 pixels from the bottom part of the image all the way from left to right. A long strip along the ...