ImageMagick is an open source image editing software suite for displaying, converting, and editing raster image files. It supports read/write for more than 100 image file formats.

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19
votes
8answers
21k views

Converting multiple image files from JPEG to PDF format

I want to convert some files from jpeg to pdf. I am using following command. $ convert image1.jpg image1.pdf But I have 100 images. How should I convert all of them to corresponding pdfs? I ...
13
votes
4answers
12k views

How can I convert a PNG to a PDF in high quality so it's not blurry or fuzzy?

There are a lot of questions out there about how to convert a PDF file to a PNG image, but I'm looking to take a nice sharp PNG file and just basically wrap it or embed it in a PDF file without having ...
12
votes
5answers
12k views

Creating a GIF animation from PNG files

Is there a tool to create a gif animation from a set of png files? I tried the convert command from the ImageMagick suite, but this doesn't always succeed. Also, I have several issues with this: I ...
11
votes
1answer
609 views

How to generate a lot of (blank) images files?

For a test, I need to quickly create 1700 jpg-images (even blank) in a defined size 1000x706. I wonder if we could do this with a shell script or a program (like ImageMagick). I wish they called ...
11
votes
3answers
8k views

convert images to pdf: How to make PDF Pages same size

I did something like convert -page A4 -compress A4 *.png CH00.pdf But the 1st page is much larger than the subsequent pages. This happens even though the image dimensions are similar. These images ...
9
votes
3answers
2k views

remove extra tilespace from a montage (ImageMagick) composite image?

I have a bunch of photos. They're all the same height, and I'm trying to put them together into a composite image using ImageMagick's montage program via Bash. The problem is that by default, the tile ...
7
votes
6answers
14k views

How to convert TXT to PDF?

I want to convert .txt files to .pdf. I'm using this: ls | while read ONELINE; do convert -density 400 "$ONELINE" "$(echo "$ONELINE" | sed 's/.txt/.pdf/g')"; done But this produces one "error" -- ...
7
votes
4answers
10k views

pdf to jpg without quality loss; gscan2pdf

When I convert a pdf file to bunch of jpg files using convert -quality 100 file.pdf page_%04d.jpg I have appreciable quality loss. However if I do the following, there is no (noticeable) quality ...
7
votes
4answers
451 views

Iterate over n files?

I've got something fairly simple I want to do. I want to use montage on a directory that contains thousands of images, with very few options, namely: me@home$ montage -size 256x256 DSC01*.JPG.svg ...
6
votes
3answers
203 views

ImageMagick on multiple files

I have converted a single file from BMP to PNG with ImageMagick's convert using the command below convert CD\ Front.bmp CD\ Front.png I have many such files, thus I tried: for f in */*.bmp ; do ...
5
votes
3answers
261 views

How to rescale several images to same size

I have several image files in a directory. These images are similar size and have same background color. How can I make all images same size by adding background like this attached image?
5
votes
1answer
924 views

imagemagick creating one big image by piling up thousand of images of the same width?

I've got a few tens of thousands of images all of 2000 pixel width, and I would like to pile them up in one big image of summed up height and 2000 pixel width. I guess there must be a way to do that ...
5
votes
1answer
143 views

Imagemagick resize

I am familiar with convert -resize % for decreasing a size by percentage but what is the command to increase an image from say 700 pixels to 800 pixels? Horizontal width should resize, too. I need ...
5
votes
3answers
881 views

terminal transparency, Imagemagick, and X11 root window problem

In Ubuntu Natty and in Fedora 12, I have urxvt (with 256 colours), and use ImageMagick (display -window root [...]) to set the root window to a picture. When I use the transparency (-tr) option on ...
4
votes
1answer
438 views

Resize a very tiny xcf image without blurring or dithering it

I have some drawings I made with an Intuos tablet. All of these drawings are 25x35 or so. The color of each pixel was very carefully selected. They're kind of like 'miniatures.' I need to resize ...
4
votes
1answer
2k views

Resizing and croping images to an aspect ratio of 6x4 with width of 1024 pixels

I have a mixed set of images, each one has a slightly different resolution with a slightly different aspect ratio from other images. I have tried using commands like convert -resize and convert ...
4
votes
2answers
2k views

How can I add invisible watermark to images on commandline?

Similar question here but for Tex -document. Imagemagick shows ways of watermarking here but not how to do it as invisible as possible. I currently just obfuscate some functional elements into photos ...
4
votes
1answer
43 views

ImageMagick (or other) for UTF-8 text to image

I'm trying to create many single-character images using convert. The purpose is to provide a plastics specialist with images to print onto keyboard keycaps. The ImageMagick documentation suggests ...
4
votes
1answer
342 views

how to center vertically tiled watermark

I use imagemagick to add a watermark to my photos. The command line is the following: composite -tile -gravity center watermark.png somefile.jpg somefile.jpg But the watermark isn’t centered ...
4
votes
1answer
848 views

convert pdf to image [jpeg|png]

I need to convert pdf files into image files (like: png (prefer), jpeg). I used convert (from the ImageMagick package) but it takes more than 4 seconds for a 2 page pdf file with only tables ...
3
votes
2answers
3k views

Use convert to grab a specific page from a PDF file?

I know I have done this before, so I'm sure it's possible, I just forget how to do it. There's a way to tell convert to grab a specific page of a PDF, and I'd like to keep the format of that page as ...
3
votes
1answer
124 views

Omitting extension with find?

I need to create thumbnails from multiple .png files and would like to do this using ImageMagicks convert utility. To recursively find all files that are not thumbnails themselves, I am using the ...
3
votes
4answers
2k views

convert single-page landscape pdf into rescaled double-page portrait pdf

I'm having trouble using convert to do the following: I have a bunch of single-page pdf files whose geometry corresponds to a landscape A4 sheet. The actual content is visually split in 2 pages. ...
3
votes
2answers
1k views

How to convert a color pdf to black-white?

I'd like to transform a pdf with some coloured text and images in another pdf with only black&white, in order to reduce its dimensions. Moreover, I would like to keep the text as text, without ...
3
votes
2answers
552 views

Oneliner for slicing an image?

I'm looking for a oneliner command that would slice an image into given proportions. Say input would be filename and slice dimensions. Are there any standard command-line tools for this? I tried ...
3
votes
2answers
416 views

Running two animations side-by-side using ImageMagick

I have two animations (.gif files) I want to run side-by-side. Can this be done with ImageMagick? Moreover, I want to start one of the gifs after thirty frames of the other have passed. Can this be ...
3
votes
1answer
110 views

Colour problem when capturing a png of the top panel of the screen

I want to capture a window as a png from within a bash script, using the window's ID. In this case, the window is the top panel.  Using gnome-screenshot the colours are true, as per this image... ...
3
votes
0answers
686 views

Generating a slideshow under linux

Under Windows, one is able to generate a nice slideshow (crossfading between images, applying the Ken Burns effect on each image) on Windows using (Windows) Movie Maker. When I create a slideshow ...
2
votes
5answers
519 views

Bash: Fastest way of determining dimensions of image from URL

I'm trying to figure out a really fast method in bash of determining an images dimensions. I know I could wget the image and then use imagemagick to determine the height and width of the image. I'm ...
2
votes
1answer
1k views

Convert pdf to jpg keeping the same name; resize & create thumbs then rename?

I have a lot of pdf files (3308) on which I must apply four steps: 1) I have to convert all to jpg I found this little script on the web with ImageMagick: batch converting pdf to jpg I want to do ...
2
votes
1answer
423 views

Use convert or ghostscript to grab the odd-numbered pages of a PDF

I have a PDF that consists of several hundred pages of bilingual text. Since I need to use OCR on each language separately, I want to grab the even and odd pages and make two separate PDFs, using ...
2
votes
1answer
1k views

Use imagemagick to convert opaque color to alpha

I have an image with a black background with white elements in the foreground. The image has smoothing, so there are 'in-between' pixels that aren't strictly black or white. I'd like to make the ...
2
votes
1answer
572 views

Imagemagick -quality 85 doesn't work

I run mogrify to compress a JPEG image to 85% quality: $ ls -lah Screenshot.jpg -rw-rw-r--. 1 USER GROUP 440K May 24 12:10 Screenshot.jpg $ mogrify -compress JPEG Screenshot.jpg -quality 85 $ ls ...
2
votes
1answer
189 views

convert pdf to png with resize and adding black border

I try to convert the first page of a book to a png, scale the png to a certain size and add a black border. This is what I tried: convert tmp.pdf\[0\] -background white -alpha remove -border 8 ...
2
votes
1answer
124 views

Remove nth frames of a gif (remove a frame every n frames)

I've recorded a .gif of the screen with ffmpeg. I've used gifsicle and imagemagick to compress it a bit, but it's still to big. My intent is making it small by removing, say, a frame every 2 frames, ...
2
votes
2answers
718 views

Convert a lot of .tif files using imagemagick's mogrify command

I have a lot of tif images in a directory. So I try to convert them into jpg format. I use this command : mogrify -format jpg *.tif But I get an error... an error for each image in fact: mogrify: ...
2
votes
1answer
1k views

How can I use imagemagick's identify command in a script to tell if a JPEG file is invalid or corrupt?

I have a somewhat-kludgey script in which I want to copy valid, complete JPEG files to a photo album directory. I thought I could use ImageMagick's identify command to do this. The web documentation ...
2
votes
2answers
706 views

ZSH: Stripping path, filename and extension from a list of files for piping a command

The syntax for the command convert in ImageMagick is convert source_filename.ext1 destination_filename.ext2 I would like to use zsh to feed it with files in a folder path_to_source and output the ...
2
votes
3answers
384 views

Howto recursively create PDF thumnbails on linux command line

I am able to use ImageMagick to create a thumbnail of the first page of a PDF using: convert -thumbnail x80 95.pdf[0] thumb_95.png This works fine and generates a thumb_95.png file. I have tried ...
2
votes
1answer
598 views

imagemagick's convert unexpectedly changing the background color

what I'm trying to achieve is to pull a simple graphic from a webserver and use imagemagick to change a few colors so that I can then further use this image. This is the imagemagick portion: convert ...
2
votes
0answers
701 views

Using Image Magick Convert to Change Channel Depth?

I want to change an image depth of bitmap for testing purposes. Right now I am trying to get a 2 bit palette image, and a 4444 Hicolor image. I have a true color bitmap. I used the below command ...
2
votes
0answers
242 views

'convert' taking a long time to create a PNG thumbnail

I made a png from a pdf using ghostscript. It was converted very fast (not more than 1 sec), and has good quality. $ identify 1.png 1.png PNG 3508x2480 3508x2480+0+0 8-bit PseudoClass 2c 51KB 0.000u ...
1
vote
2answers
1k views

Command line convert webp to jpg?

I'm using ubuntu 12.04. I've installed libwebp2 & libwebp-dev So far, no example found on the net of converting webp to jpg. Some webp files can easily converted by using imagemagick with ...
1
vote
1answer
459 views

Convert a .jpg to a one page .pdf at a certain location

I'm looking to convert a .jpg into a .pdf, where the .jpg is positioned at a certain coordinate say 30 pixels and centered. Right now I'm just using: convert image.jpg image.pdf
1
vote
2answers
180 views

Convert image with imagemagick command line convert tool

I have an image Image.png. How do I use the ImageMagick command convert to make this file into a Image.jpg file with the following requirements: File size is 200~500 kb. Resolution in not less than ...
1
vote
1answer
41 views

unable to open X server [duplicate]

I am trying to display the dimensions of an image and then resize them with a program my system says is there called Package ImageMagick-6.5.4.7-7.el6_5.i686 already installed and latest version. But ...
1
vote
1answer
232 views

Imagemagick on open wrt router “UnableToOpenConfigureFile”

I have installed Open Wrt on my TP-Link TL-WR740N/ND v4. Everything works fine but the Imagemagick. I have installed it into ram (no enough space on rom ) with opkg # opkg install imagemagick ...
1
vote
1answer
213 views

Imagemagick convert incorrectly sizes landscape pdfs

When I run convert example.pdf example.png I get a png image, but the image in the pdf is off-center and too small. How do I convert so that the png image is the right size and takes the whole ...
1
vote
1answer
114 views

Define length and scale picture

Is there any program under linux where I can do the following: Suppose I have for example a scan of a drawing on a squared paper and suppose that the squares of the original paper have any distance ...
1
vote
1answer
218 views

imagemagick globbing multiple extensions

I have a folder containing photos coming from different cameras. I use Imagemagick to convert to resized and renamed photos in another folder. Something like this: convert "*.jpg" \ -resize 640 ...