I want to crop a singlepage tif file to 2316x2720px:
convert 00000001.tif -crop 2316x2720 -repage 00000001_cropped.tif
When I use this command the result is a multipage tif file with 4 frames.
First frame with 2316x2720px and 3 Frames with the rest.
How I only get the first frame in the tif file?
Without seeing your TIF, I suspect you want this:
convert 00000001.tif -crop 2316x2720+0+0 +repage 00000001_cropped.tif
Related
I was trying to resize a pdf file to 8.5x11 with ImageMagick and in doing so, I am loosing the quality of my pdf file.
I was using convert source.pdf -extent 612x792 destination.pdf command.
Can someone please help me with this one?
Imagemagick is rasterizing the PDF, then scaling it, then producing an output PDF of differing dimensions, which contains raster data only.
Scale a PDF to fit directly like this:
cpdf -scale-to-fit "612 792" in.pdf -o out.pdf
This keeps the PDF's original vector artwork and fonts intact.
Imagemagick uses Ghostscript and will rasterize your PDF. It will not maintain its vectors. If you want higher quality, use a higher -density to rasterize and then resize back to whatever you want. For example, I use a density 4x the default of 72 or 288 and then resize by 25%=1/4 to get back to the nominal size.
convert -density 288 -units pixelsperinch image.pdf -resize 25% result.pdf
You can then include your -density 72 -gravity XX -extent 612x792 before the output.
Or you can compute do -density 288 etc and then just resize to 612x792.
I've tried this and it worked.
convert -density 300 -define pdf:fit-page=Letter -gravity Center source.pdf output.pdf
I am creating preview images of all JPG/PNG/GIF that are uploaded to our server.
For this I use ImageMagick with:
convert -format jpg -quality 90 -strip -background white -flatten -alpha off +repage -resize '255x255>' ".$locationtmp." -write '".$preview."'");
The parameters added are to flatten the background (make it white instead of black).
However, when using the code to create a preview of an animated GIF, the result is distorted.
Example of a distorted result:
I tried to add the +repage parameter but it did not help.
How to get a nice preview of the GIF as PNG? It could also be just the first frame.
In Imagemagick, if you want a preview image for all formats including gif and want just the first frame of the animation for the preview, then just add [0] to the filename, such as animation.gif[0]. This will take the first frame of the animation and the only frames of the other formats such as JPG and PNG that only allow one frame. The appended [0] does not hurt the other formats.
So use
image.suffix[0] in place of just image.suffix
for generating a single image preview
I am converting a pdf to .tiff file using ImageMagick and calling it from python using subprocess,run() but, I want the output file size to be limited to a maximum value say 40MB. -define extent max_value is not working for tiff like it works for jpeg images.
This is my code:
subprocess.run('magick convert -density 150 example.pdf -trim -thumbnail 500 result%04d.tif')
I'm trying to convert and resize GIF file to PNG file with Command :
mogrify.exe -define bmp:format=bmp3 -compress none -resize "300x200>" -antialias -format "png" -units PixelsPerInch -density 72 "img.gif"
But it's creating many images with postfix 0 to 31(img-0.png to img-31.png).
When I use '-flatten', I am getting merge single file but I just wanted first converted file (img-0.png).
Do we have any option for this?
GIF image :
'-flatten' image :
First Image :
Thanks in advance!
When you specify img.gif[0] instead of img.gif only the first frame will be saved. And it looks like you also don't need the -define bmp:format=bmp3 because you are saving the file to png.
I have a large number of research pdf figures, and I need to preform the following actions in ImageMagick:
convert all pdf to png
crop png from left/top corner x:334/y:244; from right/bottom corner x:214/y:340;
original size 2100x2100, cropped size 1552x1552 pixels
resize cropped png to 240x240 pixels
Here is how it should be cropped for point 2, the pink area is what I want to have:
I was only be able to get 1st action done with my knowledge:
mogrify -format png -density 300 -flatten *.pdf
How can I do the 2nd and 3rd actions please? And do I need to run three separated commands or could they be combined into one command?
I do not know what exact order you need for mogrify as I do not use it. I also do not know why you need flatten Try:
mogrify -format png -density 300 -crop 1552x1552+344+244 +repage -resize 240x240 *.pdf