I'm working with base64 files and i would like to convert a base64jpg image in a base64png image. Is there a way to do it?
The reason is i'm using rsvg-convert to convert svg files into png files, but when i have a base64jpg in my svg, it's not working, But it works with base64 files.
In ImageMagick, this works for me.
Create JPG base 64 file:
convert rose: rose.jpg
convert rose.jpg inline:rose_base64jpg
The text file rose_base64jpg shows:
data:image/jpeg;base64,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
Convert from base 64 JPG to base 64 PNG:
cat rose_base64jpg | convert inline:- PNG:- | convert - inline:rose_base64png
The text file rose_base64png show:
data:image/png;base64,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I have a bunch of base64 encoded images which I want to convert to their corresponding image files using magick (ImageMagick version 7). I can paste the base64 directly into various online converters which works. But command-line magick is failing.
Example of a file is attached in "x.txt". Pasting it into an online converter like https://onlinejpgtools.com/convert-base64-to-jpg readily yields an image. But this command line fails:
magick inline:`cat x.txt` x.png
This says "magick: corrupt image". If I remove the "inline" part, I get "magick: unable to open image". Here is a link to download the sample file x.txt:
In Imagemagick, try (no cat). That works for me.
magick inline:x.txt x.png
Or pipe from cat to magick as
cat tmp.txt | magick inline:- y.png
I have found multiple posts regarding this issue and everyone is recommending ImageMagick but for me, it doesn't seem to work as intended and I don't see too many docs on their site regarding .jpg->.pdf conversion.
Is there some alternative, preferably CLI tool?
Or can I somehow debug why ImageMagick doesn't work for me? I don't get any errors I just get corrupted files as a result.
My usecase
My os is Windows and
I have 64 .jpg files called 0.jpg, 2.jpg, ... 63.jpg and I would like to merge all those images into one .pdf file.
I have tried these commands:
magick *.jpg out.pdf
convert *.jpg out.pdf
but in both cases, I am unable to open the out.pdf file because it is corrupted. I have noticed that I can only convert 0.jpg file to pdf correctly but when I try to convert any other of my 64 jpg files then as a result I am getting a corrupted .pdf file
For example:
This gives me the correct .pdf:
magick 0.jpg 0.pdf
but this gives me corrupted .pdf:
magick 2.jpg 2.pdf
I assume that this a reason why I can't merge all of the files into one not corrupted .pdf file and my assumption is that there is something wrong with the rest of my .jpg files but I have no idea how to debug this issue. Every other .jpg file looks exactly the same as the one .jpg I can convert and all of them open without issues.
magick identify -verbose foobar.jpg results:
I can convert 0.jpg file to .pdf correctly but 2.jpg results in corrupted .pdf.
There are some apparent differences but I am not sure what those properties mean in the context of .jpg -> .pdf conversion
One thought is that someone has converted the grayscale image to color with 3 equal channels so that it IM says it has colorspace RGB. However, the JPEG colorspace tag is 2, which says it has no specific colorspace.
Properties:
date:create: 2021-04-01T17:29:06+00:00
date:modify: 2021-04-01T05:18:58+00:00
exif:ExifOffset: 46
exif:ExifVersion: 48, 50, 50, 48
exif:PixelXDimension: 960
exif:PixelYDimension: 1508
exif:Software: Google
jpeg:colorspace: 2
jpeg:sampling-factor: 2x2,1x1,1x1
From the JPG docs
ColorSpace
0 = Bi-level
1 = YCbCr, ITU-R BT 709, video
2 = No color space specified
3 = YCbCr, ITU-R BT 601-1, RGB
4 = YCbCr, ITU-R BT 601-1, video
8 = Gray-scale
9 = PhotoYCC
10 = RGB
11 = CMY
12 = CMYK
13 = YCCK
14 = CIELab
It is possible that this conflict or lack of colorspace may confuse certain viewers after the file is imbedded in a PDF vector shell.
Thank you #Mark Setchell for pointing me in the right direction by sharing this command:
magick identify -verbose XXX.jpg
My images are grayish so I don't know why majority of the files has sRGB colorspace but after converting colorspace to Gray I can convert them to .pdf properly (I don't see any difference when I open up my .jpgs after conversion to grayscale).
Using this command I can change colorspace to Gray:
magick 2.jpg -colorspace gray gray2.jpg
Then I can convert "grayscale" .jpgs to .pdf by simply:
magick gray2.jpg gray2.pdf
P.S.
If anyone has some better solution I will gladly accept it but if nothing shows up I am going to accept this
#fmw42
Here is a .zip file that contains
20.jpg - source image
20.pdf - corrupted pdf after running >magick 20.jpg 20.pdf
gray20.jpg - source image converted to gray by >magick 20.jpg -colorspace gray gray20.jpg
gray20.pdf - source image converted to .pdf after changing colorspace to gray first by >magick gray20.jpg gray20.pdf
Keep in mind that this image is from some weird manga but I have tried to pick the most normal page (it was harder than it seemed to be but this image itself is not nsfw)
Image Magick version in use is 6.8.8.1.
Via command line on windows I am just trying to convert a *.pdf file into .jpg file using the following command
convert -density 100 -colorspace RGB "input.pdf" "output.jpg"
But the resulting output.jpg file is with a black image (there is no content). Any one out there could please guide on this ?
When you open this PDF-file by using a text-editor and it's header contains something like this:
%PDF-1.5
%¦éÏÄ
4 0 obj
<</Length 5 0 R/Filter /FlateDecode>>stream
....
....
then you have to decode this flat-encoded stream first before you can convert it to an image.
To solve this problem:
You can use the GUI-Tool pdftk free, set your environment-path to the bin-folder within the pdftk-folder and execute:
pdftk ENCODED_FILENAME.pdf output DECODED_FILENAME.pdf uncompress
in the shell to deflate/unzip this file.
Create a new file that is not encoded or zipped.
Hope this helps.
Set alpha flag to off in convert command.
Is it possible to convert a tiff image to mode 1-bit image using command line tools. I saw it can be done with gimp but I need to run a script so I prefer a solution using packages like imagemagick etc
If the image contents is already black and white, and you just need to convert, use:
convert input.tif -depth 1 output.tif
If you also require to threshold the image, use something like:
convert input.tif -separate -black-threshold 128 -depth 1 output.tif
I am trying to convert a 8 page pdf to 8 separate pbm files, using imagemagick. When I do convert test.pdf test.jpg, 8 jpg files (test-0.jpg, test-1.jpg ..) are created, but when I use the command convert test.pdf test.pbm only 1 pbm file (test.pbm) is created. What should I do?
convert test.pdf out-%0d.pbm
This will give you out-0.pbm out-1.pbm... I don't know why imagemagick does this automatically for jpg but not for pbm.. If you want to pad the number to be 000-999 then add a "3" in front of the d.
Example:
convert test.pdf out-%03d.pbm