Legacy ImageMagick Discussions Archive

Hello All,

I am trying to convert a png file to pdf format. Using a simple command : convert {inputfile} -set units PixelsPerInch -quiet {outputfile} .

The conversion works fine, but the problem is not the entire image is converted. I mean some part around the edges is being cropped out in the generated pdf. Can any body help me in finding out why this is happening ?

The image magick version that I am using is : ImageMagick 6.2.8 08/25/10 Q16

I suggest you upgrade to the current IM. If that doesn't help, put your PNG on a free site and post the URL here.

hem100 wrote:Hello All,

I am trying to convert a png file to pdf format. Using a simple command : convert {inputfile} -set units PixelsPerInch -quiet {outputfile} .

The conversion works fine, but the problem is not the entire image is converted. I mean some part around the edges is being cropped out in the generated pdf. Can any body help me in finding out why this is happening ?

The image magick version that I am using is : ImageMagick 6.2.8 08/25/10 Q16

Does the PNG image contain offset and canvas info? I.e., oFFs and vpAg chunks?
Use "identify -verbose input.png" to find out.
You can remove those with "convert input.png -strip png_without_offsets.png"
and then proceed as before.

glennrp wrote:

hem100 wrote:Hello All,

I am trying to convert a png file to pdf format. Using a simple command : convert {inputfile} -set units PixelsPerInch -quiet {outputfile} .

The conversion works fine, but the problem is not the entire image is converted. I mean some part around the edges is being cropped out in the generated pdf. Can any body help me in finding out why this is happening ?

The image magick version that I am using is : ImageMagick 6.2.8 08/25/10 Q16

Does the PNG image contain offset and canvas info? I.e., oFFs and vpAg chunks?
Use "identify -verbose input.png" to find out.
You can remove those with "convert input.png -strip png_without_offsets.png"
and then proceed as before.

Hi,

I used the identify -verbose command, below was the output that i received.

• Format: PNG (Portable Network Graphics)
  Class: DirectClass
  Geometry: 800x259
  Type: TrueColorMatte
  Endianess: Undefined
  Colorspace: RGB
  Channel depth:
  Red: 8-bits
  Green: 8-bits
  Blue: 8-bits
  Alpha: 1-bits
  Channel statistics:
  Red:
  Min: 0 (0)
  Max: 227 (0.890196)
  Mean: 9.59083 (0.0376111)
  Standard deviation: 35.7738 (0.140289)
  Green:
  Min: 0 (0)
  Max: 255 (1)
  Mean: 40.7994 (0.159998)
  Standard deviation: 62.7657 (0.24614)
  Blue:
  Min: 0 (0)
  Max: 255 (1)
  Mean: 63.1976 (0.247834)
  Standard deviation: 93.8935 (0.36821)
  Alpha:
  Min: 255 (1)
  Max: 0 (0)
  Mean: 81.7366 (0.320536)
  Standard deviation: 119.004 (0.466683)
  Alpha: ( 0, 0, 0,65535) #000000000000FFFF
  Colors: 7191
  Rendering intent: Saturation
  Gamma: 0.45455
  Chromaticity:
  red primary: (0.64,0.33)
  green primary: (0.3,0.6)
  blue primary: (0.15,0.06)
  white point: (0.3127,0.329)
  Resolution: 299.99x299.99
  Units: PixelsPerCentimeter
  Filesize: 1.2e+02kb
  Interlace: None
  Background color: black
  Border color: #DFDFDFDFDFDF0000
  Matte color: grey74
  Page geometry: 800x259+0+0
  Dispose: Undefined
  Iterations: 0
  Compression: Zip
  Orientation: Undefined
  Signature: a4d7ec50a3b82f4c9c89a4f002cfdfeb8c5096363b527a821a9cd77d2aa109ab
  Software: Paint.NET v3.5.3
  Tainted: False
  Version: ImageMagick 6.2.8 08/25/10 Q16

Out of these which are the offset details ?

Version: ImageMagick 6.2.8 08/25/10 Q16
Out of these which are the offset details ?

Sorry, none of those. We only started printing the PNG chunk data within the past few years.
Your IM-6.2.8 (despite the 08/25/10 annotation) is from August 2006.
I'm not sure we stored the canvas back then, either.
You can find out by using a newer version of "identify".

glennrp wrote:You can find out by using a newer version of "identify".

The new version does provide the chunk information as below :
Properties:
date:create: 2013-02-15T13:03:00+06:00
date:modify: 2013-02-15T13:06:12+06:00
png:bKGD : chunk was found (see Background color, above)
png:cHRM : chunk was found (see Chromaticity, above)
png:gAMA : gamma=0.45455 (See Gamma, above)
png:IHDR.bit_depth : 16
png:IHDR.color_type : 6
png:IHDR.interlace_method: 0
png:IHDR.width,height : 800, 259
png:pHYs : x_res=29999, y_res=29999, units=1
png:sRGB : intent=0 (See Rendering intent)
png:text : 1 tEXt/zTXt/iTXt chunks were found
signature: 68ec8030a698ef0d4ef3cd0c25102123790eeddc537ced5dade4483c0cdd959e
Software: Paint.NET v3.5.3
Artifacts:
filename: /var/www/flexi-wtp-1.0.0/testingwork/b6101e633ff950a424d7cebe7ffe02dc.png
verbose: true
Tainted: False
Filesize: 125KB
Number pixels: 207K
Pixels per second: 10.36MB
User time: 0.010u
Elapsed time: 0:01.019
Version: ImageMagick 6.7.6-1 2012-03-27 Q16 http://www.imagemagick.org

So does that mean the strip command wont work for the version that is installed currently on my server i.e. IM-6.2.8 ?

Because when I tried the strip command it did not have any impact on the generated pdf. What else can I try to sort out this issue ? And the thing is it happens for all the png file not just in case of certain png files.