Legacy ImageMagick Discussions Archive

I don't understand. I want to convert a PNG with a transparent background to a tiff with also a transparent background. This will do that: convert test.png test.tif The generated tiff have an alpha channel, i don't think i want that You can't have a transparent background without an alpha channel (a...

Does Photoshop report the file is a JPEG?

If the file is a badly-written jpeg, the solution may be to open it and re-save it in a more tolerant program (PS or Gimp). If you need to do this often, you could write a script.

Pleasure. Of course, blindly stripping out the profile does change the colour slightly.

-strip will remove profiles etc:

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convert 710006.jpg -strip -quality 50 x.jpg

Adjust quality parameter to suit.

Don't forget that IM will try to read in all the JPEGS and decompress them before doing the processing. How many pixels does each one have? You might look at the problem differently. You don't really want to ocnvert the images. Instead, you want to include them (unconverted) in a PDF documnent. For ...

I know nothing about PDF, but you might try:

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convert *jpg -compress JPEG my.pdf
ls -l my.pdf
convert *jpg -compress JPEG -quality 50 my.pdf
ls -l my.pdf

If my brain was in gear, I would have seen that the four Windows lines: convert xc: -format "set wwm1=%%[fx:%ww%-1]" info:%TEMP%\getsize.bat call %TEMP%\getsize.bat convert xc: -format "set hhm1=%%[fx:%hh%-1]" info:%TEMP%\getsize.bat call %TEMP%\getsize.bat can be simplified to: ...

Does gthumb make thumbnails, ie images with smaller dimensions?

Png doesn't compress photos well. A common program "pngcrush" might shrink them a little. But if you want smaller filesizes, try jpg.

Yes, I think that analysis is about right. The input image might be 100 pixels wide, so the roundrectangle would start at coordinate 0,0 and end at 99,99. So we need the "minus 1". I don't know why Fred (fmw42) started at 1,1. Starting at 0,0 seems fine. Here are my comments on your analys...

The "cut" command (see any Unix documentation) extracts data from a file, in this case data that is delimited by "x", taking the first or second fields. I'm giving you an alternative to the "cut" command, by using convert to write a Windows batch file that sets two envi...

You might install a versions that are less than four year old, and see if you still have the problem.

Translating from Unix to Windows isn't trivial.

"Cut" is a Unix command. For Windows, you can do something like:

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convert %infile% -format "set ww=%%w\nset hh=%%h" info:%TEMP%\getsize.bat

call %TEMP%\getsize.bat

I don't speak perl, so can't help you there. You might try the equivalent shell commands to see if they work. That would narrow down the problem. You might try updating IM. Your script seems to flood-fill the white border with transparent. But his shirt at the border is white, so that would cause pr...

The description makes your script sound very complex. Resizing down, then up again? I suggest you post the script, with an original tif that sometimes goes wrong, and the intermediate files. Your platform and IM version may be relevant. Here is how I would do it (without touching density, which isn'...

For "caret" in the above, read "greater than" (>).

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convert input.jpg -resize "500x500>" output.png

That will teach me not to post in a hurry.

Legacy ImageMagick Discussions Archive

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