Legacy ImageMagick Discussions Archive

Did you install from source or binary? if from source, you have to install the delegate libraries for the image types you want such as TIFF, PNG, JPG, etc. Then recompile IM. You can test again by typing convert -list configure and see what is listed under DELEGATES. You can get some old delegates a...

I don't know Imagick, but you probably should be posting this topic to its forum at http://www.imagemagick.org/discourse-server/viewforum.php?f=18 The other thing is that one usually applies +repage after a crop to remove the virtual canvas on the output. But I don't know what the Imagick equivalent...

several possible issues. 1) jpg is lossy as it does compression and may change your output slightly if very thin lines. so try png or gif 2) try supersampling (more) --- set the -density much higher and then scale down appropriately or use -resize (in place of -scale) which uses a better filter. Unf...

note that the above -crop uses +repage (to turn off the virtual canvas) not -repage.

el_supremo, thanks for locating those images. I missed them completely after looking several times. you are right in that they have transparency and that was my point above as you suggest. I don't know how to fix the X11 display to avoid flicker when the images have transparency, except to remove th...

I have looked at both debian reports above and still see no image or link to that image. Sorry I don't read these kinds of things well. So why don't you just put a direct link to the offending image.

have you tried either escaping the ^ (as \^) or putting the size in quotes

convert image -resize WidthxHeight\^ result

or

convert image -resize "WidthxHeight^" result

I cannot find any images in your post to test. But my experience has been that the X11 display flickers when the image has an alpha channel. Remove the alpha channel and it does not flicker. (Mac OSX Tiger)

I have just created and uploaded a new bash/unix script, downsize, to reduce the dimensions of an image such that it achieves a desired file size.

pretty neat!

For it to be installed, it would either need to show in the list of DELEGATES or convert -list format would need to show it as DJVU* DJVU r -- Déjà vu or DJVU* DJVU rw - Déjà vu r says that IM can read it and rw says it can read and write it What version of IM are you using and on what platform? (co...

you likely need to install the DjVu delegate library and then recompile IM. see http://djvu.sourceforge.net/ after installing, then type convert -list configure and look at the line starting with DELEGATES and see if it is listed. Or convert -list format and see if it is listed in the image formats ...

You probably need to post a link to your pdf so others can try to work with it.

Also read http://www.imagemagick.org/Usage/formats/#pdf. It might have some beneficial information.

see -blend at http://www.imagemagick.org/Usage/compose/#blend

-thumbnail is essentially -resize ... -strip that is it basically removes the excess header information and profiles, which is what -strip does. image geometry defines how the arguments of -thumbnail and -resize are used to control how it is scaled up or down. (-geometry is another thing all togethe...