Gray area w ImageMagick “-distort Perspective” despite transparent virtual pixels?

I took this image: and did this: convert -extent 800x600 -background transparent -matte -virtual-pixel transpa...

ImageMagick: put white background under transparent PNG, then invert colors?

I have a PNG image with a black shape on transparent background. I need a white shape on a solid black background in...

ImageMagick: How to make both black and white transparent??

Converting black and dark shades to transparent works fine with ImageMagick. I even managed to perform a crop and re...

ImageMagick creating blank transparent square(s) according to width?

Hey all I am trying to fill in the area with blank circles, but its turning out looking like this: (Sized down in o...

Apply gradient mask on image that already has transparency with ImageMagick??

I've got a PNG image with transparency: original.png Now I want to use ImageMagick to apply a diagonal gradient t...

draw grid with cells of specific size over an image?

How can I draw a grid, 1px black borders no fill, over an image? Each section of the grid should be 480x360px. E.g...

How to specify alpha for imagemagick canvas with opqaue fill drawing objects?

I'm trying to create a vignette filter in imagemagick. It has to be black and transparent for overlaying on other im...

ImageMagick no decode delegate?

I'm trying to convert an image with imagemagick, but I'm getting this error: convert: no decode delegate for thi...

Convert PDF to PNG using ImageMagick?

using ImageMagick, what command should i use to convert a PDF to PNG? I need highest quality, smallest file size. th...

How to produce a unitary thumbnail for a billion of png images??

In the application, there are about 1 billion of png images (size 1024*1024 and about 1MB each), it needs combining ...

Remove text from jpeg?

I have a jpeg containing alpha blended text. Knowing the font and size, I deduced a png file representing the text ...

RMagick installation: Can't find MagickWand.h?

Updating RMagick and Imagemagick is a painful expierence. I have updated the Imagemagick version on my mac (MacOS El...

Glitchiness when I add transparency to a gif and convert it to webm?

Starting off I have this gif from google images: Then I convert the blue to transparency: convert octopus.gif -t...

How to perform ImageMagick gradient call with python wand?

Trying to convert this ImageMagick command to Python Wand code but I don't see a means to create a gradient image wi...

ImageMagick - Making 2 GIFs into side by side GIFs using IM convert?

I have 2 GIFs that are the same length. I want to put the GIFs beside each other to have 1 GIF with both playing at...