the same thing happened to me but the solution was a bit simpler than uninstalling imageMagick. It sounds like Rmagick’s config file isn’t updated to use your updated imagemagick so try sudo gem uninstall rmagick sudo gem install rmagick restart your server. I took a closer look and noticed you had Rmagick configured for a … Read more
Use the -set and formatting options. convert *.psd -set filename:base “%[basename]” “%[filename:base].png” See “Long Form Attribute Percent Escapes” and “Filename Percent Escapes” docs. Update The mogrify utility that ships with imagemagick can also be used. mogrify -format png *.psd Note: Be careful with mogrify as the docs state… This tool is similiar to convert except … Read more
White background convert -size 800×800 xc:white white.png xc: used to mean “X Constant Image” but now is just a shorthand for canvas:. This means you can also use: convert -size 800×800 canvas:white white.png and because “white” is the default value if no color is provided, you can also use: convert -size 800×800 xc: white.png convert … Read more
For vector graphics, ImageMagick has both a render resolution and an output size that are independent of each other. Try something like convert -density 300 image.eps -resize 1024×1024 image.jpg Which will render your eps at 300dpi. If 300 * width > 1024, then it will be sharp. If you render it too high though, you … Read more
I think you are at, or beyond, the limits of the ImageMagick documentation and would like to suggest you work out your answer empirically – or if you do get a definitive answer, that you at least test it empirically. I don’t have access to your images, so I generated a reference image myself, as … Read more
You cannot have transparent background colors in your JPEGs. The JPEG file format doesn’t support transparency. If you need transparent background, you need to convert the JPEG to either PNG (high quality, filesize possibly larger than JPEG) or GIF (in case you can tolerate low quality and a range of maximally 255 colors). Example command: … Read more
The GraphicsMagick homepage has a list of differences. But it might be a bit biased. In general, GraphicsMagick seems to be faster (see e.g. this article), with a more stable API and less bugs. Many big websites uses it instead of ImageMagick.
Try using -gravity North (this will move your text to the top of the image) and then adding an offset (-annotate +0+100) to move down your text: convert temp.jpg -gravity North -pointsize 30 -annotate +0+100 ‘Love you mom’ temp1.jpg
Obviously there can be more options, like borders and etc, but if you just want an image of width x height of a given hex color, it’s pretty straight forward. Here’s all it takes to make an 100×100 image of a solid dark red: convert -size 100×100 xc:#990000 whatever.png
If you want to keep the original resolution (lossless) you can try the following command: convert png.png -background white -page a4 myoutput.pdf Based on a comment posted before: https://stackoverflow.com/a/24573341/6747994 @m4tx This command only makes sense if the picture has a resolution above 500x800px, it does not zoom in, to avoid pixelated thumbnails.