Imagemagick can even create a gif animation of all the pages of the pdf. $ convert -density 200 demo.pdf demo.jpg 4. Experiment with the value till the desired level of sharpness is achieved. Use a value of around 175 and the text should become clearer than before. This can be fixed using the 'density' option. Using the above command you might notice that the text in the resulting image is not clear or sharp. The above command shall put a white background in the transparent areas. $ convert -thumbnail x300 demo.pdf -flatten demo.jpg To fix this the 'flatten' option can be used as follows If the pdf has transparency then scaling might result into an image where all white areas turn into black. The above will create a thumbnail image of height 300px and correct width according to aspect ratio of the original pdf. $ convert -thumbnail x300 demo.pdf demo.jpg To create thumbnail, the image just needs to be scaled down using either of the 'scale', 'thumbnail' or 'resize' option. Save the file, and re-run the command and it should work.įor more information on fixing the error, check this discussion on stackoverflow: To fix the error edit the following file $ sudo nano /etc/ImageMagick-6/policy.xml The above error is caused due to permission configuration. When using the above command you might get the following error: convert-im6.q16: attempt to perform an operation not allowed by the security policy `PDF' error/constitute.c/IsCoderAuthorized/408.Ĭonvert-im6.q16: no images defined `cc.jpg' error/convert.c/ConvertImageCommand/3258. 0 means the first page and then increment 1 for each page. The 2 in the bracket indicates the index of the page. To convert only a particular page from the pdf file use the following command $ convert demo.pdf demo.jpg If the pdf file has multiple pages then imagemagick shall create multiple image files named as demo-1.jpg, demo-2.jpg. The above command shall generate the jpg format image from the pdf file. Over here we are going to use imagemagick to convert pdfs to images.
Web applications dealing with pdfs sometimes need to create a image or thumbnail of the uploaded pdf. On ubuntu install it by typing the following in a terminal $ sudo apt-get install imagemagickįor windows get the binaries from the website. It also has programming apis for various languages like php, python etc making it easy to use as a library.
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