Tagged Questions

1
vote
1answer
54 views

Converting PDF to images preserving the vectorial quality

I'm using ImageMagick to convert some PDF to files to PNG images, and I'm experiencing some quality problems because the generated image has very low quality. I played with the density, resample, ...
2
votes
2answers
101 views

How to identify the format of images in a pdf?

I have received a number of pdf files with images in them. The original images have been lost, so I need to extract them. I have Adobe Acrobat Pro, so I extracted them using Advanced > Document ...
2
votes
1answer
717 views

Apple Automator “New PDF from Images” maintaining same filename

I will potentially have 26k of old legacy PICT images to transfer first to PDF for migration. I am using Apple Automator and also the "Dispense Items Incrementally" to loop through it. However, I ...
0
votes
0answers
102 views

Maintain image size when converting from pdf to png with imagemagick/ghostscript

I'm using the command convert myimage.pdf myimage.png to convert images in PDF format in various sizes (eg. 100x50 mm or 90x80mm) to PNG. However, the converted image always has roughly A4 format, ...
4
votes
1answer
427 views

Thumbnail generation with imagemagick doesn't render the correct colors

Generating thumbnails of PDFs with imagemagick sometimes renders incorrect colors. We're using an old version of imagemagick (6.5.7-8, that's the version installed on the heroku servers). Here is the ...
4
votes
2answers
1k views

How can I deskew and crop PDFs made from scanned pages *automatically*? [duplicate]

Possible Duplicate: Which free software can I use to deskew scanned images I have several PDFs made up of book pages' scans. The scans are made from two pages at a time and some of these ...
2
votes
2answers
380 views

Can I use ImageMagick to remove the password from a PDF?

If I have a PDF and I have its password, I can merely send it to a PDF printer to get a new PDF with the same contents and no password. The process is not exactly painless though (Ubuntu's inbuilt PDF ...
3
votes
2answers
698 views

PDF => raster, is it possible to adapt the sampling resolution to the input page size?

I am using convert (Imagemagick component, delegating to Ghostscript in background) to transform the first page of PDF files to images. Usually, convert -density 200 file.pdf[0] first_page.png will ...
1
vote
2answers
1k views

JPG files are too small when converted from PDF with imagemagick

I'm on Ubuntu 10.04 with imagemagick. I used this command: convert myfile.pdf -density 300 file.jpg This works well, but the JPGs are only about an inch high. How can I preserve the paper size in ...
0
votes
1answer
235 views

Image to PDF quality

I am converting multiple jpg images to a single PDF using following command convert *.jpg mybook.pdf but the pdf quality is not good. Is there a way to retain the original quality of images in ...
0
votes
2answers
3k views

How to turn a PDF document upside down [duplicate]

Possible Duplicate: How to save rotated Adobe pdf file? I'd like to rotate by 180 degrees each page in a high-resolution .pdf, but don't know how. In ImageMagick, using 'convert -flip ...
1
vote
1answer
402 views

Imagemagick convert creates monochrome output only

I have a book scan as a pdf. When I open it with Adobe Reader, it looks like grayscale. When I open it with IrfanView, it looks like grayscale, and the Information option tells me that the image is ...
8
votes
2answers
8k views

Using Ghostscript to convert multi-page PDF into single JPG?

I know Ghostscript can convert PDFs to JPGs, and in the case of a multi-page PDF, can rip each page to an individual JPG. But is it possible to have it rip them to one JPG, so that the pages are ...
1
vote
1answer
1k views

Imagemagick PDF to JPG conversion failing

I'm trying to convert the first page of a PDF to a JPG. I'm pretty sure I got this to work with certain PDFs, but is it really possible that certain PDFs are made incorrectly and cannot be converted? ...
8
votes
6answers
12k views

How to merge pdf:s using Imagemagick (resolution problem)

When I try to merge two .pdf files using Imagemagick convert pdf1.pdf pdf2.pdf temp.pdf the resulting temp.pdf file seems to have very low resolution. How can I keep the resolution same as in the ...
1
vote
2answers
972 views

Imagemagick, Snow Leopard and PDF Conversion

Having difficulties with Imagemagick and Snow Leopard. Imagemagick was installed using the install script from here here. Everything builds and installs correctly. Imagemagick behave normally for ...