Converting .jpg images to .png

Question

I've looked around and read the docs, and found no way or solution, so I ask here. Is there any packages available to use Python to convert a JPG image to a PNG image?

Answer 1

You could always use the Python Image Library (PIL) for this purpose. There might be other packages/libraries too, but I've used this before to convert between formats.

This works with Python 2.7 under Windows (Python Imaging Library 1.1.7 for Python 2.7), I'm using it with 2.7.1 and 2.7.2

from PIL import Image  im = Image.open('Foto.jpg') im.save('Foto.png') 

Note your original question didn't mention the version of Python or the OS you are using. That may make a difference of course :)

Answer 2

Python Image Library: http://www.pythonware.com/products/pil/

From: http://effbot.org/imagingbook/image.htm

import Image im = Image.open("file.png") im.save("file.jpg", "JPEG") 

save

im.save(outfile, options...)

im.save(outfile, format, options...)

Saves the image under the given filename. If format is omitted, the format is determined from the filename extension, if possible. This method returns None.

Keyword options can be used to provide additional instructions to the writer. If a writer doesn't recognise an option, it is silently ignored. The available options are described later in this handbook.

You can use a file object instead of a filename. In this case, you must always specify the format. The file object must implement the seek, tell, and write methods, and be opened in binary mode.

If the save fails, for some reason, the method will raise an exception (usually an IOError exception). If this happens, the method may have created the file, and may have written data to it. It's up to your application to remove incomplete files, if necessary.