Convert HTML to an image in Python [closed]

I want to convert following HTML to PNG image in Python.

<html>
    <b>Bold text</b>
</html>

This HTML is, of course, an example.

I have tried 'pisa' but it converts html to PDF, not to image. I can convert HTML to PDF and then convert PDF to PNG, but I was wondering if there is any direct solution (i.e HTML to PNG). Any built-in or external module will work nicely.

If this can be done in Graphicsmagick or Imagemagick, then it will be perfect.

webkit2png. The original version is OSX-only, but luckily there is a cross-platform fork: https://github.com/AdamN/python-webkit2png

lucidbrot

To expand on vartec's answer to also explain how to use it...

Install webkit2png
The easiest way is probably to simply clone the github repo and run the setup.

mkdir python-webkit2png
git clone https://github.com/adamn/python-webkit2png.git python-webkit2png
python setup.py install

This requires python and git to already be installed. For cygwin, this will add webkit2png as a command to the path. I haven't tested this for other terminals/OS.

Run it
Say you have your website in the current directory. (I had a html file that was using a css stylesheet - but there's no need to think about the css file.)

webkit2png something.html -o something.png

Options
webkit2png -h informs us:

Options:
  --version             show program's version number and exit
  -h, --help            show this help message and exit
  -x WIDTH HEIGHT, --xvfb=WIDTH HEIGHT
                        Start an 'xvfb' instance with the given desktop size.
  -g WIDTH HEIGHT, --geometry=WIDTH HEIGHT
                        Geometry of the virtual browser window (0 means
                        'autodetect') [default: (0, 0)].
  -o FILE, --output=FILE
                        Write output to FILE instead of STDOUT.
  -f FORMAT, --format=FORMAT
                        Output image format [default: png]
  --scale=WIDTH HEIGHT  Scale the image to this size
  --aspect-ratio=RATIO  One of 'ignore', 'keep', 'crop' or 'expand' [default:
                        none]
  -F FEATURE, --feature=FEATURE
                        Enable additional Webkit features ('javascript',
                        'plugins')
  -c COOKIE, --cookie=COOKIE
                        Add this cookie. Use multiple times for more cookies.
                        Specification is value of a Set-Cookie HTTP response
                        header.
  -w SECONDS, --wait=SECONDS
                        Time to wait after loading before the screenshot is
                        taken [default: 0]
  -t SECONDS, --timeout=SECONDS
                        Time before the request will be canceled [default: 0]
  -W, --window          Grab whole window instead of frame (may be required
                        for plugins)
  -T, --transparent     Render output on a transparent background (Be sure to
                        have a transparent background defined in the html)
  --style=STYLE         Change the Qt look and feel to STYLE (e.G. 'windows').
  --encoded-url         Treat URL as url-encoded
  -d DISPLAY, --display=DISPLAY
                        Connect to X server at DISPLAY.
  --debug               Show debugging information.
  --log=LOGFILE         Select the log output file

Notable options are the setting of width and height.

Troubleshooting
Using cygwin, I encountered webkit2png: cannot connect to X server :0.0. To fix this (I had already performed export DISPLAY=0.0), I had to start an X-Server. On cygwin, this can be done by running startxwin in a second terminal. Make sure to install it first via the cygwin setup.

Another possible solution is to use GrabzIt's free HTML to Image API for Python. You could then convert your HTML to PDF code like this:

import GrabzItClient
grabzIt = GrabzItClient.GrabzItClient("APPLICATION KEY", "APPLICATION SECRET")
grabzIt.HTMLToImage("<html><b>Bold text</b></html>")    
grabzIt.SaveTo("test.png")

Full disclosure I am the API creator.

来源：https://stackoverflow.com/questions/5633828/convert-html-to-an-image-in-python

标签

python

html

image

ImageMagick

graphicsmagick