How do I generate a png file w/ selenium/phantomjs from a string?

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I am using selenium/phantomjs to create png files of html in python. Is there a way to generate the png from an html string or filehandle (instead of a website)? I\'ve searc

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醉酒成梦

2020-12-18 05:22

PhantomJS

var page = require('webpage').create();
page.open('http://github.com/', function () {
    page.render('github.png');
    phantom.exit();
});

This is how to get a screenshot in phantomJS, I've used phantomJS for some time now.

You can find more information here.

Selenium

driver = webdriver.Chrome();
driver.get('http://www.google.com');
driver.save_screenshot('out.png');
driver.quit();

Hope this helps.

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忘掉有多难

2020-12-18 05:23
It seems the lines
```
f = open(myFile,'w')
f.write(htmlString) 
```
Are problematic, as the generated file is empty.

I fixed this issue with
```
with open(myFile,'wt') as f:
    f.write(htmlString)
```
or you might have to add a
```
f.close() to your code
```
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盖世英雄少女心

2020-12-18 05:33

PhantomJS

var page = require('webpage').create();
page.content = '<html><body><p>Hello world</p></body></html>';
page.render('name.png');

You set the content of the page using page.content Then you render it using page.render

Example using phantomjs-node

phantom.create(function (ph) {
  ph.createPage(function (page) {
      page.set('viewportSize', {width:1440,height:900})

      //like this
      page.set('content', html);

      page.render(path_to_pdf, function() { 
        //now pdf is written to disk.
        ph.exit();
      });
  });
});

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名媛妹妹

2020-12-18 05:39

Pure good old python - set the content on any opened page to your target html - through JS. Taking your example code:

from selenium import webdriver

htmlString = '<html><body><div style="background-color:red;height:500px;width:500px;">This is a png</div></body></html>'

driver = webdriver.PhantomJS() # the normal SE phantomjs binding
driver.set_window_size(1024, 768)
driver.get('https://google.com/') # whatever reachable url
driver.execute_script("document.write('{}');".format(htmlString))  # changing the DOM

driver.save_screenshot('screen.png')   #screen.png is a big red rectangle :)
driver.quit()

print "png file created"

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