Abhiram Sampath Abhiram Sampath - 2 months ago 18
Javascript Question

Phantomjs - take screenshot of a web page

I'm very new to PhantomJS and need to get my code working asap, so need your help. My requirement is simple, I have a URL (for e.g.http://www.amazon.com/OtterBox-77-24444-Commuter-Series-Optimus/dp/B00A21KPEI/ref=pd_sim_cps_4) and want to take a screenshot of it and preview it on my web page. Meaning, the user clicks on the preview button and PhantomJS needs to preview the web page as PNG/JPEG

Can you all please help me with it? I'm ok with using any other open source too. Your help is highly appreciated.

Answer

I am going to assume you have installed Phantomjs and have created an alias in your .bashrc or have updated your system path to call the Phantomjs binaries. If not, you need to peruse a few beginner tutorials: http://net.tutsplus.com/tutorials/javascript-ajax/testing-javascript-with-phantomjs/

Once you have that set up, you will need to write a simple javascript file that you will call in the terminal (or shell, if you are using Windows). I will provide a simple, example script below.

var WebPage = require('webpage');
page = WebPage.create();
page.open('http://google.com');
page.onLoadFinished = function() {
   page.render('googleScreenShot' + '.png');
   phantom.exit();}

Then, save your js file. Open up your terminal or shell and run the following

phantomjs yourFile.js

That's it. Check the directory where you called the js file and you should have a png file with a screen shot of your web page.

This is very simple and there are a lot of caveats to f-ing with phantomjs, but this is about as basic as I can make it. If you need other recipes for phantomjs, try looking at these example scripts: https://github.com/ariya/phantomjs/wiki/Examples