![]() An extension is effectively a little website, and for sensible security reasons scripts from one website can't easily access the content on another website. The fifth important part of the extension solves the cross-site scripting problem. ![]() The logo, the popup page's html file, the popup page's javascript file, and the manifest.json file which tells Chrome how to bundle these files together into an extension. ![]() There are five important parts to the extension. Here the active tab is on Nokia's homepage and that title is displayed in my extension's popup. My example will get content from the currently loaded page and display it in the Chrome extension's popup. For the important part of understanding how it works, I've drawn some pictures. If you need help installing it follow Google's instructions. ![]() So I’ve learned from it and written a much simpler Hello World Chrome extension for page scraping.ĭownload the source code and the packed extension, and have a look, it's less than 40 lines of code. Sadly, the best guide to building a simple but functional page-scraping Chrome extension is quite complicated. Want to parse the content of a website? More comfortable coding in javascript and displaying your results in HTML than you are using Scrapy at a Python command prompt? A google Chrome extension might be perfect for you. ![]()
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