Then Data Miner converts the data scraped into a clean CSV or Microsoft Excel file format for your to download. In my opinion, it only makes sense to use a browser extension if you donвЂ™t want to automate the data extraction or the page youвЂ™re trying to scrape is so javascript heavy itвЂ™s easier to automate the extension than writing a scraping script. Data Miner can scrape single page or crawl a site and extract data from multiple pages such as search results, product and prices, contacts information, emails, phone numbers and more. ItвЂ™s a lot easier to run a scraping script in your favorite language dumping the scraped content into a database than automatically starting the browser, loading the extension, controlling the extension, exporting scraped data to a format like csv, importing that data into a database. Take a look afterwards at the main get-set-fetch background plugins: FetchPlugin (loads an url in a tab and waits for the DOM to stabilize), ExtractUrlPLugin (identifies additional urls to scrape from the current url), ExtractHtmlContentPlugin (actual scraping based on CSS selectors). If you're serious about the subject start by developing a simple chrome extension (from my own experience Chrome throws more verbose extension errors than Firefox): It supports infinite scrolling, clicking and extracting content from single page javascript apps. Take a look at, an open source browser extension that does more than just basic scraping. After a page has been rendered (with or without javascript) you can access the DOM and extract any content you like. You don't have to care about manually setting cookies, discover and construct json http requests. If you think about it using the browser itself is as close as possible to replicating a real user session.

Webscraper chrome extension