XPath is a small query language for picking out exactly the parts you want from an XML or HTML document. You write a path, a bit like a folder route on your computer, and it returns the matching elements or values. Something like /invoice/total walks straight to the total of an invoice and ignores everything else.
Imagine a large building with a clear address system: floor, corridor, room number. XPath is that address. Rather than searching every room, you state the exact route and arrive at the right spot instantly. You can also start from the bottom and search upward, so //product[@id='42'] finds that one product no matter where it sits in the tree. That precision is why it pairs naturally with XML, where data sits in a deep tree of nested tags, and why it’s just as useful for reading values out of a web page during scraping or automated testing. Tools like Selenium and Playwright lean on it to click the right button on a page.
XPath supports more than plain paths. You can filter by condition (every product where the price is above 100), grab attributes, or count matches, which makes it a compact way to express a query against structured documents. One line can pull every order over a threshold without a loop in sight. It’s also handy when checking that a feed actually contains the fields you expect, a quick step before deeper data validation.
At TopDevs we reach for XPath when a client needs to extract specific fields from partner feeds, invoices or third-party pages, so the right value lands in their system without anyone copying it across by hand.
