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Deep dives into web data infrastructure, extraction techniques, and the future of structured data at scale.
155 articles
TL;DR: XPath and CSS selectors both locate DOM elements, but they solve different problems. CSS selectors are faster and more readable for straightforward selections. XPath wins when you need to traverse the DOM in any direction, match text content, or handle complex conditional logic. Most production projects benefit from using both strategically.
TL;DR: Axios routes requests through a proxy by accepting a proxy object with host, port, and optional auth fields. This guide covers how to set up Axios proxy configuration from scratch: basic wiring, authenticated proxies, HTTPS tunneling, a rotation system using interceptors, SOCKS5 via socks-proxy-agent, and diagnosing common errors. Every snippet is copy-pasteable Node.js code.
TL;DR: A Puppeteer download file workflow has four good shapes: click a button and let Chrome write to a folder you control, run fetch() inside the page and pipe base64 back to Node, drive the Chrome DevTools Protocol with download progress events, or skip the browser and pull the URL with Axios using cookies harvested from the Puppeteer session. Pick by file size, auth, and how the site exposes the link.
TL;DR: Node-Fetch has no built-in proxy switch, so you wire an HTTP, HTTPS, or SOCKS5 agent into the request through its agent option. This guide walks through how to use a proxy in Node-Fetch end to end: authenticated HTTP and HTTPS proxies, SOCKS5, rotation, retries, TLS edge cases, troubleshooting, and the modern undici route for Node 18+ native fetch.
TL;DR: Web scraping JavaScript tables in Python rarely needs a headless browser. Open DevTools, find the JSON endpoint that hydrates the grid, replay it with requests, paginate it, and fall back to Playwright only when the network call is signed, encrypted, or otherwise sealed shut.
TL;DR: This guide shows how to scrape HTML tables in Golang end to end: choose between Colly, goquery, and golang.org/x/net/html, target the right <tbody>, model rows as a typed struct, and export clean JSON and CSV. You also get pagination, anti-block, and JavaScript-rendered table patterns.
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