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Web-scraping dashboard showing 'Response' JSON with 'status_code':200 and 'Live preview' button on dark gradient background

Java Web Scraping Libraries: How to Choose and Use the Best Tools for Your Project

Java is a battle-tested choice for web scraping at scale due to its robust type safety, structured concurrency, safe multithreading, and a mature ecosystem. However, its advantage is also a major pain point: having too many libraries. From jsoup and HtmlUnit to Selenium and Playwright, these libraries exist to simplify web scraping, and yet picking "the right one" is a challenge. This guide will teach you how to choose the right tool based on your project requirements and how to handle modern scraping challenges.

Vilius Sakutis

Last updated: Apr 30, 2026

17 min read

web scraping UI showing JSON response with labels Response, Live preview and Start scraping on dark background

PARSING

Jsoup Parsing HTML: A Complete Java Tutorial

Parsing HTML with jsoup is often the easiest way to extract structured data in Java when a page has no API. It handles imperfect markup, supports CSS selectors, and keeps things lightweight. This guide covers loading HTML, selecting elements, extracting data, and modifying markup – plus what to do when static parsing isn't enough.

Vilius Sakutis

Last updated: Apr 30, 2026

15 min read

Web-scraping interface showing 'Start scraping' and a JSON panel labeled 'Response' with 'Live preview' on a dark dotted background

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Wait for Page to Load in Beautiful Soup: Why It Fails and How to Fix It

Waiting for a page to load when using Beautiful Soup is a common challenge in web scraping, especially when your scraper returns empty results because the page renders content via JavaScript. This happens because Beautiful Soup is a parser, not a browser, so it can’t execute JavaScript or wait for dynamic content to load. To handle this, you can use browser automation tools like Selenium or Playwright, a lightweight option like requests-html, or a Web Scraping API for production-grade workflows.

Lukas Mikelionis

Last updated: Apr 30, 2026

9 min read

PYTHON

How to Fix SSLError in Python Requests: Causes and Solutions

An SSL error means the TLS handshake failed: your application encountered an SSL certificate it couldn't verify, so the connection was rejected. This issue commonly shows up during web scraping or when integrating with external APIs. In this guide, we'll explain what this error means, its causes, and walk you through the right fix for each.

Lukas Mikelionis

Last updated: Apr 24, 2026

7 min read

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BUSINESS AUTOMATION

Puppeteer vs. Playwright: Which Tool Is Better for Web Scraping?

Puppeteer vs. Playwright is a real architectural decision for any production scraping project. The two libraries share a common origin: Playwright was built at Microsoft by engineers who previously worked on Puppeteer at Google. Yet they're different on browser coverage, language bindings, and scraping ergonomics. Performance, stealth, proxy integration, and parallel execution decide which tool fits your pipeline.

Justinas Tamasevicius

Last updated: Apr 24, 2026

8 min read

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Apache Nutch Tutorial: Install, Crawl, Index, and Automate

Scraping a page is simple. Crawling an entire website repeatedly, at scale, while also producing structured data that you can query, can be complex. Most scraping tools aren't designed for it, and that's what Apache Nutch is developed for. Nutch is an open source web crawler with built-in robots.txt compliance and native Apache Solr integration. By the end of this guide, you'll have a scoped crawl pipeline running and your data indexed into Solr.

Lukas Mikelionis

Last updated: Apr 24, 2026

15 min read

Dashboard UI showing response JSON with "status_code":200 and "url":"https://example.com" on dark gradient background

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PYTHON

How to Use a Cloudflare Scraper for Data Extraction

Cloudflare protects over 20% of all websites, and its anti-bot system can shut your scraper down in seconds. A Cloudflare scraper is any tool or script that gets past those defenses to pull data from protected sites. This guide breaks down how Cloudflare spots bots, why most scrapers fail, and how to scrape with Decodo's Web Scraping API.

Mykolas Juodis

Last updated: Apr 23, 2026

7 min read

Code panel showing HTML request beside 'Proxies enabled' and 'Your data is ready!' cards on dark gradient background

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Web Scraping Without Getting Blocked: A Practical Guide for 2026

Web scraping without getting blocked is one of the hardest challenges you might face. Whether you’re a business conducting market research or a solopreneur working on your next big thing, most scrapers fail not because the code is wrong, but because websites now run layered detection that flags bots before a single byte of HTML is returned. This guide breaks down all the detection layers, including network, TLS, browser, and behavioral, and delivers the best techniques on how to overcome each.

Benediktas Kazlauskas

Last updated: Apr 23, 2026

12 min read

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Wait for Page to Load in Playwright: A Practical Guide to Every Waiting Method

Modern web apps don’t load everything at once, so running scripts too early leads to missed data, broken actions, and flaky results. In this guide, you'll learn how to handle waiting in Playwright, including how it behaves in a headless browser environment, covering auto-waiting, selectors, network events, timeouts, custom conditions, and error handling across dynamic pages.

Dominykas Niaura

Last updated: Apr 23, 2026

6 min read

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AutoGPT Integration Guide: Set Up, Customize, and Connect Your AI Agents to External Data

Most AutoGPT tutorials stop at "get it running", but that's the easy part. The harder part that determines whether your agents are useful is connecting them to live data, and AutoGPT helps you fix that. This guide covers AutoGPT local setup, UI navigation, custom Python block development, and the integration patterns that turn AutoGPT into a production workflow tool.

Justinas Tamasevicius

Last updated: Apr 23, 2026

8 min read

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PARSING

Web Scraping with Linux and Bash

Bash may not be the go-to tool for web scraping, but it's more capable than you'd think. This article covers how to make HTTP requests from the Linux command line, parse HTML and JSON output, set up proxy support with Decodo, schedule scrapers using cron and systemd timers, and build a fully working Bash-based scraper from scratch.

Vilius Sakutis

Last updated: Apr 23, 2026

25 min read

PYTHON

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undetected_chromedriver: Guide to Avoid Detection Online

Standard Selenium ChromeDriver is blocked by most protected websites in the first few requests. Anti-bot services like Cloudflare, DataDome, and HUMAN (formerly PerimeterX) can detect automation flags, WebDriver properties, and browser fingerprint gaps before the first page finishes loading. The undetected_chromedriver library patches ChromeDriver to reduce these detection signals and works as a drop-in Selenium WebDriver replacement. This guide shows what actually gets flagged, how the patches work, and how to fill the gaps with proxies and behavioral techniques.

Justinas Tamasevicius

Last updated: Apr 23, 2026

18 min read

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How to Use cURL in JavaScript: Fetch, Axios, and Best Practices

Your cURL command works flawlessly in the terminal. It has for weeks. Then your boss asks, "Can you make this run in JavaScript?" and suddenly you're here. Good news: you have options. You can run the system cURL binary directly from Node.js, or you can ditch cURL entirely and use a native JavaScript HTTP client that does the same job. This article walks through both paths – child_process, node-libcurl, Fetch, and Axios, plus a flag-by-flag cURL-to-JS translation guide and a decision framework so you don't pick the wrong one.

Zilvinas Tamulis

Last updated: Apr 22, 2026

25 min read

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PYTHON

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How to Scrape Shopify Stores: Complete Developer Guide

Most Shopify stores have a built-in JSON endpoint for product data: prices, variants, inventory, images. Web scraping Shopify means requesting /products.json, paginating, and getting the catalog as JSON. But the endpoint is limited to 250 products per page, and some merchants disable it. This guide covers both: the JSON approach for stores that have it, and the fallback for stores that don't.

Lukas Mikelionis

Last updated: Apr 22, 2026

15 min read

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How To Set Axios POST Headers and Manage Headers Across All Request Types

Axios POST headers are one of the most important items for JavaScript developers working with HTTP. Configure them incorrectly, and your requests fail, authentication breaks, or data gets rejected. The good news? Axios gives developers several ways to manage headers, including inline on individual requests, globally via defaults, through reusable instances, and dynamically with interceptors. This guide explores how to use Axios to set headers across all request types, covering POST, GET, PUT, and DELETE requests, plus common pitfalls and fixes.

Justinas Tamasevicius

Last updated: Apr 22, 2026

22 min read

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Residential vs Datacenter Proxies: Which Should You Choose?

At first glance, residential and datacenter proxies may seem the same. Both types act as intermediaries that hide your IP address, allowing you to access restricted websites and geo-blocked content. However, there are some important differences between residential and datacenter proxies that you should know before making a decision. We’re happy to walk you through the differences so you can choose what's right for you.

Vilius Sakutis

Last updated: Apr 22, 2026

7 min read

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How to Bypass PerimeterX: Detection Methods, Tools, and Practical Workarounds

PerimeterX, now HUMAN, is a cybersecurity platform that employs multiple detection techniques to accurately identify and block threats to web applications. Since numerous high-traffic websites rely on PerimeterX, it's almost inevitable that developers will encounter it when web scraping. This guide explains how PerimeterX detects bots, how to bypass it (tools and strategies), and how to troubleshoot common failures.

Justinas Tamasevicius

Last updated: Apr 21, 2026

12 min read

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The $141K Invisible Employee: What Your B2B Tech Stack Is Really Costing You

Most B2B companies treat their SaaS subscriptions as a handful of manageable line items. We decided to calculate the real number from scratch by aggregating pricing for every tool in a typical stack. For a 50-person company, the total exceeds $141K per year – more than the salary of a senior engineer or VP-level hire. Here’s a complete breakdown of how a handful of "just $99/month" subscriptions quietly add up to a six-figure line item.

Benediktas Kazlauskas

Last updated: Apr 21, 2026

7 min read