Use Browser DevTools when the problem lives inside a webpage or browser runtime. It is the best first tool for request initiators, CORS failures, cache behavior, cookies, payloads, response bodies, and page-load waterfalls. Use an HTTP debugging proxy such as mitmproxy, Charles, Fiddler Everywhere, Proxyman, or HTTP Toolkit when you must capture configurable traffic from a mobile app, desktop app, command-line client, container, or several clients. A debugging proxy is also the strongest choice when you need breakpoints, rewrites, mocks, or replay.
Being met with an error page is never fun, especially when it doesn’t give you any additional information. That’s unfortunately the case with 401 error code. While error codes alone are frustrating, most of them will at least tell you what happened and what you can do to fix it. Not so with 401 error code.
There used to be a long list of “solid” Chrome extensions that promised to make proxy management easier that disappeared faster than a free VPN trial. Proxy SwitchyOmega is one of those that managed to stick around (well, that’s both true and false). A popular proxy manager for devs, scrapers, and network testers — essentially anyone who actually needs control or just doesn’t like digging through Chrome’s settings every time they switch IPs.
HTTP 504 Gateway Timeout means a server acting as a gateway or proxy did not receive a response from an upstream server within the required amount of time.
You can scrape Twitter/X with Python by using browser automation to load profiles and intercept the structured data X sends to its frontend. Our open-source scraper uses Python and Playwright, captures X's GraphQL responses, supports persistent sessions and checkpoints, exports collected data, and can use rotating proxies for larger scraping jobs. The approach avoids relying entirely on fragile HTML selectors and can resume scraping across multiple sessions.
There are so many error codes that you might stumble upon while trying to access a web page. They can range from 1XX to 5XX. Not all the error codes come with details explaining what exactly happened, and those that do might not offer a solution.
Have you ever found yourself sifting through the HTML of a website? It doesn’t matter why you’re doing it, we don’t judge. Trying to click the little ellipses to go one layer deeper into a page only to realize what you’re looking for was actually three layers up and you went down the wrong branch — it’s a frustrating experience. Imagine having to do that for more than a single page, maybe even hundreds or thousands! Madness. A better way must be possible.
Python is a programming language used for everything from website development to data analysis and machine learning. It’s a high-level language, which means it’s closer to how people understand language compared to more low-level languages like Assembly.
JavaScript is one of the most widely used programming languages in the world, along with markup languages such as HTML and CSS, The main purpose of JavaScript is to add functionality to your website, in other words make your website alive. Back in the day websites were static and then JavaScript showed up and solved this problem.
An IP address is a network-layer address used to send data to and from a device, server, router, proxy, or other network interface. Your laptop may have a private address inside your home while websites see a public address supplied by your router, ISP, VPN, or proxy. That distinction is why one device can have several IP addresses—and many devices can appear online under the same one.
An ETL pipeline is a data processing tool used to extract, transform, and load data from various sources into an organized system. It begins with extracting raw data, transforming it into a cleaner format, and then loading it into a database.
Omar Hussein on Sep 8, 2026
