How to Fix a 401 Unauthorized Error
A 401 means the server did not accept valid credentials for the requested resource. Read its authentication challenge, check your request and credentials, and distinguish 401 from 403.
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Guides for capturing the web
How to take clean screenshots, turn HTML into images and PDFs, run headless browsers, and give AI agents eyes. Written by the team that builds ScreenshotNeo.
17 Best API Gateways for 2026: How to Choose
Compare 17 API gateways by deployment, security, protocols, operations, and cost, then choose a shortlist that fits your architecture.
How to Implement HTTP/2 in Tomcat
Enable HTTP/2 in Tomcat by adding its upgrade protocol to the right connector, then verify TLS, ALPN, proxy behavior, and stream capacity.
How to Convert a Webpage URL to PDF in Python
Create reliable PDFs from webpage URLs in Python with Playwright, WeasyPrint, or Selenium. Includes layout settings, troubleshooting, security, and automation.
Flask vs. Django: Differences
Compare Flask and Django’s built-in features, architecture, performance, and deployment to choose the right framework for your project.
How to Get JSON with cURL
Learn how to retrieve, format, validate, and POST JSON with cURL, including headers, jq, authentication, debugging, retries, and common errors.
What Are the Different Types of Proxies?
Proxies differ by where they sit in a connection and what traffic they handle. Learn how forward, reverse, HTTP, SOCKS, and transparent proxies work.
How to Generate Images from HTML and CSS
Convert rendered HTML and CSS into PNG, JPEG, WebP, or SVG with Playwright, html2canvas, and a hosted screenshot API.
How to Send Custom HTTP Headers in Ruby
Send custom headers with Ruby’s Net::HTTP, from a one-line GET to authenticated JSON POSTs. Includes TLS, defaults, debugging, and common fixes.
Email Parsing: How to Extract Data from Emails and the Best Tools
Learn how to parse MIME emails, Gmail and Outlook messages, attachments, and invoices, then compare Python, APIs, Zapier, Mailparser, and Parseur.
How to Scrape Brave Search Results
Use Brave’s Search API for structured results, with complete Python, cURL and Node.js examples, pagination, errors, storage and scaling guidance.
Zed: High-Performance Code Editor for Developers
A practical guide to Zed's speed, collaboration, AI, pricing, platforms, remote development, limitations, and switching decision.
How to Configure Python Requests to Use a Proxy
Configure HTTP, HTTPS, SOCKS, authenticated and environment proxies in Python Requests, with TLS troubleshooting, bypass rules and production guidance.
How to Use Python lxml for HTML and XML Parsing
Parse HTML and XML with Python lxml: choose the right parser, query with XPath, handle namespaces, stream large files, and avoid common errors.
How to Parse HTML in Ruby with Nokogiri
Learn to parse HTML in Ruby with Nokogiri, choose HTML4 or HTML5, query with CSS and XPath, handle encoding, and avoid common failures.
How to Configure Proxies with a PAC File
Configure a PAC file to route browser requests through a proxy or directly, with examples, platform setup guidance, security notes, and troubleshooting.
Top Web Scraping Trends for E-Commerce in 2026
Retail scraping attacks remain high as AI crawlers and shopping agents focus on product discovery. Here’s what the 2025 data means for retailers in 2026.
Smart Resize Configuration for Embedded Editors
Configure an embedded editor’s starting size, manual resize handle, or content-driven height growth. Includes TinyMCE and CKEditor examples and troubleshooting.