How to Reverse XPath Expressions
Learn when to use XPath reverse axes and when to reverse a sequence, with clear examples, runnable code, and fixes for common predicate and compatibility errors.
How to Find Subdomains of a Domain
Combine certificate logs, search engines, DNS enumeration and validation to build a reliable, authorized subdomain inventory.
How to Take Screenshots with Splash
Use Splash Lua scripts to capture viewport, full-page, cropped, and element screenshots, with runnable examples and troubleshooting.
How to Screenshot a Single Element with Splash
Capture one DOM element as a PNG with Splash Lua, or crop its bounding box when you need padding and precise control.
How to Parse HTML with Regular Expressions
Regex can extract a known pattern from controlled HTML, but it cannot reliably build an HTML document tree. Here’s when to use it, runnable examples, and when to switch to a parser.
Playwright Timeout: How to Change and Fix It
Identify the Playwright timeout scope, change the right setting, and fix flaky waits with runnable TypeScript examples and troubleshooting.
How to Fix Website Screenshot Downloads on iPhone and iPad
Find screenshots in Photos, full-page PDFs in Files, and Safari downloads in their configured folder on iPhone or iPad.
How to Find and Use Fonts for Generated Images
Choose a font, prompt an image generator to render short text, and finish lettering in a design tool when spelling or layout must be exact.
How to Take Full-Page Screenshots with Splash
Use Splash Lua to wait for a page, resize to its full height, and capture PNG or JPEG output—with troubleshooting, alternatives, and API code.
How to Generate Multi-Page Documents from Templates
Learn how to merge structured data into reusable templates, create one or many PDFs, and validate pagination across real-world content.
How to Remove Cookie Banners from Splash Screenshots
Remove cookie banners before capturing a splash screen for a clean, repeatable result. Learn browser, automation, iframe, and screenshot API workflows.
How to Extract Metadata from a Website
Learn to extract title, canonical, robots, Open Graph, Twitter Card, and JSON-LD metadata from raw or JavaScript-rendered pages.
How to Schedule Website Screenshots and Monitor Changes
Schedule website checks, compare screenshots, and get useful alerts. Learn how to choose a monitoring scope, run captures reliably, and investigate changes.
How to Monitor Websites for Content Changes
Learn how to monitor whole pages or specific elements, compare revisions, handle dynamic sites, and send reliable change alerts.
How to Scrape Websites with Dynamic Pagination
Learn how to find the request behind dynamic pagination, follow its real continuation signal, and use Playwright when you need a browser.
How to Download and Upload Files in Puppeteer
Upload files through Puppeteer’s file input or chooser, and handle downloads with explicit browser settings, bounded waits, and integrity checks.
How to Screenshot Facebook
Capture a Facebook post, photo, profile, or screen on any device. Learn the shortcuts, where screenshots are saved, and when Messenger may send an alert.
How to Take Full-Page Screenshots with Pyppeteer
Capture an entire webpage with Pyppeteer’s `fullPage` option, handle lazy-loaded content, and troubleshoot missing sections and browser setup.