How to Use Chrome’s Built-In Color Picker
Open Chrome DevTools’ Color Picker, sample colors, switch CSS formats, check contrast, and avoid common gamut and eyedropper mistakes.
How to Install Claude Code: Terminal, IDE, Web, and Desktop Setup
Install Claude Code in the terminal with npm, choose the right Windows and authentication route, and see what to verify before setting up IDE, web, or desktop access.
How to Capture Hover States in Website Screenshots
Learn how to capture reliable CSS and JavaScript hover states with Chrome DevTools, Playwright, Puppeteer, and ScreenshotNeo.
How to Check Docker Logs
Use Docker’s log commands to inspect a container, follow live output, filter by time, and troubleshoot missing logs.
Referrer Policy Test: Check Website Referrer Header Privacy
Test your Referrer-Policy, observe Referer headers, and prevent sensitive paths or query strings from leaking across origins.
How to Run Website Capture Software on Your Own Servers
Deploy website capture software on infrastructure you control, from ArchiveBox on one Docker host to Browsertrix on Kubernetes, with storage and security guidance.
How to Use a Go SDK for Web Scraping APIs
Install a provider’s Go SDK, authenticate safely, make a context-aware scrape request, and handle API and network errors in production.
How to Scrape Walmart Prices and Track Product Changes Over Time
Use Walmart’s authorized APIs to identify products, collect prices, store dated observations, and detect changes without losing history.
How to Run Parallel Lighthouse Tests in Your CI Pipeline
Run Lighthouse audits across CI workers without confusing job parallelism with repeated measurements. Configure LHCI, shard URLs, handle reports, and reduce noisy results.
How to Send Custom HTTP Headers with PHP cURL for Screenshot or PDF APIs
Learn to send authentication, Accept, Content-Type, cookies and custom headers with PHP cURL when calling screenshot or PDF APIs.
How to Inspect Elements in Chrome, Safari, Firefox, and More
Learn how to inspect any webpage element, read its DOM and CSS, debug layouts, and make temporary changes in Chrome, Safari, Firefox, Edge, and other browsers.
How to Run Custom Functions in a Headless Browser
Run JavaScript inside a headless browser with Playwright or Puppeteer. Learn how to pass data, handle async results, run code before page scripts, and call back to Node.js.
Google Chat Open Graph Image Generator
Generate and serve page-specific Open Graph images for Google Chat. Learn the metadata workflow, build it yourself, and troubleshoot stale or missing previews.
Redirect IP Requests to Domain URLs: Test and Fix IP Canonical Issues
Redirect IP and alternate host requests to one canonical HTTPS domain. Configure the redirect, preserve paths and queries, and verify the result.
How to Embed Website Preview Cards
Add page-specific Open Graph metadata so Slack, Messages, and other services can build useful link previews. Learn what to check when a card will not appear.
How to Build a Price Scraper
Build a reliable price scraper with Python, Beautiful Soup and Playwright, then add validation, scheduling, history and alerts.
HTML Table Capture with Ruby: Extract Rows, Handle Spans, and Export CSV
Capture HTML tables in Ruby with Nokogiri: select the right table, normalize spans, preserve UTF-8, export CSV, and automate screenshots.
How to Capture Mobile Websites With JavaScript
Use Puppeteer to render a URL at a phone-sized viewport and save a screenshot, or use the Screen Capture API to record a browser surface with the user's permission.