How to Self-Host Visual Regression Testing for Websites
Compare website screenshots against approved baselines with Playwright, BackstopJS, or a self-hosted review service. Choose a repeatable workflow and keep visual changes under control.
How to Record Page Videos with Puppeteer
Record browser interactions to MP4 with Puppeteer’s experimental Page.record() API, handle cleanup and failures, and compare it with the obsolete screencast API.
Visual Regression Testing: A Practical Example
Build a Playwright visual regression test, approve its baseline, control screenshot noise, and investigate diffs without mistaking them for functional tests.
How to Extract URLs from a Sitemap
Learn how to extract every URL from XML sitemaps, including sitemap indexes, namespaces, gzip files, limits, errors, and scalable Python code.
Cypress HTML Report with Screenshots
Build a single Cypress HTML report with screenshots using Mochawesome, CI artifacts, failure capture, and practical troubleshooting.
How to Save a Screenshot as PNG
Save screenshots as PNG on Windows and Mac, convert HEIF captures, automate PNG output, and avoid common format and quality problems.
How to Keep Cookie Banners from Covering Automated Screenshots
Choose whether to test consent, returning visitors, or a clean visual capture. Then use scoped Playwright CSS and controlled page state to get the screenshot you actually need.
How to Extract Website Metadata with Screenshots
Extract metadata from the rendered page, preserve duplicates and redirects, then use a screenshot to verify how the page appears.
How to Extract Values from Text Using Patterns
Capture values from text with regular expressions in Python, JavaScript, and C#. Learn named groups, all-match APIs, edge cases, and when to use a parser.
How to Add Custom Scripts to a Page in Puppeteer
Learn when to use addScriptTag, evaluate, and evaluateOnNewDocument in Puppeteer, with iframe examples, timing guidance, troubleshooting, and production patterns.
How to Take Screenshots of Websites That Block Bots
A screenshot captures what a browser can render; it cannot grant access to a site that blocks bots. Here’s how to capture pages you can access, and what to do when access is denied.
How to Install and Use the wkhtmltoimage Binary
Install wkhtmltoimage, convert URLs or local HTML to images, choose capture options, and troubleshoot common issues with this headless Qt WebKit tool.
How to Take a Screenshot with Headless Chrome
Capture web pages from Chrome’s command line, Puppeteer, or Playwright with reliable viewport, full-page, timing, and troubleshooting guidance.
How to Take Website Screenshots Automatically in Webflow
Automate Webflow screenshots with Playwright, scheduling, full-page and element capture, troubleshooting, and a no-browser ScreenshotNeo option.
Search Google Patents and Extract Patent Metadata
Learn a reliable workflow for searching Google Patents, exporting results, extracting metadata, and verifying records with USPTO and EPO sources.
How to Use wkhtmltoimage with PHP
Install wkhtmltoimage, render URLs or HTML from PHP, configure output and timing, and troubleshoot common Linux deployment failures.
How to Fix Puppeteer’s “Target Closed” Screenshot Protocol Error
Puppeteer’s `Page.captureScreenshot: Target closed` means the page target disappeared. Trace page cleanup, pending promises, and Chromium crashes to find the cause.
How to Add a Delay Before Taking a Chrome Headless Screenshot
Use Chrome’s millisecond timeout, virtual time, or a readiness signal to capture pages after they finish rendering.