How to Switch to a New Tab With browser.pages() in Puppeteer
Find an existing Puppeteer tab by URL or another property, bring it to the front, and handle popups, contexts, errors, and production edge cases.
Blog
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.
How to Wait for Network Requests After page.select() in Puppeteer
Learn the race-safe way to wait for API responses after Puppeteer page.select(), plus request, network-idle, UI-state, timeout, and debugging patterns.
How to Download a PDF of the Current Page with Puppeteer
Use Puppeteer’s page.pdf() to save the rendered page, return PDF bytes, control print CSS, fonts, paper size, backgrounds, and downloads.
How to Fix Puppeteer PDFs That Won’t Download
Puppeteer can generate valid PDF bytes without creating a browser download. Learn to diagnose generation, HTTP headers, response completion, and client errors.
How to Run Puppeteer With an Existing Chrome Installation on macOS
Use Puppeteer with Chrome already installed on your Mac using channel or executablePath, with setup, troubleshooting, compatibility, and automation guidance.
How to Fix Puppeteer Protocol Error: Runtime.callFunctionOn Target Closed
Fix Puppeteer’s “Runtime.callFunctionOn: Target closed” by tracing teardown, unfinished promises, large transfers, and remote browser failures.
Free Website Monitoring Tools for SEO: A Practical 2026 Stack
Use Search Console, PageSpeed Insights, audits and uptime alerts together to monitor SEO without paying. This guide explains what each free tool measures.
How to Translate a Page With Headless Chrome Before Taking a Screenshot
Translate page content in a controlled Headless Chrome workflow, wait for layout stability, and capture a reliable screenshot with Puppeteer or Chrome CLI.
How to Capture Chart.js Charts with Puppeteer
Capture a finished Chart.js chart with Puppeteer. Set predictable dimensions, wait for rendering, and choose between a page screenshot and canvas export.
How to Make an Image Responsive in HTML
Make HTML images fit every screen without distortion using max-width, srcset, sizes, picture, and practical responsive-image patterns.
How to Fix Gray Emojis in Headless Chrome PDF Output
Gray emojis in Puppeteer PDFs usually come from print media colors or missing Linux color fonts. Use this checklist and runnable fixes.
How to Set Browser Profile Settings With Puppeteer
Use Puppeteer’s userDataDir to persist browser data across launches, or BrowserContexts to isolate sessions. Includes runnable examples, troubleshooting, and lifecycle guidance.
How to Generate PDFs with Chromium on AWS Lambda Using Node.js 18
Build a Chromium PDF renderer on Lambda, choose ZIP or container deployment, size resources, and avoid Node.js 18 lifecycle surprises.
Responsive Design vs. Adaptive Design: Key Differences
Responsive layouts flex as space changes; adaptive layouts switch among planned arrangements. Learn how to choose, build, and test both accessibly.
How to Prevent Page Flashing When Taking Puppeteer Screenshots
Stop flashing in Puppeteer screenshots by waiting for the page state you need, then suppressing motion only when it causes the problem.
How to Save a Screenshot as a PDF
Convert a screenshot image to PDF on Windows, Mac, iPhone, or Android, or capture a full webpage as a PDF where supported.
How to Configure the Screenshot Viewport in Cypress
Set Cypress’s app viewport with configuration or cy.viewport(), then choose separately whether a screenshot captures the viewport, full page, or runner.
How to Run a Rust Script
Run a Rust .rs file with rustc, Cargo, rust-script, or cargo-script. Learn commands, dependencies, arguments, troubleshooting, and repeatable workflows.