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Developer tools · #puppeteer
Choose between a shared Puppeteer context and incognito contexts for parallel automation. Compare isolation, memory, startup cost and safety, then use a bounded context pool with proper cleanup and validation.
Reduce Puppeteer bandwidth and load time by aborting image, stylesheet, and font requests with request interception.
Lock viewport and device pixel ratio per target device to capture reproducible Puppeteer screenshots in CI.
A technical guide to generating high-fidelity PDFs using Puppeteer. Covers headless Chrome configuration, navigation strategies, batch optimization, and troubleshooting font and layout issues.
Launch one Chromium instance and create a BrowserContext per session to isolate cookies, storage and permissions for parallel scraping or testing without paying launch overhead per user.
Use one Puppeteer browser and create a browser context per user or test for fast, lightweight isolation. Contexts keep cookies and storage separate while sharing the Chromium process.
Use Chrome DevTools Protocol to intercept and rewrite HTTP requests programmatically, inject auth tokens, block trackers, and simulate failures without browser extensions.
Learn how Puppeteer's page.emulate can fully mimic mobile devices, why setViewport alone is insufficient, and how to verify the emulation in practice.
Learn how to diagnose and resolve 'TimeoutError: Navigation timeout exceeded' in Puppeteer by analyzing network idle states, blocking third-party scripts, and optimizing wait strategies.
nodejs