Events Emitted by Embedded Design Editors
A complete guide to Adobe Embedded Design Editor callbacks, payloads, host actions, publish handling, errors, and integration patterns.
Engineering
Puppeteer, Playwright, Selenium and headless Chrome, and what they take to run well.
Are Python Requests Deprecated? Current Status, Warnings, and What to Do
Python Requests is not deprecated. Learn what the current releases support, why get_connection warnings appear, and how to decide whether to migrate.
Why PhantomJS Uses Huge Memory After Screenshots and How to Fix It
PhantomJS memory can rise after repeated screenshots because of page lifetimes, overlapping async work, or rendering load. Learn how to diagnose and fix it.
TLS Supported Groups: Elliptic Curves and Key Exchange
Understand TLS supported_groups, key_share, elliptic curves, finite-field groups, negotiation flow, configuration, errors, and interoperability.
secp256k1: Security and TLS Elliptic Curve Support
secp256k1 is registered for TLS but not recommended. Learn how it differs from P-256 and X25519, where it fits, and how to test negotiation.
X25519: Security and TLS Elliptic Curve Support
Learn what X25519 does in TLS 1.3, how to verify support, configure groups safely, and troubleshoot negotiation failures.
How to Limit Puppeteer Browser Memory Usage
Control Puppeteer RAM with bounded concurrency, deterministic cleanup, request filtering, measurement, and safe browser recycling.
How to Make Puppeteer Render External JavaScript Pages Correctly
Wait for the content your page actually needs, diagnose empty renders, and capture reliable screenshots from JavaScript-heavy sites with Puppeteer.
Why TestCafe Elements Are Visible but Cannot Be Clicked
A visible TestCafe selector can still be blocked, ambiguous, out of context, or not ready. Diagnose the exact cause and fix clicks reliably.
How to Fix Missing Fonts in Playwright Chromium Production Builds
Fix missing fonts in Playwright Chromium production builds with pinned dependencies, reproducible Docker images, web-font checks, and practical debugging steps.
How to Measure Web Performance with Puppeteer and Headless Chrome
Measure browser performance with repeatable Puppeteer traces, page metrics, Web Vitals context, and practical troubleshooting.
How to Tune Headless Chrome Command-Line Arguments for Performance
A measured guide to tuning Headless Chrome flags: establish a baseline, choose the right headless mode, and avoid unsafe speed tweaks.
Make Playwright Microsoft Edge Screenshots Stable and Platform-Independent
Control Edge, Playwright, fonts, viewport and page state to produce repeatable screenshots across CI platforms, with practical fixes for visual drift.
Using Webhooks in Web Scraping Workflows
Build reliable scrape pipelines with fast webhook acknowledgements, idempotent event handling, durable queues, retries, and recovery checks.
How to Reuse Browser and Page Instances in Puppeteer
Keep Chrome warm, isolate jobs correctly, and reuse Puppeteer pages safely with cleanup, pooling, reconnection, and production patterns.
Why Puppeteer and Cheerio Return the Same Results Every Time
Puppeteer and Cheerio agree when the target content is already in the HTML—or when you inspect the browser before JavaScript changes it. Here’s how to find out which case you have.
Successful Strategies for Reliable Website Screenshots
Create repeatable website screenshots by controlling scope, readiness, rendering conditions, and visual variation with Playwright or an API.
Why Cloudflare Treats Headless Selenium Chrome Differently and How to Test It
Cloudflare does not use a single Selenium rule. Learn which browser signals matter and how to run a controlled, repeatable test on your own zone.