Rendering, Style, and Layout: When Things Go Wrong
Crawler Rendering ≠ User Rendering At Tech SEO Connect 2025, our R&D Director, Giacomo Zecchini, showed how crawler behaviour differs…
How Extra HTML Attributes in Canonical Tags Impact Search Engines
TL;DR Our study, sparked by a content management system (CMS) migration anomaly discovered that certain attributes caused Google to ignore…
Google’s JavaScript Rendering Capabilities
In a significant step towards debunking some persistent SEO myths and increasing industry understanding of search engine crawling and rendering,…
Investigating Reddit’s robots.txt Cloaking Strategy
Introduction We recently noticed a post on X by @pandraus regarding Reddit’s robots.txt file. On 25 June 2024, u/traceroo announced…
Discovering and Diagnosing a Google AdSense Rendering Bug
Introduction AdSense is Google’s advertising content platform where publishers can be paid to place advertisements on their webpages. While performing…
Optimising Next.js Image Component for Image Search
All domain and content management systems carry degrees of risk when migrating from one platform to another. Some industries benefit…
Managing Webpages Resources for Efficient Crawling and Rendering
Introduction Search engines have a large, but finite amount of resources. Some websites can be hundreds of millions of webpages…
The Privacy-First Ad Technologies to Replace Third-Party Cookies
Sentiment for business leaders about replacing third-party cookies is negative – 71% of them expect the end of third-party cookies…
Validating Session Isolation for Web Crawling to Provide Data Integrity
Abstract Web crawling tools aim to replicate search engines’ crawling and rendering behaviours by implementing and using web rendering systems….
12 Experiments for Tabbed Content SEO
This experiment was first created in 2018 to understand how Google may react to Bootstrap 4 responsive designed. We have…