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INP-Zilla's Launch Impacted Performance, But Google's Tools Helped Us Recover

INP-Zilla's introduction caused a dip in our performance. But with Google's help, we're back on top.

In this picture we can see a web page, in the web page we can find some text and a machine.
In this picture we can see a web page, in the web page we can find some text and a machine.

INP-Zilla's Launch Impacted Performance, But Google's Tools Helped Us Recover

INP-Zilla, a novel library designed to comprehend and enhance JavaScript callback behaviours, was recently introduced. However, its official launch in March 2024 had a significant impact on performance scores, causing concern among users.

Initially, the introduction of INP (Interaction to Next Paint) as a new Core Web Vitals metric in the fall of 2023 posed challenges. Our website, previously the top-performing CMS across Core Web Vitals, saw its advantage reduced due to the new metric. INP's complexity made it difficult for other technology providers to address, including us.

Google, however, stepped in to help. In 2024, they developed new tools to analyze and optimize JavaScript callback behaviour, focusing on INP. Our engineering team utilised these tools and restored our website's separation from the pack, matching our 2021 performance levels. Google's latest core updates further prioritised technical SEO, favouring better performance and user experience.

While INP-Zilla's initial impact was significant, our engineering efforts, bolstered by Google's new tools, have helped us regain our competitive edge. As Google continues to prioritise performance and user experience, understanding and optimising INP remains crucial for maintaining a high-performing website.

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