The New Era of Google Core Web Vitals: Welcome to INP
For years, Sydney business owners have been told that website speed is the key to ranking on Google. You’ve probably spent hours optimizing images, caching pages, and tweaking your WordPress settings to get those green scores on Google PageSpeed Insights. But as of March 2024, Google officially changed the rules of the game by replacing First Input Delay (FID) with a much stricter and more comprehensive metric: Interaction to Next Paint (INP).
If your business relies on local search traffic in highly competitive areas—whether you’re a boutique law firm in the Sydney CBD, a bustling medical practice in Parramatta, or an e-commerce brand based in Surry Hills—this update directly impacts your bottom line. A slow, unresponsive website is no longer just an annoyance to your visitors; it is now an active barrier to your organic search visibility.
In this guide, we will unpack what INP is, why it is the ultimate SEO battleground for WordPress sites in 2024, and actionable steps your business can take to stay ahead of the competition.
What is Interaction to Next Paint (INP)?
To understand INP, we first have to understand how Google measures user experience. While older metrics like Largest Contentful Paint (LCP) measure how fast a page *loads*, Interaction to Next Paint measures how *responsive* a page is when a user actually interacts with it.
Think of it this way: a user lands on your site and clicks a ‘Book Now’ button or toggles an FAQ dropdown menu. INP measures the exact amount of time that elapses between that click and the moment the browser actually paints the next frame on the screen showing the result of that action. If there is a noticeable delay—even a fraction of a second—your INP score suffers.
- Good (Fast): Under 200 milliseconds. The page feels snappy and instantaneous.
- Needs Improvement: Between 200 and 500 milliseconds. There is a slight, sluggish delay.
- Poor (Slow): Over 500 milliseconds. The page feels frozen, leading users to double-click or abandon the site.
Why INP Matters for Sydney SMEs and WordPress Sites
WordPress powers over 43% of the internet, making it the most popular Content Management System (CMS) in Sydney. However, its flexibility is also its Achilles’ heel. Many local businesses build their WordPress websites using heavy, bloated page builders (like Elementor, Divi, or WPBakery) and stack dozens of unoptimized plugins on top of them. This creates a mountain of complex JavaScript that clogs the browser’s main thread.
When a user tries to click a button on a bloated website, the browser is too busy processing heavy design scripts, tracking pixels, and animation codes to respond immediately. This results in a poor INP score, which can lead to:
- Lower Google Search Rankings: Google actively prioritizes websites that offer a superior user experience. Sites with poor Core Web Vitals are gradually pushed down the search results.
- Increased Bounce Rates: Modern users expect immediate feedback. If your mobile menu takes half a second to open, visitors will leave and head straight to your local competitors.
- Reduced Conversion Rates: Whether you are generating leads or selling products, friction kills conversions. Faster interactions lead to higher trust and more completed transactions.
Common WordPress Culprits Behind Poor INP
If your WordPress site is struggling with responsiveness, the root cause is almost always JavaScript execution. Here are the most common culprits we find during our technical SEO audits at WP Pro:
1. Bloated Page Builders
Traditional drag-and-drop builders load massive CSS and JavaScript files on every single page, even if those elements aren’t being used. This delays the browser’s ability to render new visual updates during user clicks.
2. Heavy Third-Party Scripts
Embedded scripts such as live chat widgets, Google Maps, Facebook Tracking Pixels, and hotjar heatmaps run constantly in the background. If these scripts are not loaded asynchronously, they hijack the main thread and delay user interactions.
3. Unoptimized Menus and Popups
Mobile navigation menus that rely on heavy jQuery or complex animations are prime suspects for high INP. If the mobile menu button doesn’t open the menu instantly, it triggers a poor INP score.
Actionable Steps to Optimize INP on WordPress
Optimizing for INP requires shifting your focus from overall page load time to runtime performance. Here is how you can tackle this on your WordPress website:
1. Transition to the WordPress Block Editor (Gutenberg)
At WP Pro, we advocate for clean, lightweight development. Moving away from heavy builders and embracing native Gutenberg or block-based frameworks (like GeneratePress or Kadence) significantly reduces the DOM depth and eliminates unnecessary JavaScript, instantly improving your INP.
2. Defer and Delay Non-Essential JavaScript
Use optimization plugins like WP Rocket or Perfmatters to delay the execution of non-critical JavaScript until user interaction occurs. This ensures that essential page elements respond immediately when clicked, while tracking scripts and chat widgets load in the background afterwards.
3. Break Up Long Tasks
If your site must run complex scripts, work with a professional developer to split ‘Long Tasks’ (any task that blocks the main thread for more than 50ms) into smaller, asynchronous operations. This allows the browser to pause its background processing and prioritize rendering the user’s interaction.
4. Utilize a Sydney-Based CDN
Latency matters. If your target audience is in Sydney, ensure your website uses a Content Delivery Network (CDN) with edge servers located in Sydney. This reduces the physical distance data must travel, speeding up asset delivery and interaction responsiveness.
Get a Fast, Future-Proof Website with WP Pro
Navigating technical SEO and Core Web Vitals can be overwhelming for busy business owners. If your website feels sluggish or your search rankings are starting to slip, it’s time to bring in the experts.
At WP Pro, we specialize in building lightning-fast WordPress websites engineered for ultimate SEO performance and high conversion rates. Our Sydney-based team of developers and SEO strategists can audit your site, pinpoint INP bottlenecks, and implement clean, sustainable optimizations that keep you ahead of Google’s algorithm changes.
Ready to boost your local rankings and speed up your site? Contact WP Pro today for a comprehensive Core Web Vitals and SEO audit.
