Why Interaction to Next Paint (INP) is Your New SEO Battleground in Sydney
If you run a business in Sydney, you already know how fierce the digital competition is. Whether you’re a boutique law firm in the CBD, a bustling café in Surry Hills, or an e-commerce brand operating out of Alexandria, your website is your digital storefront. But in 2024, simply having a gorgeous website isn’t enough. It has to react instantly.
In March 2024, Google officially replaced First Input Delay (FID) with Interaction to Next Paint (INP) as a Core Web Vital. This isn’t just another technical acronym to ignore; it is a critical ranking factor that directly impacts how Google views your site and, more importantly, how your users experience it.
At WP Pro, we specialize in building lightning-fast WordPress websites that convert. In this guide, we will break down what INP is, why it matters for your Sydney business, and actionable steps you can take to dominate your competition by optimizing it.
What is Interaction to Next Paint (INP)?
Unlike metrics that measure how fast a page loads initially (like Largest Contentful Paint), INP measures responsiveness. Specifically, it tracks the latency of all click, tap, and keyboard interactions that occur throughout a user’s entire visit to your page.
Think of it this way: a user lands on your site and clicks your “Book a Consultation” button. If there is a noticeable delay—even a fraction of a second—before the page visually updates to show that the button was clicked, that is poor INP. Google considers an INP of under 200 milliseconds to be good. Anything above that, and your search rankings could suffer.
Why Sydney SMBs Must Care About INP
Australian consumers have notoriously short attention spans. If your WordPress site feels sluggish, users will bounce back to the search results and click on your competitor. This high bounce rate signals to Google that your site isn’t providing a good user experience, dragging your organic rankings down with it.
Furthermore, slow responsiveness directly hurts your conversion rates. If you are investing hard-earned dollars into Google Ads, driving traffic to a site with poor INP is like throwing money down the Parramatta River. You’ve paid for the click, but the frustrating user experience prevents the conversion.
How to Measure Your WordPress Site’s INP
Before you can fix the problem, you need to know where you stand. Here are three free tools to diagnose your INP:
- Google PageSpeed Insights: Enter your URL to see your real-world user data (Chrome User Experience Report) and laboratory diagnostics.
- Chrome DevTools: Use the “Performance” panel to record interactions and identify long-running tasks that block the main thread.
- Search Console: Check the “Core Web Vitals” report to see which URLs on your site are failing the INP threshold.
Step-by-Step Guide to Optimizing INP on WordPress
Optimizing for INP on WordPress requires addressing the main culprit: excessive JavaScript execution. When your browser is busy running heavy scripts, it cannot respond to user inputs. Here is how to fix it.
1. Audit and Reduce Heavy Plugins
WordPress’s greatest strength—its plugin ecosystem—is also its biggest weakness when it comes to speed. Many plugins inject bloated JavaScript files into every page of your site, whether they are needed or not. Go through your plugin list and deactivate anything that isn’t absolutely essential. For features you do need, look for lightweight, modern alternatives.
2. Delay and Defer Non-Essential JavaScript
Not all scripts need to load immediately. Third-party tracking scripts (like the Meta Pixel, Google Analytics, or heatmaps) should be deferred or delayed until after the user has interacted with the page. You can use optimization plugins like WP Rocket, FlyingPress, or Perfmatters to easily defer JavaScript with a single click.
3. Optimize Your CSS and Layout Shifts
If an interaction causes a massive layout shift or forces the browser to recalculate styles across the entire page, it will delay the “Next Paint”. Ensure your theme is built using clean, modern CSS. Avoid complex CSS animations that trigger layout changes, and instead use transitions that rely on transform and opacity properties.
4. Upgrade Your Hosting to a Sydney-Based Server
Physical distance matters. If your business serves customers in Sydney, but your website is hosted on a cheap server in Oregon or London, every data packet has to travel across the globe. This introduces latency that directly degrades your Core Web Vitals. Partnering with a specialized WordPress agency like WP Pro ensures your site is hosted on ultra-fast, local Australian servers with edge caching enabled.
Need Help Speeding Up Your WordPress Website?
Optimizing for Core Web Vitals like INP can quickly become highly technical. It requires deep knowledge of how browsers render web pages, how JavaScript executes, and how WordPress databases operate.
At WP Pro, we live and breathe WordPress performance. We don’t just patch up problems with plugins; we perform deep-level optimization, database cleanups, and custom coding to ensure your Sydney business ranks at the top of Google and converts visitors into loyal customers.
Don’t let a sluggish website cost you customers and organic traffic. Get in touch with the WP Pro team today for a comprehensive speed and SEO audit of your WordPress website.


