Stop Wasting Ad Spend on
Unresponsive Pages.
Research consistently shows that even small interaction delays can cut conversions significantly.² If your buttons feel frozen on tap, visitors leave before converting. We fix Interaction to Next Paint at the code level.
Protect your ROAS and SEO rankings. Fixed price. Before/after proof. All major platforms.
Your Ads Work. Your Pages Don't Respond.
You're paying for every click. But when users tap a button and nothing happens for 400ms, they assume it's broken and bounce — taking your ad dollars with them.
Studies consistently link each second of interaction delay to measurable conversion drops — commonly cited around 7%. ²
Industry surveys show the majority of businesses experience direct revenue loss from poor site responsiveness. ³
INP is one of three Core Web Vitals Google uses as a ranking factor. Failing it means losing organic visibility.
Google evaluates CWV almost exclusively on mobile. Touch interactions are inherently slower than desktop clicks.
Is This for You?
This is for you if…
- Your PageSpeed report shows red or orange on INP
- You're running paid ads and suspect bounce rates are killing ROI
- Your Google Search Console shows "Poor" or "Needs Improvement" on CWV
- You've tried caching plugins and CDNs but INP won't budge
- Your site feels sluggish on mobile — buttons lag, forms hesitate
- You need documented proof of improvement for stakeholders
This probably isn't for you if…
- Your INP is already green (≤ 200ms) — you don't need us
- You want a full site redesign, not performance optimization
- Your site is brand new with no real traffic yet
- You're looking for general marketing or SEO content work
- You need hosting migration — we fix code, not infrastructure
What Is “Interaction to Next Paint”?
INP measures perceived speed — how fast your site visually responds when users click, tap, or type. Your page might load in under 2 seconds (good LCP), but if it feels frozen when a user clicks “Add to Cart” or submits a form, that's a failing INP. Users don't wait.
INP replaced FID (First Input Delay) as a Core Web Vital in March 2024. Google now evaluates responsiveness across every interaction during the full page session — not just the first click.
Why INP Fails (And What We Fix)
We specialize in breaking up Long Tasks — any JavaScript execution exceeding 50ms that blocks the main thread. Using production-grade techniques like scheduler.yield() and requestIdleCallback, we defer non-critical code until after user interactions are handled.
Long Tasks > 50ms
Heavy scripts block the main thread during interactions. We break them into sub-50ms chunks using scheduler.yield() and task scheduling.
Third-party script bloat
Chat widgets, pixels, and GTM tags that fire during the first 500ms of interaction. We audit, defer, and remove what's killing responsiveness.
Inefficient event handlers
Click and tap handlers that trigger long processing or excessive DOM mutations. We optimize and debounce expensive operations.
Hydration bottlenecks
React, Next.js, and Vue hydration delays interactivity. We implement selective hydration, lazy loading, and Islands patterns.
Theme & plugin bloat
WordPress page builders and Shopify apps inject blocking JavaScript on every interaction. We defer or replace the worst offenders.
Layout thrashing
Forced synchronous layout during interactions causes expensive reflows. We batch DOM reads/writes and minimize rendering pressure.
We've Seen This Movie Before
These are the root causes we find on nearly every engagement, broken down by platform.
Shopify
- →Judgeme / Loox / Stamped review widgets firing on every interaction
- →Tidio / Gorgias / Zendesk chat loading synchronously
- →Recharge / Bold subscription scripts blocking cart
- →Klaviyo / Attentive popups triggering layout thrash
- →Theme app-blocks with undeferred inline JS
WordPress
- →Elementor / Divi / WPBakery frontend.min.js blocking main thread
- →WooCommerce cart fragments AJAX on every page
- →Contact Form 7 / Gravity Forms loading JS site-wide
- →Slider Revolution / LayerSlider animation loops
- →20+ plugin enqueue conflicts creating > 200ms Long Tasks
Next.js / Headless
- →Full-page hydration blocking interaction until JS bundle executes
- →useEffect chains creating cascading re-renders on mount
- →Client-side state management (Redux/Zustand) triggering unnecessary paints
- →Unoptimized dynamic imports delaying route interaction
- →Analytics/tracking scripts not deferred past hydration
Also optimizing:
Real Results. INP-Specific Metrics.
DTC Brand — Supplements Store
5 review/chat/upsell apps creating 380ms+ Long Tasks on every product page interaction. Cart button felt frozen on mobile.
Deferred Judgeme reviews, lazy-loaded Gorgias chat, replaced inline upsell script with requestIdleCallback pattern. Completed in 6 days.
Regional Law Firm — Lead Gen Site
Elementor Pro + 22 plugins creating 600ms+ interaction delay. Contact form took 800ms to respond to first keystroke on mobile.
Deferred 14 plugin scripts, replaced Elementor motion effects with CSS animations, moved form JS to interaction-triggered loading. Completed in 8 days.
PageSpeed Validation
Lab scores from our own production builds.
Check your site's performance pagespeed.web.dev
Clear Pricing. No Surprises.
Fixed prices. No discovery calls required to get started. Buy now and we reach out within 24 hours.
3-day delivery. Root cause map + prioritized fix plan.
Best first step if you want to understand what's broken before committing to a fix.
- Full INP breakdown & root cause map
- Long Task identification (> 50ms)
- Third-party script impact report
- Event handler & rendering audit
- Prioritized implementation plan
- Delivered in 3 business days
Up to 5 templates · Target ≤ 200ms · 7–10 days.
Best for small sites, service businesses, and single-funnel stores (home, product, cart, checkout, blog).
- Everything in Audit
- Long Task elimination (scheduler.yield)
- Event handler & rendering optimization
- Third-party script remediation (up to 10 tags/apps)
- LCP & CLS improvements included
- Mobile-first priority
- Before/after validation + full deliverables package
- Delivered in 7–10 business days
Includes up to 5 unique templates + 10 third-party tags/apps. Additional templates $250 each or upgrade to Growth.
Up to 12 templates · Target ≤ 200ms · 10–14 days.
Best for ecommerce stores, plugin-heavy WordPress, and multi-template sites with complex third-party stacks.
- Everything in Starter
- Up to 12 unique templates/layouts
- Up to 20 third-party tags/apps remediated
- Deep hydration & bundle optimization
- Platform-specific root cause fixes
- Before/after validation + full deliverables package
- Delivered in 10–14 business days
Includes up to 12 unique templates + 20 third-party tags/apps. Additional templates $250 each.
Not sure which tier fits? Book a free 30-min discovery call
What Happens After You Order
Questionnaire
At checkout you complete a detailed form — platform, goals, known issues, and access instructions.
We Reach Out
Within 24 hours we confirm scope and request secure access (WP login, Shopify collaborator, staging, etc).
We Fix It
We break long tasks, optimize event handlers, defer scripts, and eliminate layout thrashing at the code level.
We Validate
You get documented before/after PageSpeed evidence and a summary of every optimization applied.
What You Actually Get
Code changes via PR or direct commit
Every optimization is committed with clear descriptions. You own the code.
Before/after RUM + Lab data
Real User Metrics and PageSpeed Insights captures proving measurable improvement.
Long Task inventory & script deferral map
A complete list of every blocking task found, what caused it, and how we fixed it.
Exact files changed + optimization summary
A written summary of every file modified and the technique applied.
Rollback plan
Every change is reversible. We document how to revert if you ever need to.
Third-party script audit report
Impact ranking of every third-party script on your site with defer/remove recommendations.
Measurable Improvement Guarantee
If we can't measurably improve your INP score, we keep working until we do — or we refund the audit fee. Every engagement includes documented before/after evidence so there's no ambiguity about results.
We target ≤ 200ms INP (Google's “Good” threshold). In rare cases where platform limitations prevent reaching 200ms, we document exactly what was achieved and recommend next steps.
What Clients Say
“Our Shopify conversion rate jumped 18% the first month after the fix. Page load dropped from 8+ seconds to under 2, and the site finally feels instant on mobile.”
“Two other agencies told us our WordPress site 'couldn't be faster' because of our plugins. Agenxus cut load time by 75% without removing a single one. They optimized the actual code.”
“We were spending $40K/mo on Google Ads with a 2.1% conversion rate. After the INP fix, we hit 2.8% without changing a single ad. That's an extra $14K/mo in revenue from the same spend.”
“The audit report alone was worth the money — we could finally see exactly what was slowing us down. But the fact they fixed everything in under a week was the real value. Rankings improved within two weeks.”
“Our customer satisfaction scores went up after the speed fix. Support tickets about 'the site being broken' dropped to near zero. Turns out it wasn't broken — it was just slow to respond.”
“Our checkout was leaking conversions and we couldn't figure out why — PageSpeed looked fine. Agenxus found three hydration bottlenecks we never would have caught ourselves. INP dropped from 580ms to 160ms in a week.”
Common Questions
INP measures perceived responsiveness — how quickly your site visually responds when users click, tap, or type. It replaced FID (First Input Delay) as a Core Web Vital in March 2024. Unlike FID which only measured the first interaction, INP evaluates every interaction throughout the page session. A good INP is 200ms or less.
When users click a button and nothing happens for 300-500ms, many assume the site is broken and leave. If you're running paid ads, you're paying for that click but losing the conversion. Research consistently links interaction delays to measurable conversion drops — the longer the delay, the more revenue leaks.
Load speed (LCP) and interaction speed (INP) are different metrics. Your page can load in under 2 seconds but still feel frozen when users interact. JavaScript blocking the main thread during interactions causes this — even if it loaded fine initially. That's the 'frozen button' problem we fix.
We optimize INP across Shopify, WordPress, Webflow, Wix, Squarespace, Next.js/React, Nuxt/Vue, Shopify Hydrogen, and custom stacks. Each platform has specific bottlenecks and we know the root causes on each.
A Long Task is any JavaScript execution exceeding 50ms that blocks the browser's main thread. During a Long Task, the browser can't respond to user interactions. We use techniques like scheduler.yield() and requestIdleCallback to break long tasks into sub-50ms chunks.
Code changes via PR or direct commit, before/after RUM and lab data, a Long Task inventory with script deferral map, exact files changed with optimization summary, a third-party script audit report, and a rollback plan. Everything is documented.
At checkout you complete a questionnaire about your platform, issues, and goals. Within 24 hours we confirm scope and request secure access. We implement optimizations and deliver documented before/after evidence.
Yes. We guarantee measurable INP improvement. If we can't improve your score, we keep working until we do — or refund the audit fee. We target ≤ 200ms. In rare cases where platform limitations prevent reaching 200ms, we document what was achieved and recommend next steps.
Sources
- Chrome UX Report (CrUX) & HTTP Archive, 2024–2025. INP origin-level pass rates across mobile origins.
- Google / Deloitte, “Milliseconds Make Millions” (2020). Correlation between site speed improvements and conversion/revenue lift across retail and travel.
- Akamai, “Online Retail Performance” report series (2017–2023). Surveys on business impact of site responsiveness.
- web.dev INP documentation: web.dev/articles/inp