Products & SaaSProduction
EcomLabs Corporate Website
Bilingual corporate website for EcomLabs, built on Next.js. It presents the studio's Shopify services, ecommerce engineering, CRO, custom apps and integrations.
- Next.js
- Bilingual
- SEO
- Accessibility
Performance & data
Performance optimization
Performance Optimization
We make Shopify stores faster where it counts — Core Web Vitals, render path and payload — by cleaning up Liquid, cutting JavaScript and setting budgets that keep speed from slipping back.
Overview
Speed as an engineering problem
A slow store costs conversions and rankings, but chasing a single score rarely fixes it. We profile the theme, find what's actually holding it back, and address the causes — heavy JavaScript, unoptimized images, render-blocking assets and apps that cost more than they're worth.
We measure against Core Web Vitals — LCP, CLS and INP — using field and lab data, not one lucky lab run. And we set performance budgets so the store stays fast after we've handed it back.
- Measured, not guessed
- We diagnose with real field and lab data, so we fix what's actually slowing the store rather than chasing a number.
- Real Core Web Vitals gains
- We target LCP, CLS and INP directly, the metrics that affect both users and search visibility.
- Budgets that hold
- We set performance budgets so new features and apps can't quietly undo the work over time.
A budget is a number agreed before the work, not a score explained after it.
LCPLargest Contentful Paint≤ 2.5s
INPInteraction to Next Paint≤ 200ms
CLSCumulative Layout Shift≤ 0.1
TBTTotal Blocking Time≤ 200ms
Thresholds are Google's published Core Web Vitals targets. The line is the budget; the bar is illustrative, not a measurement of your store.
What's included
What the engagement covers
- Core Web Vitals audit (LCP, CLS, INP)
- Theme profiling & render-path analysis
- Liquid cleanup & reduced JavaScript
- Image optimization & responsive delivery
- Third-party app & script impact review
- Performance budgets & monitoring
Technologies
- Shopify
- Liquid
- Core Web Vitals
- Lighthouse
- WebPageTest
- JavaScript
Use cases
Where this helps most
Slow product pages
PDPs with poor LCP from heavy images and scripts, reworked to load the main content fast.
App bloat cleanup
A store weighed down by scripts from apps that are no longer needed, audited and trimmed back.
Post-launch regression
A theme that was fast at launch and slowed over time, profiled and brought back within budget.
Process
How we deliver
Profile
We measure the store with field and lab data and profile the theme to find what's driving LCP, CLS and INP.
Prioritize
We rank fixes by impact and effort, separating quick wins from deeper theme or app work.
Optimize
We clean up Liquid, cut and defer JavaScript, optimize images and reduce the cost of third-party scripts.
Budget & monitor
We set performance budgets and monitoring so regressions get caught before they reach production.
FAQ
Performance Optimization
Can you get me a perfect Lighthouse score?
We optimize for real-world speed and Core Web Vitals, which is what affects users and search. A single lab score can look perfect and still hide a slow experience for real visitors, so we don't chase it in isolation.
Do I have to remove my apps?
Not necessarily. We measure what each app costs in performance and flag ones that aren't worth their weight. The decision is yours; we give you the data to make it.
Will performance work slow down after you leave?
That's what performance budgets are for. We set thresholds and monitoring so new features or apps that would push the store over budget get caught early rather than degrading it silently.
Proof
Where we have done this
Real projects that used this capability. Every one shipped.
Shopify AppsDevelopment
EcomLabs CRO Inspector
Shopify app in development that inspects storefronts across Home, PLP, PDP and Cart for CRO, UX, accessibility, SEO and performance.
- Shopify
- CRO
- UX
- SEO
Shopify AppsDevelopment
Bulk Image Edit & SEO
Shopify app in development for bulk image editing and SEO, with resize, compression, format conversion and alt-text management.
- Shopify
- Images
- SEO
- Optimization
Go deeper
Written from the work
- Store speed is usually an architecture problemCompressing images is where most speed work stops. What actually decides a product page is the scripts, sections and queries somebody chose to add.
- Shopify theme architecture that survives a yearA theme does not rot from badly written Liquid. It rots from a handful of structural decisions taken in week two, when nobody is thinking about month eleven.
Let's build
Ready to start with performance optimization?
Tell us about your store and your goals. We'll come back with a clear, honest plan and a transparent quote.