BigCommerce Speed Optimization Agency for Growing Stores
Expert BigCommerce Speed Optimization Services
Our BigCommerce speed optimization service makes every product and category page load fast, improving page speed and Core Web Vitals so shoppers stay, your store ranks better in Google, and more visits turn into sales.
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"The CEO (Matt) looked over my project on a Saturday morning when most companies would be closed. … Very refreshing to interact with a company that paid close attention to the details of my project."
Josh W
Trustpilot review
"The CEO Matt Suffoletto is very responsive and thorough. … He got my core web vitals to pass googles test which helped increase my website speed! Highly recommend"
Julia McCurley
Trustpilot review
"Matt fixed the load speed on our Wix site and got it done faster than I expected. He was quick to start and clear about what he was changing, and the pages load noticeably faster now."
Danny Klos
Trustpilot review
"Matt and his team stepped in, and our website has made a complete 180 in terms of speed. Matt has been an absolute pleasure to work with and has always responded to messages in a timely manner."
Todd Goranflo
Trustpilot review
"Matt is as quick and effective as it gets. … Matt and his team are the real deal. They fixed my website’s speed, which was literally on the floor…"
Jose Cardenas
Trustpilot review
"Working with Matt was swift, easy and a great success in improving our website's page speed. Very prompt and detailed with answers."
Kristi
Trustpilot review
"Excellent website optimization service! My site's speed and performance improved significantly, making it much faster and easier to use."
cristiano ghiazza
Trustpilot review
"Great initial conversation and clear plan put together. Very pleased."
Diversified Insurance Brokers
Trustpilot review
"Exceptional service, well beyond my expectations, friendly kind professional, affectionate, effective and fast"
ZINN
Trustpilot review
"My website is a divi website that has conflicts that seemed to never end. It took them a little bit but they worked through it. Definitely recommend these guys."
Customer
Trustpilot review
Trusted by over 1,500 leading brands
Pricing
Get Your Site Optimized in as Little as 3 Days
From $500. Pick the plan that fits your site and check out in minutes. No hidden fees, no lock-in contracts.
- 1Choose your planAdd Core Web Vitals or Rush if you need them
- 2Check out securelyPay once and share your site details
- Get your site optimizedIn as little as 3 days
Starter
Simple WordPress or Shopify sites.
- WordPress or Shopify
- Theme/template, no custom code
- Minimal plugins, apps & scripts
- Under 5k visits/mo
- Small site (under 50 pages/products)
Only
$500
One-time fee
10–14 days
Intermediate
Growing sites with custom work.
- Any major platform
- Custom code or an edited theme
- 5k+ visits/mo
- Moderate third-party scripts
- Up to 5,000 pages/products
Only
$1,250
One-time fee
10–14 days
Pro
Large, complex, or high-traffic sites.
- 5,000+ pages/products
- Heavy custom code or headless
- Lots of tags, apps & scripts
- Shopify Plus, Magento & more
- 100k+ visits/mo
Only
$2,500
One-time fee
10–14 days
Secure one-time payment via Whop. We start within 1 business day.
Our Expertise
Work With a BigCommerce Speed Optimization Expert
Most speed apps promise a one-click fix and add another script to your store. We don't. Every engagement is run by a BigCommerce speed optimization expert who profiles your store at the code level: every installed app and its scripts, Stencil theme render cost, and image and pixel weight. Then we cut what is not earning its place and tune the rest.
Growing stores come to us as their BigCommerce speed optimization agency because we show our work. You get a ranked app-impact report, before and after Core Web Vitals data, and documentation of every change, not a black box.
1,500+
Optimization projects
100%
Core Web Vitals pass rate
90+
PageSpeed scores
Matt Suffoletto
Founder & CEO
BigCommerce Speed Optimization Expert
Who This Is For
Is This Right for You?
Product Stores
Product-based stores need fast collection pages, image-heavy product pages, and instant filtering.
B2B & Wholesale
B2B stores with customer-specific pricing and complex catalogs need fast search and account pages.
Multi-Storefront
Multi-storefront setups need each storefront independently optimized for its target audience.
Headless Commerce
Headless BigCommerce builds need optimized API calls, efficient data fetching, and fast client-side rendering.
Common Problems
What's Slowing You Down?
Stencil Theme Bloat
BigCommerce's Stencil themes accumulate customizations over time. Unused Handlebars partials, excessive front-matter data fetching, and render-blocking CSS/JS compound into slow page loads.
App Script Overload
Every installed BigCommerce app adds JavaScript, CSS, and API calls to your store. Reviews, upsells, chat widgets, and analytics tools compound into 2–4 seconds of extra load time.
Slow Product & Category Pages
Large product catalogs with high-res images, variant selectors, and faceted search create heavy pages. Unoptimized product images alone can account for 60%+ of page weight.
Checkout & Cart Abandonment
Payment gateway scripts, shipping calculators, and third-party checkout integrations make the most revenue-critical pages the slowest, driving up cart abandonment rates.
Our Solutions
How We Speed Up Your BigCommerce Store
We work on a copy of your theme, so your live store is never at risk. We audit and trim apps, refactor Stencil templates, optimize image and script delivery, and fix Core Web Vitals on your product and category pages. Here is what that covers:
Stencil Theme Profiling
We audit every Handlebars template for rendering efficiency, front-matter data over-fetching, unused partials, and CSS/JS bloat. You receive a ranked impact report with specific optimization recommendations and before/after render times.
App Impact Analysis & Cleanup
We profile every installed app individually for JavaScript weight, API call overhead, and render-blocking behavior. You get a ranked report showing exactly which apps cost the most speed, with vetted faster alternatives and migration steps.
Image & Asset Optimization
We implement responsive srcsets, modern formats (WebP/AVIF), proper lazy loading, and Akamai CDN optimization for all product images, hero banners, and category thumbnails, without sacrificing visual quality.
Checkout Performance Engineering
We defer non-critical payment gateway scripts, optimize shipping rate calculations, reduce DOM complexity on checkout, and ensure the most revenue-critical pages load in under 2 seconds.
Core Web Vitals Engineering
We target LCP, INP, and CLS individually, fixing layout shifts from product galleries, optimizing interaction handlers on collection pages, and monitoring real-user CrUX data until all metrics pass Google's 28-day rolling window.
Performance Safeguarding
After deployment, we provide 30 days of monitoring to catch regressions from app updates, theme changes, or BigCommerce platform updates. You receive a Speed Budget Document with max JS size, image targets, and app limits.
The Data
What Happens When You Improve BigCommerce Site Speed
On an ecommerce store, speed is conversion rate. When you improve BigCommerce site speed, faster product and category pages keep shoppers moving toward checkout, lift organic traffic from passing Core Web Vitals, and lower your cost per click through a better Quality Score.
Proof
Our Results
Real stores, real speed improvements, real revenue impact.
Liz Mathe
Stencil theme optimization with improved PageSpeed and Core Web Vitals across all product pages.
View Case Study
Platterful
80% speed improvement, 20% conversion lift. Mobile score from 50s to 90+.
View Case Study
Pure Parima
38% LCP improvement, 100% CLS fix. Passed all Core Web Vitals.
View Case StudyROI Calculator
How Much Revenue Is Your Slow Site Costing You?
Enter your URL, in 30 seconds, you'll see exactly how much revenue slow speed is costing you.
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10,000+ sites analyzed · No login required · See your losses in 30 seconds
Our Process
How It Works
Staging & Full Audit
We run a comprehensive performance audit, PageSpeed, Core Web Vitals, Stencil template profiling, app script analysis, and real-device testing. Your live store is never touched during this phase.
App & Template Impact Ranking
Every installed app and Stencil template is profiled individually for rendering time, JavaScript footprint, and API overhead. You receive a ranked report showing exactly which components cost the most speed.
Optimization Sprint
1 to 2 WeeksOver 1–2 weeks, we implement all fixes: Stencil template optimization, app script deferral, Critical CSS generation, image optimization, and checkout tuning. Zero downtime to your live store.
Core Web Vitals Fine-Tuning
2 to 4 WeeksWe monitor real-user field data (CrUX) over 2–4 weeks, making iterative adjustments until LCP, INP, and CLS consistently pass in Google's 28-day rolling window, lab scores.
Deployment & Documentation
Once validated, all changes go live. You receive complete documentation of every change made, a speed budget for future development, and a before/after performance report.
Deliverables
What You'll Receive
Every engagement includes comprehensive documentation and reporting.
Before/After Speed Report
PageSpeed and Core Web Vitals scores before and after optimization, with waterfall comparisons.
App Impact Report
Every installed app ranked by JavaScript weight, API calls, and render-blocking behavior with specific load-time cost.
App Replacement Playbook
For every slow app identified, a vetted faster alternative with step-by-step migration instructions.
Stencil Theme Audit
Detailed analysis of Handlebars templates, front-matter configuration, and CSS/JS delivery with optimization results.
Competitor Speed Benchmark
How your store stacks up against 3–5 direct competitors on LCP, TTFB, and Speed Index.
Core Web Vitals Forecast
Projecting exactly which metrics (LCP, CLS, INP) will move into the 'Green' zone, with expected timelines.
Image Optimization Report
Analysis of product image delivery, format optimization, and CDN configuration with before/after file sizes.
Revenue Impact Projection
Custom report mapping your speed improvements to projected revenue gains using your actual traffic and conversion data.
Google Ads / CPC Savings Report
Analysis of how improved page speed lowers your Quality Score penalty and reduces cost-per-click for paid campaigns.
30-Day Post-Launch Monitoring
30 days of monitoring after deployment to ensure gains hold after app updates, theme changes, or platform updates.
SEO Impact Forecast
Projected ranking improvements based on Core Web Vitals fixes, with estimated organic traffic gains from your Search Console data.
Speed Budget Document
A living document setting performance budgets for future development, max JS size, image targets, app limits.
Executive Summary (1-Pager)
A non-technical summary for stakeholders showing what was done, what improved, and what it means in dollars.
Checkout Performance Audit
Page-by-page analysis of cart, checkout, and account pages with specific optimization recommendations.
Third-Party Script Analysis
Every external script identified and categorized with defer, async, or remove recommendations.
What We Optimize
Optimize BigCommerce Site Speed at Every Layer
On BigCommerce the server is managed, so the biggest wins come from the theme, the apps, and how assets are delivered. We optimize BigCommerce site speed across all three.
Stencil Theme Optimization
Refactor Stencil templates, Handlebars partials, and front-matter to cut render time and reduce TTFB on product and category pages.
Script & Asset Delivery
Audit every third-party script and pixel, defer non-critical JavaScript, inline critical CSS, and remove render-blocking assets so the page paints sooner.
App Impact Profiling
Profile each installed BigCommerce app for JavaScript weight, API overhead, and main-thread cost. Replace or remove the heaviest offenders without losing functionality.
Akamai CDN & Caching
Tune BigCommerce's built-in Akamai CDN and cache headers so static assets and pages are delivered from the edge with the right TTLs.
Headless & GraphQL Performance
Optimize GraphQL and REST calls for headless BigCommerce builds on Catalyst, Next.js, or custom React, with efficient data fetching and edge rendering.
BigCommerce Mobile Speed
Fix BigCommerce mobile speed at the page level: responsive image delivery, lighter mobile bundles, and BigCommerce LCP improvements on product templates.
Deep Dives
BigCommerce Speed Guides
Explore our wider library of speed and Core Web Vitals guides below.
FAQ
Frequently Asked Questions
Testimonials
What BigCommerce Clients Say
"Platterful saw major improvements in site speed after working with Matt and the PageSpeed Matters team. They took our mobile score from the 50s to over 90 while keeping SEO intact. They were responsive, helpful, and continued to support us even after the project ended. Highly recommend."
Mobile score: 50s → 90+ • Conversions: +20%
Lowell
Co-Founder, Platterful
"Outstanding results! Matt and his team delivered measurable outcomes for our company, something larger firms promised but never followed through on. Truly impressive work!"
Passed Core Web Vitals on key pages
Cody Stehlik
NSAR
"Matt was thoughtful, professional and competent. His communication skills are excellent and he is a pleasure to work with. The project was a success and we highly recommend Matt and the PageSpeed Matters team."
Mobile LCP 8.0s → 3.0s • Mobile Score 59 → 94
Monthly Moxie
Subscription Box Store
Ready to Get Started?
Get your BigCommerce store optimized in as little as 3 days. From $500.
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