Shopify Performance Optimization

A slow Shopify store costs you in three places at once: search rankings, conversion rate, and customer trust. Shero audits and optimizes Shopify stores for Core Web Vitals, mobile performance, and checkout speed using a structured process that starts with data and ends with measurable improvements.

Book a Discovery Call Our Work

16+

Years in business

500+

Projects Delivered

65+

Team Members

98%

Client Retention

48%

Of 1,000 Shopify stores pass Core Web Vitals on mobile

We tested 1,000 live Shopify stores and fewer than half passed all three Core Web Vitals on mobile. Beauty and fashion stores failed most often because of heavy images and complex themes.

#1

LCP is the metric we fix first

In the same 1,000-store test, LCP (how fast the main image loads) moved the overall speed score more than INP or layout shift did. So our speed audit starts with the hero image and the scripts that load before it.

60%+

Outdoor and sporting goods stores pass most often

Outdoor and sporting goods stores did best in our 1,000-store test, with more than 60% passing all three Core Web Vitals on mobile. We compare your store with others in its category, and our speed optimization guide lists the fixes we make most.

3x

Faster load, Swag Golf

We rebuilt the theme around their limited-release drops and tripled load speed. Mobile conversion went up 28%.

"Working with Shero Commerce for the past three years has been a game-changer for our B2B ecommerce business. Their expertise in website support and eCommerce strategy has significantly improved our online presence and optimized our B2B operations."

Joe Prebich, VP of Marketing, Benchmade Knife Company

Your store might be fast enough in the office

Most Shopify performance problems are invisible until you measure them on a real mobile device on a real connection. The issue is usually not your theme or your hosting. It is the combination of apps installed over time, images that were never compressed, tracking scripts that load before the page content, and a checkout flow that was set up at launch and never reviewed. Each of these alone is a minor problem. Together they cost you rankings and conversions every day.

Core Web Vitals Audit
PageSpeed Optimization
App Bloat Cleanup
Image Compression
Tracking Script Consolidation
Mobile Performance
Checkout Speed
Ongoing Monitoring

Compared on	Shero performance team	A speed optimization app	A Shopify theme freelancer	Your in-house developer
Where your store stands against others	Our study: 48% of 1,000 Shopify stores pass mobile Core Web Vitals	Shows a score inside the app, often different from field data	Checks PageSpeed lab scores one page at a time	Can pull field data if someone asks for it
Keeping custom features while getting faster	Swag Golf: 3x faster load with 5 custom features kept	Defers scripts, which can break features that load late	May strip features to hit a score	Protects features, may not know newer theme options
Speed holding after launch	STX and Sarris Candies: all green Core Web Vitals since launch	Helps while installed; gains can drop once removed	Leaves after the fix while new apps slow it again	Owns it long term, often with no speed budget
Heavy custom logic on every page	Regal Cinemas: pages 40% faster than their old Magento site	Can't change how custom code is written	Can rewrite code if hired for enough hours	Wrote much of the code, so is slow to cut it
How you pay	An accurate estimate after paid discovery. Support on a monthly retainer.	Monthly app subscription	Hourly, quoted per fix	Salary, shared with other projects

Shero performance team

Where your store stands against others Our study: 48% of 1,000 Shopify stores pass mobile Core Web Vitals

Keeping custom features while getting faster Swag Golf: 3x faster load with 5 custom features kept

Speed holding after launch STX and Sarris Candies: all green Core Web Vitals since launch

Heavy custom logic on every page Regal Cinemas: pages 40% faster than their old Magento site

How you pay An accurate estimate after paid discovery. Support on a monthly retainer.

Compared with

A speed optimization app

Where your store stands against others Shows a score inside the app, often different from field data

Keeping custom features while getting faster Defers scripts, which can break features that load late

Speed holding after launch Helps while installed; gains can drop once removed

Heavy custom logic on every page Can't change how custom code is written

How you pay Monthly app subscription

A Shopify theme freelancer

Where your store stands against others Checks PageSpeed lab scores one page at a time

Keeping custom features while getting faster May strip features to hit a score

Speed holding after launch Leaves after the fix while new apps slow it again

Heavy custom logic on every page Can rewrite code if hired for enough hours

How you pay Hourly, quoted per fix

Your in-house developer

Where your store stands against others Can pull field data if someone asks for it

Keeping custom features while getting faster Protects features, may not know newer theme options

Speed holding after launch Owns it long term, often with no speed budget

Heavy custom logic on every page Wrote much of the code, so is slow to cut it

How you pay Salary, shared with other projects

01

Ongoing monitoring as the store grows

Performance degrades over time as apps are added, themes are updated, and catalog size grows. We offer ongoing performance monitoring as part of a Shopify support retainer so issues are caught before they affect rankings or conversions.

02

Mobile performance treated as the primary target

Most eCommerce traffic comes from mobile devices, but most optimization audits start from desktop scores. We optimize specifically for mobile: deferred scripts, compressed images, fewer checkout fields, and Core Web Vitals compliance on smaller screens.

03

Images and media optimized at scale

Images account for a large share of page weight on most stores. We compress and reformat images to WebP or AVIF, resize oversized assets, and implement lazy loading so pages load fast without sacrificing visual quality.

04

Tracking cleaned up through Google Tag Manager

Google Tag Manager and third-party tracking scripts are among the most common sources of page speed problems. Shero audits every tag before the performance fix list is produced. Analytics configuration is reviewed alongside performance work because accurate data and fast pages are both required for good decisions.

05

App bloat is the first thing we fix

Most slow Shopify stores have the same problem: too many apps injecting scripts that were never removed. We audit every installed app, identify which ones are redundant or unused, and clean up the load order. This alone produces measurable speed gains on most stores.

06

Audit before we touch anything

Every performance engagement starts with a full audit of apps, theme code, media, and third-party scripts. Site speed audit is available as a standalone deliverable for brands that want a prioritised fix list before committing to an ongoing engagement.

Golf equipment

3xfaster storefront load speed vs previous theme

+28%improvement in mobile conversion rate post-redesign

Swag GolfShopify

Read the case study

Entertainment

+40%faster page load times vs legacy Magento

2separate Shopify stores built for CBO and RCC platforms

Regal CinemasShopify

Read the case study

Sporting goods

All Greencore Web Vitals since launch

+200%revenue growth since launch

STXShopify

Read the case study

Premium milled golf putters & golf accessories

Swag Golf

Swag Golf is known for its limited-edition, bold golf gear and lifestyle products with a devoted following. Looking to align their online store with their unapologetic brand identity, the brand partnered with Shero to overhaul their Shopify theme, develop a dedicated evergreen product strategy, and drive stronger conversions. The redesign led to a +28% increase in mobile conversion rate and tripled load speed.

Swag Golf

Luxury wines packaged in cans

Archer Roose

Archer Roose is a wine company known for producing high-quality, sustainably sourced wines in eco-friendly formats like cans and kegs. Their commitment to small, organic, and biodynamic vineyards has helped them stand out in a competitive market. They saw an increase of +18% in email marketing ROAS and 35% improvement in mobile browsing session duration.

Archer Roose

Well-known American knife manufacturer

Benchmade

For more than three decades, Benchmade has been known for producing high-quality knives for everyday carry, hunting, rescue, and outdoor use. Launched on Magento Commerce Cloud in 2018, the brand partnered with Shero to expand online amid rising outdoor consumer demand. Since then, they have seen: +100% revenue growth, +68% transaction growth after relaunch, and a +20% increase in average order value.

Benchmade

Musical instruments and audio equipment

Alto Music

Alto Music, a longtime music retailer with loyal customers, collaborated with Shero to switch from Magento 2 to Shopify. They successfully maintained their popular Altobucks loyalty program while moving to a more user-friendly and cost-efficient platform. The transition ensured all loyalty benefits remained intact, and they achieved a 40% reduction in ongoing maintenance expenses.

Alto Music

Faster pages convert better

Speed and checkout fixes often lift conversion before any test starts, so we begin there.

Speed
App scripts, images and theme code fixed to pass Core Web Vitals.
Checkout
Checkout steps, payment options and errors reviewed.
Product pages
Copy, images and reviews placed where buyers look.
Analytics
GA4 and events checked so the results are real.

Most performance audits uncover 3 to 5 high-impact fixes in the first week.

Let's look at yours

Get a Performance Audit

01

Baseline
We measure key page types with PageSpeed Insights and Search Console field data, plus a real phone on a real connection.
02

App inventory
Every app and tag is listed with the weight and blocking time it adds to each page.
03

Cuts
Unused apps come out, duplicate tags merge in Tag Manager and scripts load in an order that stops blocking the page.
04

Theme work
On a staging copy we fix image sizes and lazy loading, and remove unused CSS and JavaScript.
05

Verify
We compare Core Web Vitals field data before and after, then check it monthly so a new app does not undo the work.

Frequently asked questions.

Can't find what you're looking for? Reach out to our team.

01

How do I know if my Shopify store has a performance problem?

02

What causes Shopify stores to slow down over time?

03

How much impact does site speed have on conversion rate?

04

Do you optimize Shopify stores on standard plans or only Plus?

05

What does a Shopify performance audit cover?

06

How long does a performance optimization engagement take?

What our clients say.

We design experiences that make a difference. See what our clients have to say about working with us.

Benchmade Knife Co.

"I wanted to take a moment to thank you all for a very successful launch! I know there was a lot of great work put in by everyone to make this happen. Our accounting and sales teams are thrilled to have this functionality working, and that means our customers are also taking full advantage of these enhancements. We appreciate the partnership in the development and testing, and are looking forward to more enhancements in the future."

Bren Rafaelly

Head of Digital Transformation / Benchmade Knife Co.

STX

"Since partnering with Shero Commerce, our eCommerce revenue has grown by 200%. Their 24/7 support and innovative solutions have been game-changers for our business."

James McKenna

Senior Commerce & CX Manager / STX

Memphis Drum Shop

"Working with the Shero team was professional, efficient, and inspiring. The Shero development team was extremely competent and provided solid solutions for our needs, as well as addressing any bugs or issues that arose during the process. Working with Shero exclusively through video technology was a new concept for our team that forced us to embrace modern methods of communication that will likely benefit our future relationships and business endeavors."

Shaun Carman

eCommerce Manager / Memphis Drum Shop

Swag Golf

"We partnered with Shero for the SWAG site development. The dev was highly nuanced, specialized and complex. The Shero team went above and beyond. They were collaborative, organized and professional, consistently setting expectations clearly and usually exceeding them."

Matt Kaminsky

Co-founder & Managing Director / Swag Golf

And you?

Let's build something great together.

Ready to scale your eCommerce business? Tell us about your project and we'll get back to you within 24 hours.

Email

[email protected]

Locations

New York • London • Helsinki • Tirana

Shopify Performance Optimization

Your store might be fast enough in the office