Shopify Performance Optimisation Agencies
A slow Shopify store costs you money — literally. Every extra second of load time drops your conversion rate. These agencies specialise in making Shopify stores faster: optimising images, cleaning up bloated theme code, fixing render-blocking resources, improving Core Web Vitals scores, and squeezing every millisecond out of your storefront.
97 verified agencies matched
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Speed Plus
📍 Brooklyn, United States
⭐ 5 on Shopify
As one of the most recommended agencies, Speed Plus is a leading digital growth partner trusted by top brands. Note: In addition to our agency services, Speed Plus also offers paid Shopify growth classes through our YouTube channel, available to selected members
Store BuildMigrationsTheme DevelopmentPerformance
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SLASHCART - Store Build & Migration Expert
📍 Bristol, United Kingdom
⭐ 5 on Shopify
SlashCart specializes in upgrading and migrating to Shopify Plus, providing exceptional solutions for D2C, B2B, wholesale, and POS. Our experienced team is dedicated to enhancing your eCommerce presence with custom site optimizations and innovative design strategies.
MigrationsStore BuildPerformanceOngoing Website Management
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The Smith Marketing
⭐ 5 on Shopify
Email: info@thesmithmarketing.com Book a call: https://calendly.com/sajjadwahid/30min Phone: +447719354974 ✔ 9+ Years of Experience. ✔ 250+5-STAR reviews. ✔ 3000+Satisfied Customers. ✔ Top-rated Shopify partner ✔ Affordable Rates. ✔ Operated From Multiple Locations.
Store BuildTheme DevelopmentMigrationsTroubleshootingPerformance
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Ecommhawks
📍 Islamabad, Pakistan
⭐ 5 on Shopify
🏆 Award-Winning Shopify Experts Ecommhawks specializes in Shopify store creation, development, CRO, customization, SEO & speed optimization. Boost conversions & grow your business with us. 📲 Contact: WhatsApp: https://wa.me/61477030091 Email: ecommhawks@gmail.com
Store BuildMigrationsTheme DevelopmentWebsite Audit And Optimization StrategyPerformance
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Voltage New Media Inc.
📍 Victoria, Canada
⭐ 5 on Shopify
Under $5,000
AMP UP YOUR STORE ⚡ 15 years Shopify-exclusive. Plus Partner. The Shopify team DTC & CPG brands stick with year after year. Senior developers, real people you can trust. No contracts, no BS. High-converting design & development that works. voltagenewmedia.com 🇨🇦🇺🇸
Store BuildMigrationsTheme DevelopmentTroubleshootingPerformance
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Silver Carts
📍 Dallas, United States
⭐ 5 on Shopify
SILVER CARTS is a dynamic Shopify Plus tech team consists of professional Shopify developers. Through developing, and optimizing Shopify websites and Shopify Plus stores, we do the retailers we work with justice — and a whole lot more. Please feel free to contact us.
Store BuildPerformanceTheme DevelopmentTroubleshootingMigrations
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Gloross
📍 Lewes, United States
⭐ 5 on Shopify
Under $5,000
Gloross helps ambitious Shopify brands optimize revenue & accelerate growth. With a dedicated team of experts in strategy, UX, design, development, and data-driven conversion optimization, we are committed to delivering tailored solutions that drive measurable results.
MigrationsStore BuildCROPerformanceAnalytics
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Arctic Grey
📍 New York, United States
⭐ 5 on Shopify
Under $5,000
Arctic Grey helps Enterprise Shopify Plus Merchants with everything from custom built site optimizations to brand new eCommerce design & development from scratch. We've supported more than 1,000 Shopify stores, covering D2C, B2B, Wholesale, and Point of Sale (POS).
Business Strategy GuidanceApp DevelopmentProduct And Collection SetupSEOPerformance
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Spell & Sell
⭐ 5 on Shopify
- Shopify Plus & Headless Experts. We build revenue engines, not just stores. - Custom Themes & Headless - Advanced UX, CRO & Tech SEO - Marketing Automation & Data - Full-Service Digital Management Scale faster with a strategic partner: https://shorturl.at/RHPy3
HeadlessStore BuildTheme DevelopmentOngoing Website ManagementPerformance
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Businessist - Speed & Theme Expert
⭐ 5 on Shopify
Under $5,000
Shopify expert specializing in speed optimization, theme customization, and troubleshooting. 10+ years of experience and 10,000+ completed projects. I help stores improve performance, fix issues fast, and create clean, conversion-focused experiences.
PerformanceTroubleshootingTheme DevelopmentStore BuildOngoing Website Management
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Zettler Digital
📍 Franklin Lakes, United States
⭐ 5 on Shopify
Under $5,000
Zettler Digital is a digital marketing agency for Klaviyo retention, paid media and Shopify development. We help brands convert better, keep more customers and spend smarter. Shopify Premier Partners | Klaviyo Elite Partners | Meta Business Partners | Google Partners
Store BuildMarketingCROSEOPerformance
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Endless Digital - Ecom Growth Marketing Experts
📍 Melbourne, Australia
⭐ 5 on Shopify
We’re a results-driven eCommerce growth team helping Shopify brands scale with expert strategy, CRO, paid ads, and creative. With over 10 years’ experience and millions in revenue generated, we turn data into growth for brands ready to reach the next level.
Store BuildPerformanceSEOBusiness Strategy GuidanceMarketing
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RNR Digital Media Group LLC
📍 Thornwood, United States
⭐ 5 on Shopify
Under $5,000
We build reliable, high-performing Shopify stores backed by years of proven results. Trusted by leading automotive, beauty, and lifestyle brands for clean design, seamless functionality, and conversion-focused user experiences.
Theme DevelopmentStore BuildOngoing Website ManagementWebsite Audit And Optimization StrategyPerformance
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Squashed Pixel LTD
📍 Keighley, United Kingdom
⭐ 5 on Shopify
Under $5,000
We are THE expert in all things Shopify. Est. 2009, Squashed Pixel has been helping businesses big and small to grow and sell more online. We specialise in; -Development & Design -CRO -Theme Build -Increase AOV -Site Speed -WMS -POS -Custom Build -Business Growth
Store BuildTheme DevelopmentPerformanceCROMigrations
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Niva Commerce
📍 Wolverhampton, United Kingdom
⭐ 5 on Shopify
NC is a leading UK & India E-commerce Services Company, helping merchants globally with store setup, custom themes, and growth. We only use nivacommerce@gmail.com & info@nivacommerce.com. Any other emails are unauthorized.
Store BuildMigrationsTheme DevelopmentPerformanceApp Development
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Dash Otimiza
📍 Belo Horizonte, Brazil
⭐ 5 on Shopify
Olá, somos um hub completo de serviços e referência em criação de lojas e rebranding com foco em CRO, UX/UI, personalizações, resoluções de bugs e recursos únicos. Além disso, pioneiros e Top1 no Brasil em otimização de velocidade com +950 clientes. Vem vender mais :)
PerformanceStore BuildCROMigrationsTheme Development
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Geocommerce
📍 Jaipur, India
⭐ 5 on Shopify
Our Shopify development and store management services deliver customized, high-performing stores. From bespoke design to seamless app integration and ongoing optimization, we craft every store with precision, ensuring quality, performance, and brand impact.
Store BuildCROMigrationsPerformanceTheme Development
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Jumpstart Commerce
📍 Singapore, Singapore
⭐ 5 on Shopify
As a winner of the Singapore Prestige Brand Award 2024, our mission at Jumpstart Commerce remains clear—to empower businesses to succeed online with expert e-commerce strategy, design, and marketing automation. Every business deserves the opportunity to grow and thrive
MarketingMigrationsPerformanceStore Build
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Elemental
📍 Auckland, New Zealand
⭐ 5 on Shopify
Under $5,000
We make stunning and effective Shopify eCommerce websites for some of New Zealand’s best-loved and emerging brands.
Store BuildWebsite Audit And Optimization StrategyPerformanceCROBusiness Strategy Guidance
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AdornThemes
📍 Ahmedabad, India
⭐ 5 on Shopify
Under $5,000
AdornThemes creates high-performance Shopify themes designed to boost sales and deliver seamless user experiences. With modern design, powerful features, and dedicated support, we help merchants build stunning, scalable online stores that stand out and grow faster.
Theme DevelopmentStore BuildTroubleshootingCustom Domain SetupPerformance
Why store performance matters
Slow stores lose sales and rankings, and speed is one of the few things that helps both at once. Performance work improves your Core Web Vitals and load times by fixing heavy images, bloated themes, and too many apps. On Shopify a performance focused agency finds what is actually slowing your store and fixes the causes, rather than installing another app that adds more code. Faster pages convert better and rank better, so the work pays back twice.
Tips for getting store performance right
- Ask them to measure your store first, so fixes target the real problems
- Confirm they judge success on real field data, not a single lab score
- Check that they optimize images, since image weight is the most common cause
- Ask how they reduce app and script bloat, a frequent Shopify issue
- Make sure they protect the first product image and hero from lazy loading
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Frequently Asked Questions
- How much does Shopify speed optimisation cost?
- A performance audit with fixes typically costs $2,000–$8,000 as a one-off project. Some agencies offer ongoing performance retainers for $1,000–$3,000/month to keep your store fast as you add products, apps, and content over time.
- Why is my Shopify store slow?
- The most common culprits are: too many Shopify apps (each one adds JavaScript), unoptimised images, bloated theme code, third-party tracking scripts, and render-blocking CSS. A performance agency will audit your store and identify exactly what's slowing it down.
- What's a good page speed score for a Shopify store?
- Aim for a Lighthouse performance score of 60+ on mobile (80+ on desktop). Perfect 100 scores aren't realistic for ecommerce stores with dynamic content and third-party scripts. Focus on Core Web Vitals (LCP, INP, CLS) passing thresholds rather than chasing a perfect number.