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Hiring a site speed expert: What you need to know
When should I hire a site speed expert?
Hire one when pages feel slow on phones, Search Console flags poor Core Web Vitals, years of apps and theme edits have piled up scripts, or a redesign or new theme needs checking for speed before it launches.
What skills should I look for in a site speed expert?
Look for a working grasp of Core Web Vitals (LCP, INP and CLS), fluency with Chrome DevTools, PageSpeed Insights and real-user field data, and strong Liquid and JavaScript. Ask for before-and-after field data from stores they have sped up, not just lab scores.
How much does it cost to hire a site speed expert?
Costs depend on how much needs fixing. On Storetasker, theme edits start at $475, and a 30-hour monthly developer retainer, which can keep the store fast as apps and campaigns change, starts at $3,000. Experts quote price, timeline and scope upfront, and getting quotes is free.
Site speed expert: What can they do for you
Hire talent- Core Web Vitals audits
- App & script reviews
- Prioritized fix plans
- Image & font optimization
- JavaScript & CSS cleanup
- Layout shift fixes
- App replacement & cleanup
- Pre-launch speed checks
- Monthly field data reviews
Specialist skills and tasks
Core Web Vitals Audits
Measure LCP, INP and CLS from real shoppers, find the templates, apps and scripts behind each problem, and rank fixes by impact and effort.
Image & Font Optimization
Serve images at the right size and format with Shopify’s image tools, load the main image first, and trim font files and weights that delay text.
JavaScript & CSS Cleanup
Remove unused code, defer scripts that are not needed straight away and break up heavy tasks, so pages respond quickly to taps and clicks.
App Stack Cleanup
Audit installed apps, remove code left behind by old ones and rebuild simple app features directly in the theme, so fewer scripts load.
Layout Stability Fixes
Reserve space for images, banners and app widgets, so product and collection pages stop jumping around while they load.
Performance Monitoring
Track field data in Search Console and Shopify’s web performance report, and check new apps, campaigns and theme updates before they ship.
Real results from the Storetasker network
How Alo Yoga Scales UX Without Hiring In-House
Case Study
Working with Leif over nearly three years has been exceptional. He became a true extension of our team, understanding our brand deeply and consistently delivering high-quality design work across countless projects.
A Shopify Developer for TomboyX
Case StudyTyler is probably the best developer I’ve ever worked with, and I’ve worked with devs across large companies, small companies, and agencies.
A CRO Expert for Scandinavian Biolabs
Case StudyAshna brought exactly the analytical, strategic approach we were missing. Her ability to analyze our data, identify real opportunities, and translate them into actionable recommendations has been invaluable.
A Fractional eComm Manager for Studio McGee
Case StudyWe didn’t have the capacity for a lengthy onboarding process or a lot of day to day direction. Sarah came in, got up to speed quickly, and took ownership of the work.
Storetasker vs everyone else
Common Questions
Still not sure? Book a demo
Which speed scores should we trust?
Lab tests, such as Lighthouse and the lab score in PageSpeed Insights, simulate one visit, so results swing from run to run. Google relies on field data from real shoppers, shown in Search Console, and Shopify’s web performance report also tracks real visits. Google’s data covers a rolling 28 days, so judge fixes over several weeks.
What do LCP, INP and CLS measure?
LCP is how quickly the main image or text appears, INP how quickly the page responds to taps and clicks, and CLS how much the layout shifts while it loads. Google sets a passing level for each, measured across real visits, and Search Console groups your pages by whether they meet it.
Will removing apps make our store faster?
Often, when an app loads scripts on every page. Apps built with theme app extensions take their code with them when uninstalled, but older apps can leave snippets in the theme. An expert audits each app, removes leftovers and can replace simple features, such as badges or size charts, with lightweight theme code.
Does site speed affect our Google rankings?
Core Web Vitals are one of the signals Google uses, but Google still puts the most relevant content first, so speed work alone seldom changes rankings much. The clearer gain is for shoppers, especially on phones and slow connections. Pair it with an SEO expert if rankings are the goal.
Do we need a new theme or a headless build to be fast?
Usually not. A well-built Online Store 2.0 theme with a lean set of apps can be fast. A new theme makes sense when old code and workarounds block every fix, while headless is a much larger investment that few brands need for speed alone.
Can they speed up our checkout?
Shopify hosts and maintains checkout itself, so there is little to tune there beyond keeping checkout apps and extensions lean. Speed work focuses on the pages shoppers see first: home, collection and product pages, search and cart. That is where slow scripts, oversized images and layout shifts usually sit.
How do we keep the store fast after the fixes?
Set limits for image sizes, fonts and scripts, test new apps and campaign pages before they go live, and review field data each month. Many brands keep a developer on a monthly retainer for this, so new features do not undo the gains. Experts work directly with your team over email, Slack and Zoom.
