01 / JavaScript
Every app wants the main thread
Third-party scripts, pixels and app embeds compete to run first. We identify what can be delayed, scoped, replaced or removed safely.
Shopify Speed Optimization
Your storefront should feel fast before the score says it is.
We trace the weight, script contention, layout shifts and rendering delays that customers actually experience—then fix the Shopify theme without blindly removing the features your business depends on.
Core Web VitalsTheme-level fixesBuying-flow QA
Where projects go wrong
A Lighthouse score is evidence. It is not the strategy.
The slowest template, the most valuable traffic source and the mobile buying path rarely fit into one synthetic number. We work from real constraints and fix the bottlenecks that customers can feel.
02 / Media
The hero arrives after the customer
Image sizing, formats, responsive sources, video loading and font delivery often decide whether the first screen feels immediate.
03 / Theme
Liquid can be expensive too
Nested loops, repeated snippets, oversized sections and hidden DOM can make a theme heavy before an app loads.
04 / Measurement
Lab wins, field losses
We distinguish controlled test results from field data and verify changes on the templates, devices and journeys that matter.
What is included
Work that ends in a better storefront—not another deck.
01
Template-level performance baseline across representative mobile and desktop pages
02
Theme, app, script, font, image and video dependency inventory
03
Prioritized fixes based on user impact, implementation risk and storefront value
04
Scoped Liquid, JavaScript, CSS and asset-delivery improvements
05
Core Web Vitals and before/after evidence for the pages in scope
06
Cart, product form, analytics, consent and app-functionality regression checks
How the engagement moves
Profile
We measure representative pages, inspect the loading chain and separate repeatable bottlenecks from synthetic-test noise.
Remove friction
We ship the highest-confidence theme and asset fixes first, then handle heavier app and architecture decisions.
Verify
We retest performance and the buying path, document the delta and leave a clear list of constraints that remain.
Straight answers.
Can every Shopify store reach a perfect performance score?+
No. Apps, tracking, fonts, rich media and Shopify platform behavior create real constraints. We prioritize measurable user experience and revenue-critical pages over a decorative score of 100.
Will speed work break our apps or tracking?+
It should not. We inventory scripts and dependencies first, then test the buying path, consent behavior, analytics and key app features after each meaningful change.
What do you need to start?+
The store URL is enough for an initial conversation. Theme access, analytics, Shopify reports and app context help us separate a genuine bottleneck from lab-test noise once the work begins.
Free discovery call
15 minutes. No charge. We tell you if we can fix it.
Bring the problem: a leaking checkout, a feature your last developer said was impossible, a store that needs rebuilding. You leave with a straight answer and, if it fits, a fixed-price proposal within 48 hours.
Book a free 15-minute call- Pick a slot that suits you, any time zone
- Video or phone, your choice
- No pitch deck, no retainer, no follow-up sequence
© 2026 Thought Bulb Studio
Tell us what's not working. We'll tell you if we can fix it.
No sales call. No deck. Just a direct conversation about your store, what it's costing you, and whether we're the right fit to solve it.
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A straight answer on the call, not a follow-up email
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Fixed-price, scoped proposal in 48 hours
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No retainer, no commitment — just an honest conversation
Founder - Thought Bulb
Talk to Robin directly →