App-by-app load map
Every installed app listed with what it loads on each template, and whether that page needs it.
The Problem
Each App You Added Left Something Behind
Most slow stores weren't built slow. Each app added a script, a widget, or a font, and some deleted apps left code behind. Nobody sees the total until mobile shoppers leave.
01 · Jumping buttons
Add to Cart jumps just as your thumb lands on it.
Layout shift and tap fixes keep buttons where shoppers expect them.
02 · Ghost scripts
Apps you deleted still load scripts on every page.
Leftover code from removed apps gets cleaned out of your theme.
03 · Red scores
Your mobile PageSpeed score shows red.
Core Web Vitals from real shoppers, by page type, guide every fix.
04 · Heavy widgets
Reviews and chat widgets load everywhere, even where unused.
App scripts load only on the pages that use them.
You open your best-selling product on your phone and wait. The photo appears. A reviews widget pushes it down, a chat bubble pops in, and the Add to Cart button jumps as your thumb lands. Your PageSpeed report shows a red mobile score. You deleted two apps last spring, yet their scripts still load on every page. Meanwhile ad costs keep rising, and each slow product page gives paid visitors a reason to leave.
We start with your Shopify web performance report, which shows real-visitor Core Web Vitals by page type. Then we run lab tests on the same templates and check what every app loads, and where. We remove leftover code, load app scripts only where they're used, and fix images and fonts in your current theme. Your design stays exactly as it is. Only the weight behind it changes.
Your current theme, kept
We fix the code and files behind your design instead of selling you a rebuild.
Every app checked separately
Each app is measured for the scripts it adds, where they load, and what it costs.
Measured on real visitors
Shopify's web performance report shows how fast pages load for real shoppers, by page type.
Our Speed Fix Process
From Free Speed Review to a Faster Store in Five Steps
You see the starting numbers, the ranked fix list, and a preview of every change. Your live theme stays untouched until you approve the copy.
We read your web performance report, run Lighthouse on your home, collection, and product pages, and list every app. You get a short summary of what's slowing the store and a fixed quote.
What's Included
What You Get With Shopify Store Speed Optimization
Every project covers the audit, the fixes on your current theme, a speed report, and support after launch. Nothing gets redesigned unless you ask.
Compare Options
DeveloperLook vs a Speed App vs a Freelancer
A speed app or a freelancer can fix part of the problem, and both cost less upfront. Here's where each stops, and what a Shopify speed optimization agency adds.
| Feature | DeveloperLookBest fit | Speed app | Freelancer |
|---|---|---|---|
| Upfront cost | Fixed quote after a free review | Low monthly fee | Lowest hourly rate |
| Time to start | Review within 2 days | Minutes to install | Depends on availability |
| Leftover app code | Found and removed | Not touched | Sometimes, if asked |
| App script loading | Only on pages that need it | Generic defer rules | Case by case |
| Images and fonts | Fixed in theme code | Compressed automatically | Usually covered |
| Testing before launch | Theme copy and real phones | Applied to the live store | Varies by person |
| Real-visitor results | Checked for 30 days | Lab score only | Rarely tracked |
| After the project | Code you keep, no fees | Gains stop if uninstalled | Handover varies |
DeveloperLook
Speed app
- Upfront cost
- DeveloperLook: Fixed quote after a free reviewSpeed app: Low monthly fee
- Time to start
- DeveloperLook: Review within 2 daysSpeed app: Minutes to install
- Leftover app code
- DeveloperLook: Found and removedSpeed app: Not touched
- App script loading
- DeveloperLook: Only on pages that need itSpeed app: Generic defer rules
- Images and fonts
- DeveloperLook: Fixed in theme codeSpeed app: Compressed automatically
- Testing before launch
- DeveloperLook: Theme copy and real phonesSpeed app: Applied to the live store
- Real-visitor results
- DeveloperLook: Checked for 30 daysSpeed app: Lab score only
- After the project
- DeveloperLook: Code you keep, no feesSpeed app: Gains stop if uninstalled
Projects We've Built
Ecommerce Projects We Have Built
Shopify and ecommerce stores we've built for clients, with the kinds of themes and app setups we work inside every week.
Mavenza Fashion Ecommerce App and Admin Dashboard
- Business
- Fashion
- E-commerce
Fuison Fashion Ecommerce Website and Dashboard
- Fashion
- Dashboard
- E-commerce
Borna's General Hardware Ecommerce Website
- Retail
- E-commerce
- Website
Glamory Beauty & Makeup Ecommerce App and Dashboard
- Beauty
- Fashion
- E-commerce
What Our Clients Say
What Clients Say After Launch
Feedback from store owners we've helped with checkout, speed, and catalog work.
We were getting plenty of traffic, but far too many people were leaving at checkout. The buying process had simply become too complicated. The team took the time to understand where customers were dropping off, then rebuilt the checkout flow and cleaned up the shopping experience. What I really appreciated was that they didn’t just make the store look better, they actually solved the problems that were costing us sales. The whole store feels faster, simpler, and much easier to buy from now. Exactly what we needed.
We had a different kind of problem. People were visiting the store, adding products to their carts, and then disappearing before they finished the order. We had tried a few apps and made changes here and there, but nothing really seemed to solve the bigger issue. The team went through the shopping experience with us and pointed out things we hadn't really noticed ourselves. They cleaned up the cart and checkout flow, made the mobile experience much smoother, and helped us make the store feel easier to shop. I’m not going to pretend we fixed everything overnight, but it finally feels like the store is helping the sale instead of getting in the way of it.
Our old store was making it way too difficult for people to find products. We had a large catalogue, but the search, filters, and mobile navigation were frustrating customers. The team completely changed how the store handled product discovery and made the experience much easier to use on mobile. I was especially impressed by how much thought went into the customer journey rather than just the visual design. They understood what we were trying to achieve and turned it into a store that actually feels built for our customers. We’re genuinely proud of the result.
1,000+
Projects shipped
10+
Years of experience
Top 3%
Upwork Top Rated Plus
5 stars
Average review score
Work Culture
Why Shopify Merchants Trust Us With Speed Work
Speed work goes wrong when apps get deleted by guesswork or tested on a fast laptop. These habits keep your store fast and working.
Measured before anything changes
We record real-visitor and lab numbers for each template before the first edit. You judge the result on the same pages with the same tests.
Apps judged by what they cost
Each app is weighed on the speed it takes and the monthly fee it charges. If one doesn't earn both, you see the numbers and decide.
Your design stays yours
Speed fixes happen behind the design you already approved. If a change would alter how a page looks, we ask first.
Changes tested on a copy
Every fix is built on a copy of your live theme and checked on real phones. Shoppers only see it after you approve it.
Honest about app trade-offs
Some apps are worth the speed they cost, and some features belong in theme code. We'll say which is which, even when the answer is to change nothing.
You own every change
Every fix lives in your theme files, with notes on what changed and why. There's no speed app to keep paying for.
Overview
What does a Shopify speed optimization service include?
DeveloperLook is a Shopify speed optimization service for stores slowed down by apps and old code. We map what every app loads, remove leftover code, and fix images, fonts, and script order. Projects start at $650, most finish in 1 to 2 weeks, and your current design stays exactly as it is.
DEVELOPERLOOK
Project facts · Shopify Speed Optimization
- Service
- Shopify speed optimization service (app, image, script, and theme code fixes)
- Typical timeline
- 1 to 2 weeks for key templates, up to 4 weeks storewide
- Platforms
- Shopify and Shopify Plus, Online Store 2.0 and older themes
- Built with
- Liquid, JavaScript, Lighthouse, PageSpeed Insights, Chrome DevTools, Shopify CLI
- Experience
- 10+ years of development experience and 1,000+ shipped projects
- Post-launch support
- 30 days of post-launch support
- Communication
- Calls in US, UK, and AU business hours
- Starting price
- From $650 USD, fixed scope after a free review
Reviewed 28 Sep 2026 by Saimul Islam
Good fit
Shopify stores with a red mobile score
Your PageSpeed Insights report shows a poor mobile score, and everyone blames the apps, but nobody can say which ones.
Stores that removed apps but stayed slow
You uninstalled apps to speed things up, yet the store feels just as slow because their code still sits in your theme.
Brands happy with their current design
You like how your theme looks and sells, so a rebuild feels wrong. You want a faster store without a redesign.
Shopify Plus teams before a big sale
Your Black Friday ads are booked, and the product pages they point to are your slowest ones.
Agencies with a slow client store
Your client wants Shopify site speed optimization before a launch, and you need a specialist who works under your brand.
Not a fit
Non-Shopify site
Your store isn't on Shopify. Our Website Speed Optimization service covers WordPress, WooCommerce, and custom sites, hosting and caching included.
App cost report first
You want a written report on every app, its monthly cost, and leftover code before any fixes. Our Shopify Store Audit covers that.
Theme beyond saving
Your theme has been patched so often that fixing it costs more than a clean build. Custom Shopify Theme Development fits better.
One small image fix
You only need a fix under $650, like shrinking one set of banner images. Your theme settings or a simple app covers that for less.
Not sure we're the right fit?
Send a two-line brief. We'll tell you honestly whether we're the right team.
Pricing
Transparent Starting Prices for a Faster Shopify Store
These are starting points in USD. Your final price depends on how many apps you run and how customized your theme is, and you get a fixed proposal after a free speed review.
For stores that need the pages shoppers see most made faster: home, collection, and product.
$650one-time, USD
- Home, collection, and product templates
- Leftover app code removed
- App scripts loaded only where used
- Image and font loading fixes
- Speed report before and after
- 30 days of post-launch support
Recommended
For stores where every template feels slow, including cart, search, and blog pages.
$1,350one-time, USD
- Everything in Key Template Fix
- Every template and app reviewed
- Layout shift and slow tap fixes
- Tracking tags and pixels cleaned up
- Keep, limit, or remove advice per app
- 30 days of post-launch support
For heavily customized themes that need code rebuilt, not just trimmed, in about 3 to 4 weeks.
$2,450one-time, USD
- Everything in Full Store Speed Pass
- Theme JavaScript and CSS refactored
- Up to 2 small apps rebuilt as sections
- Speed budget for each template
- Handover notes for your team
- 30 days of post-launch support
For Agencies
White-Label Speed Fixes for Agencies and Studios
You own the client relationship and the store's design. We supply white-label Shopify speed optimization services: the audit and the theme fixes, built on a theme copy with a report under your brand. You keep the credit.
How the partnership works
White label: your client only ever sees your brand
- Your client
- You, the agency
- DeveloperLook
Share the brief
Send collaborator access, the client's deadline, and any speed reports they've seen.
- Client needs
- You share the details
- Details received
We propose and staff
You get a fixed quote, a delivery date, and the template list upfront.
- Scope and plan
- Proposal to resell
- Your quoteYOUR LOGO
Fix and hand off
We fix everything on a theme copy and send the report under your brand.
- Done by our team
- Your brand on it
- Handed to your clientDone
Partner with DeveloperLookDelivered under your brand
Stay client-facing
We work under your brand and talk to your team only.
Predictable delivery
Fixed scope and a delivery date, with QA before anything reaches your client.
Speed specialists
App audits, leftover code, and Core Web Vitals fixes, handled without hand-holding.
Flexible capacity
Bring us in for one store before a launch, or for every client.
The Right Technology for Your Project
Technology Stack
We work inside Shopify's theme architecture and measure with the tools Google and Shopify use, so your team can check every result.
PageSpeed Insights
Lighthouse
Chrome DevTools
Google Search Console
Liquid
JavaScript
CSS
HTML
- Shopify
- Shopify Plus
- Shopify CLI
Node.js
Google Tag Manager
Google Analytics (GA4)
Meta Pixel
TikTok Pixel
FAQ
Frequently Asked Questions
Straight answers on Shopify speed, app bloat, page speed scores, and what the work costs.
Saimul IslamFounder & CEO, DeveloperLookStill have questions?
Send a message or book a call with the team.
Our speed work starts at $650 for your home, collection, and product templates, including leftover code removal and a speed report. A full pass on every template and app is $1,350, and a deep theme refactor is $2,450. You get a fixed quote after the free review.
Most key-template projects take 1 to 2 weeks from the free review to launch. A full store pass takes 2 to 3 weeks and a deep refactor up to 4, since every change is tested on a theme copy first. Real-visitor numbers then need a few weeks of traffic to catch up.
Start with the pages that carry your sales: home, collection, and product. Check what each app loads there, remove code left by deleted apps, and defer scripts that can wait. Then fix image sizes, reserve space for widgets, and retest on a mid-range phone rather than a laptop.
Many do, because each app can add scripts, styles, and fonts to pages that don't need them. Apps built as theme app extensions don't edit your theme code, so they remove cleanly. Older apps that edited theme files can leave code behind, as Shopify's help center notes.
Lighthouse, the engine behind PageSpeed Insights, rates 90 or above as good, 50 to 89 as needs improvement, and below 50 as poor. Its mobile test simulates a mid-tier phone on a slowed connection, so app-heavy stores score lower there. Real-visitor Core Web Vitals matter more to Google.
Often, yes, because much of the slowdown comes from how apps load, not whether they're installed. We load each app's scripts only where they're used, delay chat and review widgets until a shopper scrolls or taps, and clear out leftover code. If an app still costs too much, you'll see the numbers.
Your design stays the same unless you ask for a change. We work on the code behind each page: script order, image sizes, font loading, and leftover app code. If a fix would change how something looks, such as replacing an autoplay slideshow, you see a preview and decide.
We use two sources: lab tests and real-visitor data. Lighthouse runs on the same templates with the same settings each time, so scores compare fairly. Shopify's web performance report shows real-visitor Core Web Vitals by page type for the last 30 days and marks app installs on its chart.
We fix it at no extra cost if it happens within 30 days of launch, on any template we worked on. After that, your report lists what each template loads, so your team can judge a new app's weight before installing it or ask us for a quick check.
You do: every change lives in your own theme files, and there's no speed app to keep paying for. Your report records what we changed and why. If you switch themes later, that list shows which fixes to carry over, since code changes don't move to a new theme on their own.
Saimul IslamFounder & CEO, DeveloperLookStill have questions?
Send a message or book a call with the team.
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