Build
Shopify theme upgrade (customizations kept)
Your theme is out of date, but it holds custom work you paid for. I move that work onto the new version in a preview theme, and nothing goes live until you have checked it.
What's included
- A list of the custom code, sections and app blocks in your current theme
- The new version installed as a preview, with your live store untouched
- Every customization moved across and retested
- All templates checked on desktop and mobile, plus Shopify's theme checker
- A copy of the old theme kept, so you can switch back
Sounds familiar?
- Your theme is several versions behind, and new features never reach your store.
- A developer changed the code, and you are afraid an update will wipe that work.
- Shopify says your code edits could not be included in the update.
If one of these is yours, send me a link and a few lines. Describe your task
How a project runs
Step 1: Send the task
A link and a few lines is enough.
Step 2: Fixed estimate
Hours, scope and deadline before any work starts.
Step 3: Build & review
On a preview theme. Nothing goes live without your OK.
Step 4: Pay on delivery
Exactly the estimate. Nothing added later.
Projects up to 20 hours usually need no prepayment. Bigger ones are agreed individually.
30-day warranty. Critical bugs from my work get fixed free, even after that.
Related work
Projects where I did this work, each with the problem, the decisions behind the build and the result.

Kidoriman: theme upgrade, speed and tracking
A slow mobile home page cut from 8.5 s to 3.4 s LCP, plus a clean theme upgrade.
Shopify theme upgrade · Speed optimisation

Organic Blank
Ongoing support for a two-store wholesale brand: duplicate-URL clean-up and a 574-variant product.
Shopify theme support · Technical SEO


Zoocchini: one store for retail and wholesale
Moving a separate wholesale store into the retail store with native Shopify B2B.
Shopify B2B and wholesale setup · Store consolidation
Questions
Can't I just press Update in Shopify?
Theme editor settings are copied over, but Shopify warns that code edits may not be. If your theme has custom code, someone has to move it by hand and test it.
Will customers see anything while you work?
No. The work happens on an unpublished theme. You review it through a preview link and decide when it goes live.
Have you done this on a live store?
Yes. For Kidoriman, a clothing brand on Shopify Plus, I started from the clean new theme and re-applied every customization. It is now the live theme, with no new theme-check errors.
Have a task like this?
Send a link and a few lines about what you need. I reply within 1 business day with questions or a fixed estimate.
Get a fixed estimate- The estimate is the priceHours and total agreed before work starts. No re-estimates.
- No prepayment on small projectsProjects up to 20 hours usually need none.
- 30-day warrantyCritical bugs from my work get fixed free, even after that.