How do I revert theme code changes or restore a previous version in Shopify?

Shopify doesn’t provide a permanent “undo” button for theme code. But the new code editor includes a built-in Timeline and Local History system that lets you safely review, compare, and restore recent changes — even without duplicating your theme.

Step 1 – Best protection (always do this first)

Online Store → Themes → Three dots → Duplicate This creates a full backup copy of your theme before any code edits.

Step 2 – Open the Shopify code editor

Online Store → Themes → Three dots → Edit code Open the file you changed from the left file list.

Step 3 – Open Timeline (left panel)

Left sidebar → Click Timeline This shows every saved version of the current file (Version 1, Version 2, Version 3…).

Step 4 – Use Local History (advanced recovery)

Timeline panel → Click the three dots → Select Local history → Find entry to restore → Shopify shows all files → Click your file → You will now see every saved version of that file.

Step 5 – Compare changes

Click any version → Shopify highlights what was added, removed, or edited by comparing two files side-by-side.

Step 6 – Restore any version instantly

Select the version you want → Click the → Apply arrow → That version becomes your live file immediately.

Step 7 – Reset to original theme code

Open Original version → Compare with your file → Click → Apply to fully restore the clean default code.

Step 8 – Important limitation

Timeline and Local History are temporary. Old versions are auto-deleted after a few days, theme updates, or major edits. Once removed, recovery is not possible.

Step 9 – Best practice going forward

Always duplicate your theme before editing code. Timeline is a short-term safety net — duplicate themes are your real long-term backup.

✅ Result: You can safely review, compare, and instantly restore Shopify theme code changes using Timeline and Local History — even without a backup.