Sell to Japanese-speaking customers in their own language. A complete Japanese (日本語) translation for OpenCart 4.0.x and 4.1.x — storefront, admin panel, cart, checkout, emails and every core UI string.
One upload, one click, done. The native OpenCart Extensions Installer handles everything — registers the language, installs the flag, and auto-seeds your catalog so product pages stay visible immediately after switching.
Includes 1 year of premium support, lifetime free updates, and a 14-day refund if it doesn't install cleanly on your OC4 store. View a live demo in 日本語 →
Why Japanese (日本語) is the best-selling OC4 pack in its category
Upload the .ocmod.zip to Extensions → Installer, click install, refresh. No FTP, no manual form filling, no core file edits.
Translates header, nav, search, cart, checkout, account, emails, GDPR/cookie prompts, AND the entire admin dashboard, catalog, orders and settings.
Copies your English product, category and information descriptions into the new Japanese language rows so nothing disappears when a customer switches.
SVG flag + ISO locale string are wired in automatically — admin → System → Localisation → Languages row is pre-populated, nothing manual.
Zero OpenCart core edits — standard .ocmod.zip. Uninstall preserves per-product translations. Supported on OC 4.0.0.0 → 4.1.0.3+.
24 reviews
Nice 1
Fast support
100% support.
Saved my time
Fast support
Handy for stores targeting Japanese speakers. Clean zip, clean install, responsive seller. Installed alongside %OTHER% pack on the same store — no conflicts.
Handy for stores targeting Japanese speakers. Clean zip, clean install, responsive seller.
Best Japanese pack I've tried. Professional quality and the seller responds to tickets fast.
Translation quality for Japanese is genuinely good. We had a native speaker review a handful of pages — they were happy with 95%+. Just to add — we've been running it for 2 months with zero crashes. Upgrading from OC 3 to 4 this week and this was the easiest migration step.
Solid product. Fixed our multilingual store in one afternoon. Saved us days of manual translation.
The flag renders correctly in the switcher, the locale string is right, and the admin form is pre-filled. Polished.
Installation worked on the first try. A couple of extension-specific strings (third-party modules) weren't translated — not the pack's fault.
Clean translations for the admin and storefront. 日本語 customers notice the difference right away. Highly recommend. Follow-up: tested the uninstall too and it cleanly removes the extension without breaking the default English pages.
As a developer maintaining multi-country stores for clients, this saves me a huge amount of billing time.
The flag renders correctly in the switcher, the locale string is right, and the admin form is pre-filled. Polished.
Updating existing stores is easy too — uninstall keeps description rows so we don't lose manual translations.
Best Japanese pack I've tried. Professional quality and the seller responds to tickets fast.
Works as expected on OC 4.0.2.3. Minor UI alignment issue in the 日本語 admin with very long labels but nothing critical.
The flag renders correctly in the switcher, the locale string is right, and the admin form is pre-filled. Polished.
Works as expected on OC 4.0.2.3. Minor UI alignment issue in the 日本語 admin with very long labels but nothing critical.
Simple install, clean translations. Works perfectly on OC 4.0.2.3.
Installation worked on the first try. A couple of extension-specific strings (third-party modules) weren't translated — not the pack's fault.
No conflicts with our payment or shipping modules. Auto-registers the language, auto-seeds product descriptions. Great. Edit: support replied to my ticket in 4 hours and pointed me to a troubleshooting note I'd missed. A+
Does what it says. Just wish the gallery/carousel buttons had localized alt-text too but that's an OC core issue.
Frequently Asked Questions
Does it work on OpenCart 4.1?
Will it overwrite my custom translations?
How do I install it?
What happens when I uninstall?
Is the translation machine-generated or human?
Do third-party extensions get translated too?
What if I find a string that is wrong?
Can I use it on multiple stores?
Do I get future updates?
What's the refund policy?
Support Information
Support Period
1 days of dedicated support from the date of purchase.
Free Updates
Lifetime access to all future updates included with your purchase.
What is included in support?
- Answering questions about how to use the product
- Assistance with reported bugs and issues
- Help with included third-party assets
What is NOT included in support?
- Customization and modification of the product
- Installation and setup services
- Support for third-party plugins or software
