Who runs this site
jusoshift.com is built and run by one person in Korea. There is no company behind it — it started as a personal tool and grew into a small independent site. It is not affiliated with any government agency, and it does not sell anything.
What the site does
It converts Korean addresses into their official English (romanized) form and splits the result into the fields that overseas shops actually use — Address Line 1, Address Line 2, City, State, ZIP. The data comes straight from the Korean government's road-name address system (juso.go.kr), so the spelling is the standard one that Korean customs and couriers can read by machine. Around the converter there are guides on the things you run into right after the address: the personal customs code (PCCC), duties, tracking, and what to do when a parcel goes wrong.
Why it exists
It did not start as a business idea. I was trying to order something on Amazon and the shipping form was split into Address Line 1, Address Line 2, City, State and ZIP. I was not sure which part of my Korean address belonged where. Searching made it worse: one blog said Gangnam District, another said Gangnam-gu, and I could not tell which was right. I put the order off that day.
Later I found the answer had been in government data all along. Every Korean address has an official English form in the road-name system, and the romanization rules are clear. The only problem was that the data, though public, was not connected to the shape of a shopping form. You had to look things up in several places, check the rules yourself, and copy each piece into the right box by hand.
After doing that a few times I thought it would be easier to make a small tool for myself: fetch the official spelling and divide it into the fields each site wants. That was the whole idea.
What I learned while building it was that showing a result is the easy part. What people actually get stuck on is around it — what to type in, what the result means, and when to use it. So explanations started to sit next to the tool, and then the questions that come right after an address (customs code, duties) got their own pages.
It was not finished on day one. I built it, used it, and fixed what was missing, one thing at a time. Going forward I care more about keeping what is here accurate than about adding features.
How the guides are written
Every guide is written by hand, not generated in bulk. Where a guide describes something I have done myself, it says so; where it is based on official rules or documentation, it links to the source. Customs and tax rules change, so those pages carry a last-modified date and a note to double-check the official source before relying on them.
Data source and privacy
Address data: Ministry of the Interior and Safety, road-name address system (juso.go.kr). Lookups are made from your browser directly to that public API — the address you type is not sent to or stored on this site's server. Details are in the privacy policy (Korean).
Contact
Corrections, error reports and suggestions are welcome via the contact page. Replies may take a few days — it is one person.