Sending HWP files to people outside Korea
If you work in a Korean office, university, or agency, .hwp is simply what documents are. It is easy to forget that outside Korea almost nothing opens it — and the recipient often will not know what the file even is, only that their computer refuses it. A few seconds on your side prevents that entirely.
What the recipient actually experiences
Worth picturing, because it explains why people do not simply write back and ask.
They double-click the attachment. Nothing happens, or they get an error naming no recognisable application. Word refuses it. Google Docs refuses it. If they search the extension they find contradictory advice, including software that claims to support HWP but fails on their file because the importer only covers a version from the 1990s.
Many people conclude the file is corrupted and either ask you to resend it — producing the identical result — or quietly give up. Neither outcome is visible to you.
What to send instead
Match the format to what the recipient has to do with it.
- They only need to read, print, or file it — send PDF. Hancom Office exports it directly, layout is preserved exactly, and every device opens it. This covers most cases and is the default you should reach for.
- They need to edit and return it — send Word (.docx). They can edit it in Word, Google Docs, or Pages. You will need to reconcile the changes back into your own copy, so agree in advance who holds the authoritative version.
- They need to keep it in the original format — send .hwpx rather than .hwp. Third-party tools read the newer format far more accurately, so even if they end up converting it themselves the result is better. HWP vs HWPX explains why.
If you have already sent it
Rather than resending blindly, send a short follow-up that tells them what the file is and what to do. Something like:
"That attachment is a .hwp file — a Korean document format most software outside Korea cannot open. You can convert it to PDF in your browser at hwptools.com without installing anything, or reply and I will send a PDF instead."
Naming the format matters as much as offering the fix. Once they know it is a format issue rather than a corrupted file, the problem stops being mysterious.
When the document contains forms to fill in
This is the case that causes the most back-and-forth, and PDF alone does not solve it.
Korean official forms are frequently .hwp documents with tables meant to be typed into. A recipient abroad cannot fill in a .hwp, and a flat PDF export is not fillable either. Practical options:
- Send a fillable PDF if your export tool can produce one.
- Send .docx so they can type into the table directly, and accept that spacing may drift.
- Send PDF and accept handwriting — they print, fill in, and scan back. Slow but reliable, and often what actually happens.
- Collect the answers by email and fill the form yourself. Fastest overall when the form must be submitted in its original layout, which is common for anything going to a Korean agency.
A note for universities and agencies
If you send the same documents to international recipients repeatedly — admission packets, visa paperwork, contracts — the problem is structural rather than per-message, and it generates support questions that all have the same answer.
Two things reduce that load durably: publish PDF alongside .hwp wherever documents are offered for download, and add a one-line note on the page explaining what .hwp is and how to convert it. Both are cheaper than answering the question individually, and the recipients who never ask are the ones you would otherwise never hear from.