LOCAL FILE VIEWER & EDITOR

Open HWP, PDF, and spreadsheet files in your browser.

Open files without installing software. Edit supported formats and save them to your device.

Your file is processed only in this browser

See supported features

HWP · HWPX

Open and read Hangul documents.

Read HWP and HWPX files without installing another app.

Quick document view
Full-text search
Local browser processing
No installation

Open the HWP/HWPX viewer

MD · MARKDOWN

Read and edit MD files live.

Open a lightweight Markdown reader and preview with source and rendered output side by side.

Edit MD source
Live preview
GFM tables and tasks
Save to device

Open the Markdown editor

PDF

Open PDF files in a quiet, focused reader.

Read in a focused view, then reorder, rotate, delete, extract, or merge pages and save a new PDF.

PDF text search
Reorder, rotate, and delete
Extract selected pages
Merge and save PDFs

Open the PDF reader

CSV · TSV · XLS · XLSX

Open tabular data and edit it cell by cell.

Start with a blank sheet or open a CSV, TSV, XLS, or XLSX file and edit it locally in your browser.

Cell editing
Table paste
Multiple sheets
CSV, TSV, and XLSX export

Open the spreadsheet editor

Privacy

Your file stays in this browser.

OpenFile does not send or store the file name or document content.

How local processing works

FILE GUIDE

Open Hangul, Markdown, PDF, and spreadsheet files without installing an app

OpenFile is a local browser tool for HWP, HWPX, Markdown, PDF, and spreadsheet files. Read and edit documents, organize PDF pages, or edit tables without sending files to a server.

Open HWP and HWPX documents

View HWP 5.x and HWPX documents without Hancom Office. Read text, tables, and images, search the document, then continue in the editor when you need to make changes.

Read and edit Markdown

Open an MD or MARKDOWN file to see the source and rendered preview together. Edit with live feedback, including GFM tables and task lists, then save the file to your device.

Read and organize PDFs

Read with thumbnails and continuous pages, then search and jump through the document. Reorder, permanently rotate, delete, extract, or merge pages and save the result as a new PDF.

Open and edit spreadsheets

Open CSV, TSV, XLS, and XLSX files to edit cells and paste tabular data. Review multiple sheets, then save to your device as CSV, TSV, or XLSX.

Format limits: password- or DRM-protected HWP and HWPX files, legacy HWP 3.x files, and encrypted PDFs are not supported. Raw HTML and external images in Markdown are restricted. Saving a modified PDF can invalidate existing digital signatures.

SUPPORTED FORMATS

Supported formats at a glance

Drop a file on the home page to open the matching tool instantly, without uploading it.

File format	Available actions	File limit	Key limits
HWP 5.x	Open · text search	Up to 20MB	HWP 3.x, password-protected, and DRM files excluded
HWPX	Open · text search	Up to 20MB	Encrypted or damaged packages excluded
MD · MARKDOWN	Preview · edit · save MD	Up to 5MB	Raw HTML, external images, and Mermaid are restricted
PDF	Open · search · reorder · rotate · delete · extract · merge · save	Up to 50MB	Encrypted PDFs excluded · editing workspace up to 100MB total
CSV · TSV	Open · edit cells · export CSV, TSV, or XLSX	Up to 15MB	UTF-8 and EUC-KR text supported
XLS	Open multiple sheets · edit cells · export XLSX	Up to 15MB	Formulas preserved but not recalculated · some cell formatting and macros are not preserved · encrypted files excluded
XLSX	Open multiple sheets · edit cells · export XLSX	Up to 15MB	Formulas preserved but not recalculated · encrypted files excluded

See all supported features and limits

THREE SIMPLE STEPS

How to use OpenFile

1Choose a fileDrop a file on the home screen or use the file picker.
2Open it in the browserThe matching HWP viewer, Markdown editor, or PDF Reader opens automatically. Spreadsheet files continue in the dedicated editor.
3Read, edit, and saveEdit the document or organize PDF pages, then save the result as a new file.

FAQ

Frequently asked questions

Can I open HWP files without Hancom Office?

Yes. Supported HWP 5.x and HWPX files open directly in this browser without installing another application.

How do I preview an MD file?

Open an MD or MARKDOWN file to see its source in the MD reader and the rendered Markdown preview side by side.

Can I open a PDF without uploading it?

Yes. PDF rendering and text search happen in your current browser, and the file is not sent to a server.

Is my file uploaded to a server?

No. File selection, reading, search, editing, and saving happen in your current browser. OpenFile does not send the file name or document content to a server.

Will every HWP document look identical?

Basic text, tables, and images are practical to read, but complex objects, external fonts, and precise print layout can differ from the original.