Documents
A clean, Word-compatible editor with headings, tables, images, comments-ready layout and export to DOCX, HWPX, PDF and Markdown.
Taking you to your language…
Free · No install · AI built inEvery document. One editor. AI built in.
Open, edit and export HWP, Word, Excel, PowerPoint and PDF files right in your browser. Ask the built-in AI to draft reports, build spreadsheets and design slide decks in seconds.
No sign-up required. Your files stay on your device.
10+file formats
12languages
$0to get started
PWAworks offline
Formats
Opens the files you actually get
From government HWP forms to client spreadsheets and signed PDFs, drop any file in and start editing. No converters, no plug-ins.
- HWP · HWPXHangul word processor files, read and write
- DOCXWord-compatible documents with styles and tables
- XLSX · CSVSpreadsheets with formulas, CSV import and export
- PPTXSlide decks you can edit and present
- PDFAnnotate, edit text, sign, merge and reorder
- ODTOpenDocument text files
- RTFRich Text Format documents
- MarkdownMarkdown for notes and docs
- HTML · TXTWeb pages and plain text
Features
A complete office suite, rebuilt around AI
Everything you need to write, calculate, present and sign, in one fast workspace that feels familiar from the first click.
Spreadsheets
Formulas, multiple sheets, formatting and charts-ready data. Open XLSX and CSV, then export back without losing your work.
Presentations
Edit PPTX decks on a free-form canvas, rearrange slides, present full-screen and export to PPTX or PDF.
PDF editor
Highlight, add text, fill and sign, rotate, delete and reorder pages, or merge several PDFs into one.
HWP & HWPX
Open Korean Hangul documents in any browser on any OS, edit them, and save as HWPX, DOCX or PDF.
AI copilot
Chat with your document, rewrite a selection, fix grammar, change tone, translate into 12 languages or explain a formula.
Your AI, your choice
Use Claude out of the box, bring your own OpenAI, Gemini or OpenRouter key, or run models locally with Ollama or LM Studio.
Works offline
Install Omnidoc as an app. It keeps working without a connection, so you can edit on a plane or a train.
Private by design
Files are parsed and edited locally in your browser. Nothing is uploaded unless you choose to sync or share.
Sync & share
Sign in to sync across devices, keep version history and share view or edit links with a single click.
Templates
Start fast with resumes, reports, meeting minutes, invoices, budgets and pitch decks, ready to customize.
Your next document is one click away
No download, no account, no credit card. Open Omnidoc and drop in a file.
Start editing freeAI
Describe it. Omnidoc builds it.
Turn a one-line prompt into a finished first draft, then refine it with the editor you already know.
Documents
Outline to full report, proposal or letter, with headings and tables.
“Write a 2-page project proposal for a community library app”
Spreadsheets
Natural language to tables with working formulas.
“Monthly budget for a 5-person team with totals and averages”
Slide decks
A topic becomes a structured, designed deck.
“10-slide pitch deck for a sustainable coffee brand”
Images
Generate illustrations and drop them into any page or slide.
“Minimal isometric illustration of a home office”
Compare
How Omnidoc compares
Omnidoc works with files from Microsoft Office, Google Workspace and Hancom Office, and adds what they don't offer together in one place.
| Capability | Omnidoc | Microsoft 365 | Google Docs | Hancom Docs |
|---|---|---|---|---|
| Edit HWP / HWPX files in the browser | ||||
| DOCX, XLSX and PPTX in one app | ||||
| Built-in PDF editing and signing | ||||
| Choose your AI model (Claude, GPT, Gemini) | ||||
| Run AI locally and offline | ||||
| Files processed locally on your device | ||||
| Free core editing | ||||
| Start without an account |
Yes Partial or paid No
Comparison based on publicly available information about the web versions of each product as of October 2026. Microsoft 365, Google Docs and Hancom Docs are trademarks of their respective owners. Omnidoc is an independent product and is not affiliated with or endorsed by them.
FAQ
Frequently asked questions
Is Omnidoc really free?
Yes. Editing, importing and exporting every supported format is free, with no sign-up. The built-in AI includes a free daily allowance, and you can use your own API key or a local model for unlimited use.
Can I open HWP files without Hancom Office?
Yes. Omnidoc reads HWP 5.0 and HWPX files directly in your browser on Windows, macOS, Linux, ChromeOS and Android. You can edit them and save as HWPX, DOCX or PDF.
Are my documents uploaded to a server?
No. Files are opened and edited locally in your browser. They are only sent to our servers if you sign in and turn on cloud sync or create a share link. AI requests send only the text you choose to the AI provider you selected.
Which AI models can I use?
Omnidoc uses Claude by default. You can also connect your own OpenAI, Google Gemini or OpenRouter key, or run a model on your own computer with Ollama, LM Studio or any OpenAI-compatible server for fully offline AI.
Will my Word, Excel and PowerPoint files keep their formatting?
Omnidoc preserves text, headings, lists, tables, images, formulas and slide layouts in common files. Very complex layouts, macros or rare features may look different, so we recommend checking important files after export.
Does it work offline?
Yes. Install Omnidoc as a web app (PWA) or use the Windows or Android app. Editing works without a connection; cloud AI and sync resume when you are back online.
Can I edit and sign PDFs?
Yes. Add text and highlights, fill forms, draw or type a signature, and rotate, delete, reorder or merge pages, all in your browser.
Which languages does Omnidoc support?
The interface is available in Korean, English, Japanese, Chinese, Spanish, French, German, Portuguese, Russian, Arabic, Hindi and Vietnamese, and the AI can translate documents between them.
Your next document is one click away
No download, no account, no credit card. Open Omnidoc and drop in a file.
Start editing free