Local Windows utility
Office Converter
Move a document between office formats without owning Office. Word to OpenDocument, spreadsheets to CSV or JSON, presentations to images — and multi-sheet workbooks that enumerate properly instead of silently losing everything after the first tab.
Converted files land in your Converted folder.
What you can do with it
Handy things people use Office Converter for
A few real-world jobs it makes quick — you'll find plenty more.
- Open a DOCX on a machine that only has a free office suite.
- Pull a spreadsheet out to CSV so a script can read it.
- Export every sheet of a workbook, not just the first one.
- Turn slides into images for a thumbnail sheet or a web page.
What it does
Everything Office Converter handles
A focused set of jobs, each done well — and nothing that phones home.
No licence required
Conversions run through a self-contained document engine, so a machine with no Microsoft Office on it converts just the same.
Every sheet, not just the first
Workbooks are enumerated sheet by sheet. Plenty of converters quietly export tab one and drop the rest — this does not.
CSV and JSON out
Get tabular data into a shape a script, a database import or a notebook can read directly.
Documents as images
Render a document or deck out to PNG or JPG, one file per page or slide.
How it works
From file to finished in a few clicks
- 1
Drop the file in
Any supported office format, one at a time or by the folder.
- 2
Pick the target
A document format, a tabular format, or images — and for spreadsheets, which sheets you want.
- 3
Convert
Everything runs on your machine. The first office conversion installs the document engine, once.
Under the hood
The engines, named plainly
The engines, named plainly.
- Document engine
- LibreOffice-based, ~400 MB, downloaded once on first use
- Spreadsheets
- SheetJS / ExcelJS — CSV, JSON and multi-sheet enumeration
- Markdown to Word
- marked + docx
- Rendering
- PDFium (WebAssembly build) — pages and slides to images
- Output
- docx · doc · odt · txt · xlsx · xls · csv · json · pptx · PNG/JPG
- Platform
- Windows 10/11 (x64) — runs fully on your machine
Converting between office formats is never perfectly lossless — comments, tracked changes, macros and very complex layouts can simplify. Check anything you are about to send on, especially if it started life heavily formatted.
The rest of the belt
More tools in the tray
Questions
Office Converter, answered
Add Office Converter to your tray
Office Converter ships inside BizTray alongside the rest of the toolkit — one small download, no account, no quota.