Convert Gnumeric to Markdown.
Drop a GNOME Office spreadsheet and turn every sheet into a tidy Markdown table. It runs entirely in your browser, so your file never leaves your device.
Drag & drop your files
or
Optimize for AI & RAG
Extra cleanup for LLM ingestion: strip HTML, fix smart quotes, tidy Unicode and spacing.
Add YAML front matter
Prepend a metadata block (title, source, date, word & token counts) for knowledge bases and RAG.
Add table of contents
Build a linked index from the headings. Handy for long documents.
Export RAG chunks (.json)
Split the result into retrieval-ready chunks. Download per file from the result panel.
Most converters quietly upload your documents to a server. This one physically can't.
Locked in
gzipped XML.
A Gnumeric workbook keeps your numbers inside compressed XML that only its own app reads. Converting unpacks each sheet into a plain Markdown pipe table.
## Hours
| Month | Hours | Rate |
| --- | --- | --- |
| Jan | 120 | 45 |
| Feb | 96 | 45 |
| Mar | 108 | 50 |
Everything you
actually need.
Spreadsheets in, clean Markdown tables out, with no server and no account anywhere.
It never leaves your browser
Your .gnumeric file is unzipped and parsed on your own device. Nothing is uploaded to any server, ever.
# Heading
- point one
3 chunks
AI & RAG ready
Optional cleanup, YAML front matter, a table of contents and RAG chunk export.
Works offline
Once the page has loaded you can switch off your connection and it keeps converting.
Every sheet
Each sheet in the workbook is read in turn and written out as its own table, under a heading carrying the sheet's name.
Unicode safe
Accents, symbols and non-Latin scripts come through intact as UTF-8.
Free, and unlimited
No sign-up, no quotas, no watermarks. Convert one workbook or a thousand; it all runs the same way, on your own device.
Values,
not the dressing.
Honest about what comes through, and what doesn't. The cell contents survive as a table; the visual layer around them does not.
Kept
4- Cell values
- Every sheet
- Header row
- Unicode / UTF-8
Dropped
4- Formatting
- Formulas
- Charts
- Images
Gnumeric questions,
answered.
Everything worth knowing before you drop in a workbook.
Other converters.
Working with more than spreadsheets? These convert the same way: privately, in your browser.
Markdown to Markdown
.md · .markdown · .mdx
Markdown & MDX source.
HTML to Markdown
.html · .htm
Web page markup.
Plain text to Markdown
.txt
Unformatted text files.
LaTeX to Markdown
.tex · .latex
LaTeX typesetting source.
reStructuredText to Markdown
.rst
Python documentation markup.
AsciiDoc to Markdown
.adoc · .asciidoc
AsciiDoc technical writing.
Org-mode to Markdown
.org
Emacs Org-mode documents.
Textile to Markdown
.textile
Textile lightweight markup.