mdgate converters

XLTX to Markdown in your browser.

Convert XLTX files to GitHub-Flavored Markdown directly in your browser.

Your XLTX stays on your device. No upload. No account.

Starting local converter

Use XLTX to Markdown in your app

$ npm install @mdgate/xlsx 

import { toMarkdown } from '@mdgate/xlsx';

const markdown = await toMarkdown(bytes);

Pure TypeScript, Node.js, Cloudflare Workers, Edge, Browser, No Python, No native addons, No WASM, Zero third-party runtime dependencies

How XLTX to Markdown works

  1. XLTX
  2. workbook parsing
  3. sheets · cells · tables
  4. GitHub-Flavored Markdown

Built for JavaScript runtimes

Node.js

Read local files, uploads, S3/R2 objects, and other byte sources.

Cloudflare Workers

Parse Excel workbooks directly inside Workers without Excel or a native binary.

Browser

Convert XLTX locally without uploading it to a server.

Edge

Run the same TypeScript converter in compatible Edge runtimes.

What @mdgate/xlsx extracts

  • One Markdown section per sheet
  • GitHub-Flavored Markdown tables
  • Merged cells
  • Header-row detection
  • Number formats (dates, percents, currency-style text)
  • Shared strings and typed cell values
  • Encrypted workbook detection

Why @mdgate/xlsx

Runs where your JavaScript runs

No separate processing service. The converter is TypeScript you can call from Node.js, Cloudflare Workers, Edge runtimes, and browsers.

Local conversion

XLTX files can stay inside your application or browser.

Content detection

Recognizes XLTX files from their contents, not only the filename.

Deterministic parsing

The same XLTX file produces repeatable Markdown without model inference.

Small runtime surface

No Python. No native addons. No WASM. No third-party runtime dependencies.

XLTX for AI agents

Turn XLTX files into content your agent can actually work with.

  1. XLTX
  2. Markdown
    • grep
    • search
    • chunk
    • index
    • cache
    • cite
    • reason

Need more than XLTX?

One format

@mdgate/xlsx

Your own set

@mdgate/core
+ @mdgate/xlsx
+ @mdgate/pdf
+ @mdgate/docx

Broad file support

@mdgate/converters

FAQ

Can I convert XLTX to Markdown without uploading it?

Yes. XLTX files can be converted locally in the browser.

Does XLTX to Markdown work in Cloudflare Workers?

Yes. @mdgate/xlsx runs directly in Cloudflare Workers.

Does it require Python?

No.

Does it require native addons or WASM?

No.

What does it output?

GitHub-Flavored Markdown.

Can I install only the XLTX converter?

Yes. Install @mdgate/xlsx instead of the complete converter set.

Does this convert CSV?

No. Use @mdgate/csv for .csv and .tsv.