Convert Excel (XLSX) to GitHub Flavored Markdown

Turn Excel (XLSX), the Microsoft Excel spreadsheet format used across offices everywhere, into GitHub Flavored Markdown, GitHub's Markdown dialect with tables, task lists, and strikethrough. FileChanger runs the spreadsheet conversion in one call, no local tooling to install.

In the browser

Upload a file and download the result, no pipeline required. Open the converter.

One API call

POST the file with from=xlsx and to=gfm, get the converted bytes back. Jump to the code.

From an agent

FileChanger ships an MCP server, so agents can run this conversion themselves. See the docs for setup.

Convert Excel (XLSX) to GitHub Flavored Markdown in code

The same call from any language: POST the file to /api/convert, the response body is the converted file.

curl -X POST https://filechanger.io/api/convert \
  -H "X-Api-Key: fc_your_api_key_here" \
  -F "file=@input.xlsx" \
  -F "from=xlsx" \
  -F "to=gfm" \
  -o output.md

import requests

with open("input.xlsx", "rb") as f:
    response = requests.post(
        "https://filechanger.io/api/convert",
        headers={"X-Api-Key": "fc_your_api_key_here"},
        files={"file": f},
        data={"from": "xlsx", "to": "gfm"},
    )

response.raise_for_status()
with open("output.md", "wb") as out:
    out.write(response.content)

const formData = new FormData();
formData.append("file", fileInput.files[0]);
formData.append("from", "xlsx");
formData.append("to", "gfm");

const response = await fetch("https://filechanger.io/api/convert", {
  method: "POST",
  headers: { "X-Api-Key": "fc_your_api_key_here" },
  body: formData,
});

const output = await response.blob();

import java.net.http.HttpRequest.BodyPublishers;
import java.net.http.HttpResponse.BodyHandlers;
import java.nio.file.Path;

String boundary = "----FormBoundary" + System.currentTimeMillis();
byte[] fileBytes = java.nio.file.Files.readAllBytes(Path.of("input.xlsx"));

String body = "--" + boundary + "\r\n"
    + "Content-Disposition: form-data; name=\"file\"; filename=\"input.xlsx\"\r\n"
    + "Content-Type: application/octet-stream\r\n\r\n"
    + new String(fileBytes) + "\r\n"
    + "--" + boundary + "\r\nContent-Disposition: form-data; name=\"from\"\r\n\r\nxlsx\r\n"
    + "--" + boundary + "\r\nContent-Disposition: form-data; name=\"to\"\r\n\r\ngfm\r\n"
    + "--" + boundary + "--";

HttpClient client = HttpClient.newHttpClient();
HttpRequest request = HttpRequest.newBuilder()
    .uri(URI.create("https://filechanger.io/api/convert"))
    .header("X-Api-Key", "fc_your_api_key_here")
    .header("Content-Type", "multipart/form-data; boundary=" + boundary)
    .POST(BodyPublishers.ofString(body))
    .build();

HttpResponse<byte[]> response = client.send(
    request, BodyHandlers.ofByteArray());
java.nio.file.Files.write(Path.of("output.md"), response.body());

import Network.HTTP.Client
import Network.HTTP.Client.MultipartFormData
import qualified Data.ByteString.Lazy as BL

main :: IO ()
main = do
  manager <- newManager defaultManagerSettings
  initialReq <- parseRequest "POST https://filechanger.io/api/convert"
  let req = initialReq
        { requestHeaders = [("X-Api-Key", "fc_your_api_key_here")] }
  request <- formDataBody
    [ partFileSource "file" "input.xlsx"
    , partBS "from" "xlsx"
    , partBS "to" "gfm"
    ] req

  response <- httpLbs request manager
  BL.writeFile "output.md" (responseBody response)

About GitHub Flavored Markdown

GitHub Flavored Markdown (GFM) is GitHub's dialect of Markdown, adding tables, task lists, strikethrough, and autolinks to the CommonMark base. It is the format of every GitHub README, issue, and pull request, making it the most widely written Markdown variant among developers.

Frequently asked questions

How do I convert Excel (XLSX) to GitHub Flavored Markdown?

Upload your file in the browser converter and pick GitHub Flavored Markdown as the target, or POST it to /api/convert with from=xlsx and to=gfm. The response body is the converted file.

Is converting Excel (XLSX) to GitHub Flavored Markdown free?

Yes. The free tier includes 2 GB of conversions per month, metered on input size. See pricing for the paid tiers.

Is there an API for Excel (XLSX) to GitHub Flavored Markdown conversion?

Yes, this whole conversion is one POST to /api/convert (the code examples above show it in five languages), plus an MCP server so AI agents can run it directly.