curl --request POST \
  --url https://api.iyzpdf.com/v1/convert/excel-to-pdf \
  --header "X-API-Key: $IYZPDF_API_KEY" \
  --form "file=@forecast.xlsx" \
  --output forecast.pdf

{
  "fileName": "output.pdf",
  "size": 183240,
  "creditsUsed": 1,
  "creditsRemaining": 49,
  "contentType": "application/pdf"
}