Format Conversion
XLSX Sheet To JSON Schema
Infer JSON Schema from worksheet headers and sample rows with types, enum candidates, and basic constraints
file· File resultOpen tool
Quick start
Call this tool from your code in three languages.
cURL
# 1) Request a presigned URL → returns { uploadUrl, storageKey }
curl -X POST 'https://api.elysiatools.com/api/upload/presign/xlsx-sheet-to-json-schema' \
-H 'Content-Type: application/json' \
-d '{"filename":"excelFile.ext","contentType":"application/octet-stream","size":12345}'
# 2) PUT the file bytes directly to the presigned uploadUrl
curl -X PUT '<presigned uploadUrl>' \
--data-binary @/path/to/file.ext
# 3) Call the tool, passing the returned storageKey for each file field
curl -X POST 'https://api.elysiatools.com/en/api/tools/xlsx-sheet-to-json-schema' \
-F 'excelFile=uploads/2026/01/01/your-tool-1700000000000-abc123.ext' \
-F 'sheetName=Sheet1' \
-F 'headerRow=1' \
-F 'sampleSize=100' \
-F 'enumMaxDistinct=10' \
-F 'requiredThreshold=0.98' \
-F 'schemaTitle=SalesRecord'