InfyTool
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Excel to JSON converter

Spreadsheets into developer-ready JSON — headers as keys, one object per row, on your own device.

Excel (XLSX/XLS/ODS), CSV or JSON · converted on your device, nothing is uploaded

No size limit · files are processed on your device and never uploaded · how it works

Advanced settings (optional)
Output
Convert to

Rows as an array of objects (first row = keys) — ready for code and APIs.

Runs in your browser. Files are never uploaded — you can go offline after the page loads.

How to use the Excel to JSON

  1. Click “Choose Files” or drop your images into the box above. Whole folders work too.
  2. Adjust the Advanced settings if you need to, then click “Convert”.
  3. When the row shows Done, click “Download” — or “Download all” for a ZIP.

Easy to use

Drop files, pick options, download. Whole folders at once, no signup, no daily limit.

Best quality

The same engines the professionals use — SVGO, resvg, MozJPEG, libwebp, libavif — compiled to run in your browser.

Private & secure

Files are processed on your device and never uploaded. Close the tab and nothing remains anywhere.

Frequently asked questions

How are multiple sheets represented?

A single-sheet workbook gives a plain array of row objects; multi-sheet gives {"Sheet1": [...], "Sheet2": [...]} — lossless and predictable to consume.

Other presets

Excel / CSV / JSON ConverterSpreadsheets, CSVs and JSON converted in any direction CSV to JSONTurn a CSV into a clean JSON array of objects

Your files never leave your device

Most online converters upload your file to a server. InfyTool ships the actual encoders to your browser as WebAssembly instead, so processing happens inside your tab — faster for batches, and nothing to delete afterwards.

  • No upload, ever. Turn off Wi-Fi after the page loads and every tool keeps working.
  • No limits. No file-size cap, no queue, no watermark, no account.
  • Runs on your CPU. Batches use several cores in parallel; nothing is throttled.

More free tools

Need graphics to work with?

InfyTool is built by the same team as these free libraries.

InfyPNGFree transparent PNG graphics for mockups and social posts. InfySVGFree SVG designs and illustrations, ready to optimise or convert. InfyIconFree SVG and PNG icons you can open directly in these tools.