CSV Viewer

Open CSV files as a navigable table without uploading them or executing spreadsheet formulas.

Private browser workspaceInput: CSV / TSV → Output: Table preview

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Your file never leaves this browser

Processing happens locally using browser APIs and on-device code. Closing this tab clears the working data.

How it works

Done in three simple steps

Choose csv / tsv from your device or use the available text controls.

Choose the available options and process the input locally.

Inspect the result using the viewer controls.

Good to know

Will leading zeros or long IDs change?+

No. The viewer keeps cell values as strings and does not infer numbers, dates or formulas.

Are my files uploaded?+

No. Processing happens on this device. The tool may download its own code, but source files and output are not sent to a processing server.