● JSON & Data

CSV Smart Preview

Preview CSV as a table with automatic delimiter detection, header detection and simple column type inference.

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Private by designRuns locally in this browser
Input44 chars · 3 lines
Drop a local text/data file here. Nothing is uploaded.
OutputWaiting for input
↗
Your result appears hereNothing is uploaded. Processing happens on this device.
Shortcut Ctrl/⌘ + Enter
WHEN IT HELPS

Common ways people use CSV Preview

  • Check delimiter and headers before import
  • Preview spreadsheet exports
  • Infer simple column types quickly
QUICK WORKFLOW

How to use it

  1. Paste CSV data
  2. Run Smart Preview
  3. Review delimiter, inferred types and rows
WATCH FOR

Common mistakes

  • Assuming every CSV uses commas
  • Ignoring quoted fields containing delimiters
  • Treating inferred types as a database schema
EXAMPLE

A quick example

A semicolon-delimited export can be detected and previewed without uploading the file.

Why this tool exists

Get the answer without turning it into a project.

Use Smart Preview before importing a CSV into a database or spreadsheet. It surfaces the structure quickly without uploading the file.

Common questions

Which delimiters are detected?

ByteKitly checks common comma, semicolon, tab and pipe delimiters and chooses the most consistent candidate.

How are column types inferred?

The preview samples values and labels columns as number, boolean, date or text when the pattern is clear.