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Data & Spreadsheets

Data File Preflight.

Source, settings and output stay in this browser. Inspect encoding, delimiter, schema, row count, malformed records, nulls and size before processing. Processing is local and independently checked.

Use Data File Preflight

Private in this browser. Files, schemas and output stay in this browser; the parser never executes data.

No file selected.
Tool options

Options appear after the file is inspected locally.

Preparing the local tool…

How it works

  1. 01

    Paste or choose a bounded data file.

  2. 02

    Set explicit parser or validation options.

  3. 03

    Review and download the independently verified result.

Frequently asked questions

Is YAML, JSON or schema content executed or sent?

No. Data is parsed passively and locally, and remote schema references are rejected.

Does Data File Preflight upload my data?

Data File Preflight runs locally in your browser. Files, schemas and output stay in this browser; the parser never executes data.

What output does Data File Preflight create?

Data File Preflight creates Json output after the result passes its local verification checks.

CSV Delimiter ConverterConvert comma, semicolon, tab, pipe or custom separators safely. Processing is local and independently checked.CSV Encoding ConverterDetect likely encoding and export UTF-8 or another supported encoding. Processing is local and independently checked.Select or Remove CSV ColumnsReorder, rename, keep or drop columns. Processing is local and independently checked.
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