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FeuTex · free tools runs in-browser no bloat built by LiMiT

Online CSV File Generator

Create a clean CSV quickly: define columns (name + type), pick delimiter/newlines, generate deterministic sample rows with a seed, then copy or download the CSV.

Category: Data · URL: /tools/online-csv-file-generator.html
Types: seq, int, float, text, email, date, uuid, bool, price, const
Optional props: seq.start, const.value
Runs locally in your browser (no upload).
Privacy: runs locally in your browser. No uploads, no tracking scripts.

How to use

Define your columns, choose output options, then generate.

  1. Edit the Columns JSON (array of columns with name and type).
  2. Set Rows and an optional Seed (same seed → same output).
  3. Pick delimiter, newline style, and quoting rules.
  4. Click Generate CSV, then copy or download.
Keywords this page targets (natural cluster): online csv file generator, generate csv online, csv generator from columns, create csv file online, sample csv generator, csv test data generator, csv with headers generator, csv generator with delimiter, generate csv from json schema, random csv generator with seed, csv file download generator, tab delimited generator, semicolon separated csv generator, rfc4180 csv generator, csv quoting escape generator, mock data csv generator, csv generator uuid email date, bulk csv rows generator, csv generator for import template, make csv for excel online
Secondary intents covered: Generate a CSV template with headers for an import, Create deterministic sample CSV data using a seed, Switch delimiters (comma/semicolon/tab/pipe) for different systems, Ensure correct CSV quoting/escaping for commas, quotes, and newlines, Download the generated CSV as a file or copy to clipboard, Produce common test fields (id sequence, emails, dates, UUIDs, prices), Quickly build small datasets for debugging parsers and ETL pipelines, Create tab-delimited data for spreadsheets and legacy imports, Validate how a consumer handles CRLF vs LF newlines

FAQ

What input format does the generator use?

You provide a JSON array of columns (each with name and type), plus the number of rows to generate.

Is the generated CSV deterministic?

Yes—using the same seed, column order, and options produces the same output for the random-like types.

How does quoting and escaping work?

Fields are quoted when needed (delimiter, quotes, or newlines) and quotes are escaped by doubling them (RFC 4180 style). You can also force “Quote all fields”.

Can I generate tab-delimited files?

Yes—choose “Tab” as the delimiter to output TSV-style data.

Does this upload my data to a server?

No. Generation runs locally in your browser and this tool does not make network requests.

What column types are supported?

seq, int, float, text, email, date, uuid, bool, price, and const.

How many rows can I generate?

The UI caps generation at 200,000 rows to stay fast and mobile-safe; for larger datasets, generate in chunks.