Online Dataset Generator
Create structured test data in CSV, JSON, XML, YAML, XLSX, or VCF format. Choose your fields, value types, row count, and output options, then generate data directly in your browser.
CSV is selected by default. Choose another format above to update the generator and guidance.
| Field name | Type | Options |
|---|
Also updates available contact fields
Output size
Max 25
Max 10
Max 10
Quick use cases
Create spreadsheet fixtures for import testing. Test ETL pipelines with controlled rows and columns. Check CSV parsers with different delimiters and field types.
Common generator issues
The selected delimiter does not match the importer settings. Text containing delimiters or quotes is parsed incorrectly. Headers or row lengths do not match the expected schema.
Generator feature notes
- Choose a preset delimiter or enter a custom separator.
- Set a field name and data type for each column.
- Generate a header row followed by flat data rows.
Feature boundaries
Generate up to 5,000 rows per file. Use up to 25 columns and 10 files per run. Large datasets may take longer to generate and display.
Related tools
Sample output structure
id,name,email
1,John,john@example.comDataset generator FAQ
Can I choose a custom CSV delimiter?
Yes. Choose a preset such as comma, semicolon, colon, tab, space, or pipe, or enter a custom separator.
Can I generate multiple CSV files?
Yes. Use the file-count option to generate up to 10 CSV files in one run.
What structure does the CSV output use?
The first row contains column headers, followed by one flat data row for each generated record.