Data Pipeline Previewer
See what each step in a CSV data pipeline changes. Review row counts and sample values before saving the final table.
How can I check each step of a data pipeline?
Paste CSV data and a JSON list of cleaning steps. Run the preview to see row counts and sample values after each step. Check where values change before downloading the final CSV. Start with the example if you are new to recipes.
Your result
A little clarity, right here.
Start with your own content or load the example. Your result will appear here.
Three simple steps
How to use Data Pipeline Previewer
Choose your input and adjust the options.
Review the preview and run the tool.
Download the result and keep your original.
Common questions
Good to know
Understand the result.
Keep the original.
Is this tool free, and are my files uploaded?
This tool is free with no account required. When you run the tool, your input goes to a separate processing service. Temporary files are deleted when the job ends. You can download the result to your device.
What are the limits and details?
Up to 50,000 rows, 100 columns, and 20 explicit recipe steps. Available operations are select, rename, cast, trim, fill, drop-missing, filter, sort, deduplicate, group, and left join. Arbitrary code is not executed.
Limits: one file up to 8 MB; 500,000 characters per text field. One job runs at a time on the worker, with a two-minute limit.