CSV Transformation Service
Select, filter and clean CSV columns with a recipe. The service processes rows in small groups and returns a new CSV.
How does this service process a CSV without loading it all at once?
The worker reads 5,000 rows at a time and applies row-local select, rename, cast, trim, fill, drop-missing, and filter operations. It writes the transformed CSV incrementally.
Your result
A little clarity, right here.
Choose a file and run the tool. Your result will appear here, ready to download.
Three simple steps
How to use CSV Transformation Service
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 8 MB input, 500,000 rows, 100 columns, and 10 MB output. Global sort, grouping, joins, and deduplication require the Data Cleaning Studio instead.
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.