Start with the job in front of you
CSV files are simple until a comma appears inside a name or one row contains an extra field.
A short test is usually faster than trying to fix a large final file after the fact. Keep the original nearby, name the exported version clearly, and change one setting at a time when the result matters.
Use a small, repeatable routine
Inspect a small sample, confirm the header row and delimiter, then convert or import a copy.
The useful part of a browser tool is not simply getting an output. It is being able to reproduce the same result tomorrow, explain what changed, and notice when an input or assumption has changed.
Do one last check before sharing
Count columns in a few rows and verify dates and numbers did not become plain text unexpectedly.
If the result will be published, sent to a client, or used to make a decision, compare it with the source rather than trusting a filename or a successful download message.
Practical checklist
- Keep the original input until the output is checked.
- Test the workflow on a small sample first.
- Use clear names for exported versions.
- Review the result in the app where it will actually be used.
- Record important settings or assumptions.