CSV guide · Validation
Validate CSV online without uploading files
Import errors are usually small, boring, and expensive: one delimiter, one broken row, or one encoding mismatch can stop a whole workflow.
Why it happens
A CSV can look fine in a spreadsheet and still fail in a CRM, shop platform, or internal importer because each system guesses delimiters and formats differently.
How Piojo Lab detects it
Piojo Lab checks the file locally in your browser, compares common delimiters, inspects row shape, and reports findings without storing filenames or full rows.
What to do before importing
When a repair is deterministic, the tool can create a corrected copy. If a value is ambiguous, the report explains where to review it manually.
When not to automate
Do not automate changes to critical money, inventory, or customer data without checking the corrected output.
Quick questions
Does the CSV upload to a server?
No. The main analysis runs inside your browser.
Can I download a corrected CSV?
Yes, only when the repairs are safe and traceable.
Test the file before touching your system
Drop a CSV or TSV into the analyzer. The diagnosis runs in your browser, samples are truncated, and the report does not include the filename.
Open local analyzer