Validate CSV Structure & Schema

About This Spell

With a wizard's whisper, Validate CSV files for structural problems (inconsistent column counts) and optional schema/type rules. You can auto-detect the delimiter/quote and specify simple types for columns.

How to Cast the Spell:

Use your magic to Paste CSV data.
Use your magic to Optionally enable auto-detect or set delimiter/quote.
Use your magic to Provide schema rules (int, float, bool, str, date:%Y-%m-%d).
Use your magic to Click Validate to see issues.

What is CSV Validator?

CSV Validator is a free data wrangler from WizardOfAZ. Use it to validate CSV files and catch issues early as part of your analytics and reporting, without installing extra software.

Because everything happens locally in your browser, your spreadsheets stay under your control while you validate CSV files and catch issues early.

Popular ways to use CSV Validator

Streamline analytics and reporting by using CSV Validator to validate CSV files and catch issues early.
Share deliverables faster—processed tabular datasets are ready for download in seconds.
Combine CSV Validator with other WizardOfAZ tools to keep complex workflows in one browser tab.

Examples and workflow tips

Upload a sample file, cast the spell to validate CSV files and catch issues early, and download the processed result instantly.
Bookmark the CSV Validator in your browser so recurring tasks stay only one click away.
Share the spell with teammates who need a quick, no-install way to validate CSV files and catch issues early.

Frequently asked questions

Is the CSV Validator secure?

Yes. The CSV Validator runs entirely in your browser, which means your spreadsheets never leave your device.

What can I do with the CSV Validator?

You can analytics and reporting by processing tabular datasets without uploading them to an external service.

Can I use CSV Validator on mobile?

Yes. WizardOfAZ tools are responsive, so you can launch the spell on desktops, tablets, or phones without installing extra apps.

Related tools to explore

Expand your toolkit with other WizardOfAZ spells that complement CSV Validator:

CSV Deduplicator — Use it to work with CSV files using flexible options.
CSV Filter — Use it to work with CSV files using flexible options.
CSV Merge Join — Use it to merge tabular datasets into a single download.