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

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

Privacy-first processing every time

WizardOfAZ tools do not need registrations, no accounts or sign-up required. Totally Free.

Local only: There are many tools like Text tools, some CSV tools, List tools etc. that are only processed on your browser. Data and Documents are transformed on your machine, so nothing is sent to our servers.
Transparent progress: Watch the processing banner appear as soon as work begins and know exactly when it completes.
Clear safeguards: Every tool links directly to our privacy policy and has been reviewed for accessibility.
Secure Process: Some Tools need to be processed in the servers so the Old Wizard processes your files securely on our servers, keeping them for up to 1 hour so your tool can finish its work—after that, they are automatically deleted after 1 Hour.

10K+ private jobs cast in the last 12 months

“The wizard does everything I need. I can merge sensitive PDFs without a second thought.”

— Morgan, legal operations lead

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.

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.

CSV Tools