XML Validator

Check well-formed XML instantly — errors highlighted with location.

Privacy-first — format, validate and inspect data entirely in your browser. Nothing is uploaded to FreeConverter.

Paste data

Tip: drag & drop a supported file onto this area.

Upload File

Tool Options

Results

Results will appear here…

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How It Works

Inspector + formatter workflows for developers and QA.

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Paste or upload

Paste data or drop XML, YAML, JSON, CSV, SQL or TXT. Nothing is uploaded to our servers.

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Inspect & process

Format, validate or convert in your browser with structure stats and quality warnings.

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Copy or download

Export TXT, JSON, YAML, CSV, SQL, Excel or ZIP instantly.

Your data stays on your device — format, validate and convert locally.

About XML Validator

Validate XML in your browser. Get clear errors with line and column, plus root element, namespaces and encoding stats. Part of FreeConverter’s Developer Data Toolkit for XML, YAML, CSV, SQL and API payloads.

FAQs

Is my data uploaded?

No. The Developer Data Toolkit runs entirely in your browser. FreeConverter servers never receive your input.

Who is this for?

Developers, DevOps, API engineers, DBAs and QA — for formatting, validating and inspecting structured data.

Is this free?

Yes. FreeConverter.app browser developer tools are free to use.