Data & Formatting
Data Validator
Validate JSON, XML, CSV, and YAML data formats
Validate JSON, XML, CSV, and YAML in one place and catch syntax errors before they break your pipeline. Paste a document, pick its format, and get a clear pass/fail with the location of any problem, ideal for checking config files and data exports quickly.
Runs 100% in your browser · no upload, no tracking, no ads
How to use Data Validator
- Paste your data into the input.
- Select the format to validate against (JSON, XML, CSV, or YAML).
- Run the check to see whether it's well-formed.
- Read any error details and fix the highlighted issue.
Frequently asked questions
Which formats can it validate?
JSON, XML, CSV, and YAML, the four formats most commonly used for configuration and data exchange.
Does it check structure or just syntax?
It verifies that the document is well-formed for its format. That catches the most common breakages like unbalanced brackets, bad indentation, or malformed rows.
Is my data kept private?
Yes. Validation runs in your browser and nothing you paste is uploaded.
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