Format & Validate
Privacy-first processing. Beautify, format, validate, and convert JSON, YAML, TOML, XML, and CSV files locally.
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Format & Beautify
YAML Formatter & Validator
Validate and beautify YAML syntax structures.
TOML Formatter & Validator
Parse, validate, and prettify TOML configuration files.
XML Formatter & Validator
Beautify, format, and parse XML documents.
HTML Formatter & Beautifier
Format and prettify HTML markup with clean indents.
CSS Formatter & Beautifier
Prettify and format CSS stylesheets for clean layouts.
Validate
Email Address Validator
Validate email syntax and run domain configuration audits.
URL Validator
Check whether a string is a well-formed absolute URL and break down its parts.
Phone Number Validator
Check a phone number against the international E.164 format.
IBAN Validator
Verify International Bank Account Numbers using the ISO 7064 mod-97 checksum.
Luhn Checksum Validator
Validate card and identifier numbers against the Luhn (mod-10) checksum algorithm.
ISBN Validator
Validate ISBN-10 and ISBN-13 book identifiers using their official checksums.
More coming soon
We are building new browser-based tools every week.
