Categories — Browse Tool Plaza by category—A2A agent

Generate European VAT Number

Create structurally valid EU VAT numbers for invoicing demos, ERP tests, and signup form fixtures.

validategeneratevat-numberen

Generate random European IBAN

Create structurally valid sample IBANs by country for payment-form testing, banking demos, and QA fixtures — not real issued account numbers.

ibanvalidategenerateen

Validate European VAT Number

Verify European VAT identification numbers against country format rules.

validategeneratevat-numberen

Validate IBAN

Paste an IBAN and validate it online

ibanvalidategenerateen

Validate IBAN by country

Choose the expected country and verify whether the IBAN is structurally valid for that country.

ibanvalidategenerateen

Calculate Italian tax code from personal data

Derive an Italian fiscal code from personal data, birthplace, and gender.

validategeneratefiscal-codeen

Calculate Luhn check digit

Compute the Luhn mod-10 check digit for a numeric identifier prefix

checksumvalidateluhn-check-digiten

Generate Italian tax code

Create random codice fiscale profiles for onboarding demos, QA fixtures, and Italian form testing.

validategeneratefiscal-codeen

Generate Luhn number

Build numeric identifiers with a valid Luhn check digit for test cards and identifiers.

checksumvalidateluhn-generateen

Password strength

Estimate password strength with entropy-based scoring in your browser

passwordvalidateen

Valid CSV

Validate CSV spreadsheets with configurable delimiter and header row options.

validatecsven

Valid HTML

Check HTML markup for well-formed structure and common syntax issues.

validatehtmlen

Valid JSON

Parse and validate JSON data for syntax errors with clear error feedback.

validatejsonen

Valid SVG

Check SVG markup for XML syntax, tag structure, and common vector-graphic mistakes before shipping assets.

validatesvgen

Valid XML

Validate XML documents for proper syntax, nesting, and tag balance.

validatexmlen

Valid YAML

Check YAML documents for indentation, syntax, and parsing errors.

validateyamlen

Validate Italian tax code

Check whether an Italian codice fiscale matches formal checksum and format rules.

validategeneratefiscal-codeen

Validate Luhn checksum

Validate credit card and identifier numbers using the Luhn mod-10 algorithm.

checksumvalidateluhn-validateen

Validate MOD-97 checksum

Check whether a numeric string passes the ISO 7064 MOD-97 control test.

checksumvalidatemod-97en

Tools tagged "validate"

Browse Tool Plaza by category—A2A agent skills for developers, everyday calculators, media tools, leisure helpers, and health estimators.

Tools tagged "validate"

Browse Tool Plaza by category—A2A agent skills for developers, everyday calculators, media tools, leisure helpers, and health estimators.

Generate European VAT Number

Generate random European IBAN

Validate European VAT Number

Validate IBAN

Validate IBAN by country

Calculate Italian tax code from personal data

Calculate Luhn check digit

Generate Italian tax code

Generate Luhn number

Password strength

Valid CSV

Valid HTML

Valid JSON

Valid SVG

Valid XML

Valid YAML

Validate Italian tax code

Validate Luhn checksum

Validate MOD-97 checksum

Generate European VAT Number

Generate random European IBAN

Validate European VAT Number

Validate IBAN

Validate IBAN by country

Calculate Italian tax code from personal data

Calculate Luhn check digit

Generate Italian tax code

Generate Luhn number

Password strength

Valid CSV

Valid HTML

Valid JSON

Valid SVG

Valid XML

Valid YAML

Validate Italian tax code

Validate Luhn checksum

Validate MOD-97 checksum