✅Validators
Validators check whether a number or document is formally correct: CPF, CNPJ, credit card, Pix key, IBAN, email and more. Validation checks the check digit and the format — it does not confirm that the document exists or belongs to someone. Use them to catch typos in forms and sign-ups.
235 tools
Country-aware Cellphone Validator
Validate mobile phone number for chosen country (BR, US, PT, ES, AR, MX). Country-specific rules.
Date Format Validator (ISO/Common)
Check if a date is in ISO 8601 or common formats (YYYY-MM-DD, DD/MM/YYYY, MM/DD/YYYY). Auto-detects format.
UTM Parameters Validator
Validate URL with UTM params (utm_source, medium, campaign, content, term). Checks presence, format (lowercase), no spaces.
Google Analytics ID Validator
Validate Google Analytics ID formats: UA-XXXXX-Y (universal) and G-XXXXXXXXXX (GA4). Identifies type.
Google Tag Manager ID Validator
Validate GTM ID format: GTM-XXXXXXX (7 alphanumeric chars after GTM-). For implementation audits.
Google Ads Customer ID Validator
Validate Google Ads Customer ID format: 10 digits with hyphens (XXX-XXX-XXXX). Format only — no existence check.
Meta Pixel ID Validator
Validate Meta Pixel ID format (Facebook/Instagram): 15-16 numeric digits. Checks integrity and simple checksum.
Stripe Public Key Validator
Validate Stripe public key format: pk_live_... (production) or pk_test_... (test). Checks prefix, length, alnum charset.
PayPal Client ID Validator
Validate PayPal Client ID format: 80 alphanumeric chars (prefix A for sandbox/live). Format only.
Itaú Bank Account Validator
Validate Itaú checking account format and check digit: 4-digit branch + 5-digit account + 1 DV. Self-check algorithm.
Bradesco Bank Account Validator
Validate Bradesco account format: 4-digit branch + 7-digit account + 1 DV. Checks format and bank patterns.
CEST Code Validator
Validate CEST code format (XX.XXX.XX), 7 digits. Checks if segment (XX) is in 01-28 (official).
NCM Code Validator
Validate NCM format (8 numeric digits). Decomposes into chapter (2), position (2), subposition (2), item (2). No official table check.
IBGE UF Code Validator
Validate IBGE UF code (2 digits: 11-53). Covers the 27 official codes and shows UF and name.
IBGE Municipality Code Validator
Validate IBGE municipality code format (7 digits: UF + 5 inner). Checks if first 2 are a valid UF.
CGC (Old CNPJ) Validator
Validate format and check digit of CGC (former Brazilian Tax Registry, predecessor to CNPJ). Same math rules.
CNAE Section Validator
Validate if a 7-digit CNAE code belongs to a section (A-U). Shows the corresponding CNAE 2.0 section.
Receipt Number Validator
Validate common receipt number formats (REC-YYYY-NNNNN or REC.NNNNN). Accepts variations with dots and dashes. Validates year.
Order Number Validator
Validate common e-commerce order number formats: ORD-XXXX, ORDER-NNNN, #N alphanumeric. Auto-detects type.
IPVA Code Validator
Validate IPVA code (Brazilian Vehicle Tax), generated from RENAVAM. Format and digits check.
Legacy RENAVAM Validator (9 digits)
Validate the old RENAVAM format (9 digits) used before 2013. For validating legacy vehicle database data.
ISBN-13 with Checksum Validator
Validate ISBN-13 (13 digits) — modern format since 2007. Includes 978/979 prefix and EAN-13 check digit.
Real ISSN Validator with Checksum
Validate ISSN (8 digits: NNNN-NNNX where X may be 0-9 or X). Format check and MOD 11 algorithm.
ISO 8601 Time Strict Validator
Strictly validate an ISO 8601 duration string (like P1Y2M10DT2H30M). Useful for APIs, scheduling, videos and any field using the ISO duration standard.
EAN-8 Checksum Validator
Validate an EAN-8 barcode (8 digits) by checking the check digit with the official algorithm. Useful for small products, retail and inventory control.
EAN-13 Checksum Validator
Validate an EAN-13 barcode (13 digits) by its official check digit. Essential for retail, inventory control and product registration.
CC Expiry Validator
Validate a credit card expiry date in MM/YY format, checking the month and whether it has not expired. Useful for payment forms and checkout flows.
RG-UF Format Validator
Validate the generic format of a Brazilian RG ID with the state (ex: 12.345.678-9/SP). Checks the number and state pattern, useful for forms and sign-ups.
RG-SP Format Validator
Validate the format of a São Paulo RG ID (8-9 digits plus check digit, including X). Useful for checking documents in forms and sign-ups.
RG-RJ Format Validator
Validate the format of a Rio de Janeiro RG ID (8 digits plus check digit). Useful for checking documents in forms and sign-ups.
RG-MG Format Validator
Validate the format of a Minas Gerais RG ID (9 digits plus an alphanumeric check digit). Useful for checking documents in forms and sign-ups.
PIS Format Validator
Validate a Brazilian PIS/PASEP number (11 digits) by checking its verification digit with the official algorithm. Useful for HR and payroll records.
CEI Format Validator
Validate the format of a Brazilian CEI number (12 digits), used by construction sites and employers without a CNPJ. Check the number in labor records.
CNAE Format Validator
Validate the format of a Brazilian CNAE 2.3 code (7 digits, e.g. 6201-5/00), the national classification of economic activities. Useful for business setup.
CEP to State (UF) Validator
Validate a Brazilian ZIP code (CEP) and find the matching state (UF) from the official postal ranges. Useful for address forms, sign-ups and shipping.
ICMS Rate Validator
Validate an ICMS tax rate as a percentage, within the typical range used by Brazilian states. Useful for issuing invoices and tax checking.
CBO Format Validator
Validate the format of a Brazilian CBO code (Classification of Occupations, 6 digits). Useful for HR, payroll, eSocial and employee registration.
CNPJ Base/Branch Validator
Validate the base (8 digits) and branch (4 digits) of a Brazilian CNPJ, without the check digit. Useful for spotting headquarters, branches and corporate groups.
CPF + Issue Date Validator
Validate the extended CPF format with a date (CPF + DDMMAAAA), used in some government files and layouts. Checks the number pattern only, not the check digit.
FEBRABAN Bank Code Validator
Validate a Brazilian bank code in the FEBRABAN standard (3 digits, e.g. 001 Banco do Brasil, 341 Itaú). Useful for bank slips, transfers and account records.
Bank Branch Validator
Validate the format of a Brazilian bank branch number (4 digits, with an optional check digit). Useful for sign-ups, bank slips and checking banking data.
Japan Postal Validator
Validate the format of a Japanese postal code (〒NNN-NNNN). Useful for forms, e-commerce and international shipping to customers in Japan.
UK Postcode Validator
Validate the format of a UK postcode, such as SW1A 1AA. Useful for forms, e-commerce and sign-ups that serve customers in the United Kingdom.
France Postal Validator
Validate the format of a French postal code (5 digits). Useful for forms, e-commerce and international shipping to customers in France.
Germany Postal Validator
Validate the format of a German postal code (PLZ, 5 digits). Useful for forms, e-commerce and international shipping to customers in Germany.
Canada Postal Validator
Validate the format of a Canadian postal code (A1A 1A1 pattern, alternating letter and digit). Useful for forms, e-commerce and shipping to Canadian customers.
US ZIP Validator
Validate the format of a US ZIP code, in 5-digit or ZIP+4 form (12345-6789). Great for forms, e-commerce and sign-ups in the United States.
US Passport Format Validator
Validate the format of a US passport number (9 alphanumeric characters). Useful for travel forms, bookings and international sign-ups.
US SSN Format Validator
Validate the format of a US SSN (Social Security Number) in the 3-2-4 digit pattern. Useful for forms, sign-ups and data validation in the United States.
US ITIN Format Validator
Validate the format of a US ITIN (Individual Taxpayer Identification Number), in the 9XX-XX-XXXX pattern. Useful for taxes and non-resident records in the US.
US EIN Format Validator
Validate the format of a US EIN (Employer Identification Number), in the XX-XXXXXXX pattern. Useful for companies, taxes and business records in the US.
Canada SIN Format Validator
Validate the format of a Canadian SIN (Social Insurance Number) in the 3-3-3 digit pattern. Useful for forms, sign-ups and data validation in Canada.
SWIFT/BIC Code Validator
Validate the format of a bank SWIFT/BIC code (8 or 11 characters) used in international transfers. Check the bank code before sending money abroad.
UK VAT Number Validator
Validate the format of a UK VAT number (GB + 9 digits). Check the tax registration of British companies before invoicing or trading.
German VAT Number Validator
Validate the format of a German VAT number (USt-IdNr.: DE + 9 digits). Check the tax registration of German companies before invoicing or trading.
French VAT Number Validator
Validate the format of a French VAT number (TVA: FR + 11 characters). Check the tax registration of French companies before invoicing or trading.
Italian VAT Number Validator
Validate the format of an Italian VAT number (Partita IVA: IT + 11 digits). Check the tax registration of Italian companies before invoicing or trading.
Spanish VAT Number Validator
Validate the format of a Spanish VAT number (NIF/CIF: ES + 9 characters). Check the tax registration of Spanish companies and freelancers before invoicing.
Portuguese NIF/VAT Validator
Validate the Portuguese NIF/NIPC tax number (9 digits) using the official check digit. Verify the tax ID of individuals and companies in Portugal.
US TIN Format Validator
Validate the format of a US TIN, either an SSN (individuals) or EIN (businesses). Check American tax identification numbers in your records.