Free Tools for Developers
Generators, converters and utilities for everyday use.
Brazilian Documents
CPF, CNPJ, RG and other Brazilian document generators for testing
Certificate Generator
Generate certificate numbers (birth, marriage) for testing
→CNH Generator
Generate valid CNH numbers for testing
→CNPJ Generator
Generate valid CNPJs for testing and development (numeric and alphanumeric 2026)
→CPF Generator
Generate valid CPFs for testing and development
→Passport Generator
Generate valid passport numbers for testing
→PIS Generator
Generate valid PIS/PASEP numbers for testing
→RENAVAM Generator
Generate valid RENAVAM numbers for testing
→RG Generator
Generate valid RG numbers for testing
→State Registration
Generate valid State Registration numbers for testing
→Voter ID
Generate valid Voter ID numbers for testing
→DevOps and SEO
SEO Analyzer, WHOIS lookup and cloud cost calculator
Cloud Costs
Estimate cloud infrastructure costs from your Terraform, Docker or Kubernetes
→DNS Propagation
Check your domain's DNS propagation across global servers
→JSON-LD Validator
Validate JSON-LD structured data from your website
→Robots.txt Validator
Validate your website's robots.txt file
→Security Scanner
Complete web security analysis: DNS, SSL, headers, cookies and more
→SEO Analyzer
Run a free online SEO test — meta tags, Schema.org, Core Web Vitals, SSL and more
→Sitemap Validator
Validate your website's sitemap.xml file
→WHOIS Lookup
Look up domain registration information
→Encoding and Conversion
Base64, URL encoding, JWT, JSON/YAML and UUID
Base64
Encode and decode text in Base64
→Byte Converter
Convert between Bytes, KB, MB, GB, TB, PB, EB, ZB and YB
→JSON/CSV Converter
Convert JSON to CSV and vice-versa instantly
→JSON/YAML Converter
Convert JSON to YAML and vice-versa instantly
→JWT Decoder
Decode JWT tokens and view header, payload and expiration
→URL Encoder
Encode and decode URLs online instantly
→UUID
Generate unique UUIDs v4 instantly
→Formatters
Format and minify CSS, HTML, JS, SQL and GraphQL
CSS Formatter
Format and minify CSS code
→GraphQL Formatter
Format GraphQL queries and schemas
→HTML Formatter
Format and minify HTML code
→JS Formatter
Format and minify JavaScript code
→JSON Formatter
Validate and format your JSON with custom indentation
→SQL Formatter
Format SQL queries
→Images
Photo, avatar, QR code and placeholder generators
Avatars
Generate unique avatars for profiles
→Image ↔ Base64
Convert images to Base64 and vice versa
→Placeholder
Generate placeholder images for layouts
→Placeholder Photos
Generate random photos for layouts and prototypes
→QR Code
Generate QR Codes for URLs, texts and more
→People and Addresses
Generate fictitious data for people, names, addresses and contacts
Address Generator
Generate fictitious Brazilian addresses
→Company Generator
Generate complete data for fictitious companies
→Complete Person
Generate complete data for a fictitious person
→Email Generator
Generate fictitious email addresses
→Name Generator
Generate random Brazilian names
→Phone Generator
Generate Brazilian phone numbers
→Regex
Test, create and explore regular expressions
Regex Builder
Create regular expressions visually
→Regex Library
Ready-made regex for common cases
→Regex Tester
Test regular expressions in real time
→Security
Password, hash and API key generators
API Key
Generate secure API keys
→Bcrypt
Generate and verify Bcrypt hashes
→Credit Card
Generate valid credit card numbers for testing with Luhn algorithm
→Hash Generator
Generate MD5, SHA-1, SHA-256 and more hashes
→Password Generator
Generate strong and secure passwords
→Password Strength
Check the strength of your password
→Text
Lorem Ipsum, character counter and text generators
Character Counter
Count characters, words and lines in text
→Lorem Ipsum
Generate Lorem Ipsum text for layouts
→Random Text
Generate random text in Portuguese
→Time and Date
Converters, calculators and date/time utilities
Age Calculator
Calculate your exact age from your birth date in years, months and days
→Date Calculator
Add or subtract days from a date
→Date Converter
Convert dates between different formats
→Date Difference
Calculate the difference between two dates in days, months and years
→Day of Week
Find out the day of the week for any date
→Holidays
Check national and optional holidays in Brazil
→Timestamp
Convert Unix timestamp to date and vice versa
→Timezone
Convert times between timezones
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