Codes and Hashes
Create QR Codes, barcodes, secure passwords and hashes
Available Tools
QR Code Generator
Create custom QR Codes for free. Adjust colors, size and download in PNG or SVG.
Barcode Generator
Generate barcodes in various formats: EAN-13, Code 128, UPC and more.
UUID/GUID Generator
Generate unique and valid UUIDs/GUIDs. Support for UUID v1, v4 and v5.
Strong Password Generator
Generate strong and secure passwords with letters, numbers and symbols. Customize length and complexity.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes. Validate file integrity.
Base64 Encoder/Decoder
Encode and decode strings in Base64. Support for texts and files.
What are QR Codes and barcodes?
QR Codes (Quick Response Codes) and barcodes are visual encoding systems that allow storing information in a machine-readable format. QR Codes can contain URLs, text, contact information and much more, being widely used in marketing, payments, and authentication.
How to create secure passwords?
A strong password should combine uppercase and lowercase letters, numbers, and special symbols. The ideal length is at least 12 characters. Avoid using personal information, dictionary words, or obvious sequences. Our tool generates random passwords that meet all these security criteria.
What are cryptographic hashes used for?
Hashes like MD5, SHA-256, and SHA-512 are mathematical functions that transform any data into a fixed-size string. They are widely used to verify file integrity, securely store passwords, and in digital signatures. Important: MD5 and SHA-1 are no longer recommended for security purposes.