Generator Tools
Free online generators for UUIDs, QR codes, barcodes, passwords, and more
Generating identifiers, codes, and placeholder content is a daily task for developers, designers, and operations teams. The challenge is finding generators that are fast, trustworthy, and work without a login. These six tools deliver exactly that — instant output, no ads, no data collection.
The UUID Generator produces RFC 4122 v4 UUIDs in bulk using the Web Crypto API — genuinely random, not Math.random()-based fakes. The QR Code Generator creates scannable codes for URLs, WiFi credentials, contact information, and plain text, with PNG and SVG download options. The Barcode Generator outputs standard retail-compatible barcodes (Code 128, EAN-13, UPC-A) ready for print or digital use.
For password-specific security needs, see the full Security & Encoding Tools collection. For placeholder text specifically, also check the Developer Tools section.
Are generated UUIDs truly unique?
UUID v4 values are randomly generated using 122 bits of randomness from the Web Crypto API. The probability of a collision is 1 in 5.3 × 10^36 — effectively unique for all practical applications.
Can I generate QR codes for WiFi, contact info, or URLs?
The QR Code Generator supports URLs, plain text, email addresses, phone numbers, and WiFi credentials (SSID + password). Output can be downloaded as a high-resolution PNG or scalable SVG.
What barcode standards does the Barcode Generator support?
Supports Code 128, EAN-13, EAN-8, UPC-A, and other common standards — covering the most common retail, logistics, and inventory use cases.
How long can a generated password be?
The Password Generator creates passwords from 8 to 128 characters. You can include or exclude uppercase letters, lowercase letters, numbers, and symbols to meet any password policy requirement.