Generators & Utilities

This is the generators hub: tools that create something new rather than transform existing text. Build a custom QR code with your own logo and colors, generate a cryptographically strong password with the Web Crypto API, or produce MD5, SHA-1, and SHA-256 hashes for file verification. The UUID generator covers v4, v1, ULID, and NanoID formats for database keys, while the JWT decoder inspects token headers, payloads, and expiry without sending anything to a server. Barcode generation supports the standard retail and shipping formats, lorem ipsum fills mockups with realistic placeholder text, and the placeholder image and LQIP generators produce lightweight preview assets for web design. Finish with the accessibility contrast simulator to check that your color choices meet WCAG guidelines before you ship. All generation happens locally — nothing is logged or stored.

Custom QR Code Generator

Build a custom QR code in seconds: pick a type, add your logo, choose colors and dot shapes, then download as PNG, SVG or print-ready PDF. Everything runs in your browser — nothing is uploaded to our servers.

Password Generator

Create strong, secure random passwords with customizable options. Choose length, include uppercase, lowercase, numbers, and special characters.

Password Strength Checker

Check how strong your password really is: entropy, character variety, common-password detection and realistic crack-time estimates, computed entirely in your browser.

Hash Generator

Instantly generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from any text — all five algorithms simultaneously, 100% in your browser.

File Hash Checksum Verifier

Compute the MD5, SHA-1, SHA-256 and SHA-512 checksum of any file and verify it against a published hash — entirely in your browser. Files are never uploaded to a server.

UUID Generator

Generate UUID v4, UUID v1, ULID, and NanoID instantly in your browser — up to 100 IDs at once. 100% client-side, no data sent to server.