Secure Generators for Developers
Create passwords, encryption keys, UUIDs, hashes, signed JWTs and QR codes using your browser's cryptographically secure random number generator, plus lorem ipsum placeholder text for layouts. Nothing you generate is sent or stored anywhere.
Password Generator
Create strong, secure passwords with customizable length and character sets.
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JWT Token Generator
Create signed JWT tokens with custom payloads, choose algorithm (HS256/384/512), and provide your secret key.
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UUID / GUID Generator
Generate cryptographically secure UUIDs (v4) in standard, hyphen-free, uppercase, or braced GUID formats. Bulk generation up to 1,000.
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SHA-256 Hash Generator
Compute SHA-1, SHA-256, SHA-384, and SHA-512 cryptographic hashes from any text using the Web Crypto API. All processing stays in your browser.
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QR Code Generator
Generate a QR code from any text or URL. Customize colors, error correction, and quiet-zone margin, then download as PNG or SVG, copy the image, or share directly from your browser. Generation history saved locally.
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Secret Key Generator
Generate cryptographically-secure keys and tokens for AES-128/192/256, HMAC, JWT, OAuth client secrets, session cookies, CSRF, and Django SECRET_KEY. Standard presets plus fully custom byte sizes — hex, Base64, Base64URL, Base58, or alphanumeric output. Bulk generation up to 100 at once.
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Random Number Generator
Pick random numbers between any minimum and maximum: one or many, with or without repeats, with decimals and sorting. Uses your browser's secure RNG.
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Random Letter Generator
Generate random letters from A to Z: choose how many, upper or lower case, vowels or consonants only, and whether letters may repeat.
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Random String Generator
Generate random strings of any length from letters, numbers, symbols or custom characters, in bulk. Secure browser randomness with an entropy estimate.
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Lorem Ipsum Generator
Generate lorem ipsum placeholder text by paragraphs, sentences or exact word count. Start with the classic "Lorem ipsum dolor sit amet" or not, and copy it as plain text or HTML paragraphs.
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