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fingerprinting capabilities. Written in TypeScript with zero runtime dependencies, supporting both Node.js and browser environments.\n\n[DeviceUUID Demo](https://biggora.github.io/device-uuid/)\n\n## Features\n\n- 🚀 Zero runtime dependencies\n- 📦 Multiple module formats (ESM, CJS, IIFE)\n- 🔍 Comprehensive device detection (OS, browser, platform)\n- 📱 Mobile, tablet, and desktop detection\n- 🤖 Bot detection (18 known bot patterns)\n- 📺 Smart TV and gaming console detection\n- 🎨 Advanced fingerprinting (Canvas, WebGL, Audio, Fonts)\n- ⚡ Dual API: Synchronous and Asynchronous\n- 🔒 Privacy-by-design (fingerprinting is opt-in)\n- 🎨 TypeScript support with full type definitions\n- 🌐 Browser and Node.js compatible\n\n## Installation\n\n```bash\nnpm install device-uuid\n```\n\n## Quick Start\n\n### Node.js / Module Bundlers\n\n```typescript\nimport { DeviceUUID } from 'device-uuid';\n\n// Basic synchronous UUID (user agent + screen properties)\nconst device = new DeviceUUID();\nconst uuid = device.get();\nconsole.log(uuid); // e9dc90ac-d03d-4f01-a7bb-873e14556d8e\n\n// Get device information\nconst info = device.parse();\nconsole.log(info.browser); // Chrome\nconsole.log(info.os); // Windows 11\nconsole.log(info.isMobile); // false\n```\n\n### Browser (via `\n\n```\n\n### React\n\n```tsx\n'use client';\n\nimport { useEffect, useState } from 'react';\nimport { DeviceUUID } from 'device-uuid';\n\nexport function DeviceInfo() {\n const [uuid, setUuid] = useState(null);\n\n useEffect(() => {\n const device = new DeviceUUID();\n setUuid(device.get());\n }, []);\n\n if (!uuid) return

Loading...

;\n\n return

Device UUID: {uuid}

;\n}\n```\n\n## API Reference\n\n### Synchronous API\n\nBasic device identification using user agent and screen properties.\n\n#### `get(customData?: string): string`\n\nGenerate a UUID based on device characteristics.\n\n```typescript\nconst device = new DeviceUUID();\nconst uuid = device.get();\n```\n\n#### `parse(source?: string): AgentInfo`\n\nParse user agent string and return device information.\n\n```typescript\nconst info = device.parse();\nconsole.log(info.browser); // 'Chrome'\nconsole.log(info.os); // 'Windows 11'\nconsole.log(info.isMobile); // false\n```\n\n#### `getComponents(): Record`\n\nGet individual fingerprint components.\n\n```typescript\nconst components = device.getComponents();\nconsole.log(components);\n// { userAgent: '...', screen: '1920x1080', language: 'en-US', ... }\n```\n\n### Asynchronous API\n\nAdvanced fingerprinting with browser characteristics. **All methods are opt-in for privacy.**\n\n#### `getAsync(options?: FingerprintOptions): Promise`\n\nGenerate a UUID with advanced fingerprinting methods.\n\n```typescript\n// Enable specific fingerprinting methods\nconst uuid = await device.getAsync({\n canvas: true,\n webgl: true,\n audio: true,\n fonts: true,\n timeout: 5000,\n});\n\n// Or use a preset\nconst uuid = await device.getAsync({ preset: 'standard' });\n```\n\n#### `getDetailedAsync(options?: FingerprintOptions): Promise`\n\nGenerate UUID and return detailed fingerprint information.\n\n```typescript\nconst details = await device.getDetailedAsync({ preset: 'standard' });\n\nconsole.log(details.uuid); // Generated UUID\nconsole.log(details.components); // Individual components\nconsole.log(details.options); // Options used\nconsole.log(details.duration); // Time taken (ms)\n```\n\n### Static Methods\n\n#### `DeviceUUID.isFeatureSupported(feature: FingerprintFeature): boolean`\n\nCheck if a fingerprinting feature is supported in the current environment.\n\n```typescript\nimport { DeviceUUID } from 'device-uuid';\n\nDeviceUUID.isFeatureSupported('canvas'); // true/false\nDeviceUUID.isFeatureSupported('webgl'); // true/false\nDeviceUUID.isFeatureSupported('audio'); // true/false\n```\n\n## Configuration Options\n\n### Fingerprint Presets\n\nPresets provide pre-configured options for common use cases:\n\n```typescript\n// Minimal - basic device info only (no advanced fingerprinting)\nawait device.getAsync({ preset: 'minimal' });\n\n// Standard - canvas and WebGL (good uniqueness)\nawait device.getAsync({ preset: 'standard' });\n\n// Comprehensive - all fingerprinting methods\nawait device.getAsync({ preset: 'comprehensive' });\n```\n\n### Custom Options\n\nFine-grained control over fingerprinting methods:\n\n```typescript\ninterface FingerprintOptions {\n // Fingerprinting methods (all opt-in, default: false)\n canvas?: boolean;\n webgl?: boolean;\n audio?: boolean;\n fonts?: boolean | string[]; // true for default list, or custom font list\n mediaDevices?: boolean;\n networkInfo?: boolean;\n timezone?: boolean;\n incognitoDetection?: boolean;\n\n // Timeouts\n timeout?: number; // Global timeout (default: 5000ms)\n methodTimeout?: number; // Per-method timeout (default: 1000ms)\n\n // Preset (overrides individual options)\n preset?: 'minimal' | 'standard' | 'comprehensive';\n}\n```\n\n#### Font Detection\n\n```typescript\n// Use default font list\nawait device.getAsync({ fonts: true });\n\n// Use custom font list\nawait device.getAsync({\n fonts: ['Arial', 'Times New Roman', 'Helvetica', 'Courier New'],\n});\n```\n\n## Usage Examples\n\n### Basic Device Detection\n\n```typescript\nimport { DeviceUUID } from 'device-uuid';\n\nconst device = new DeviceUUID();\nconst info = device.parse();\n\nif (info.isMobile) {\n console.log('Mobile device detected');\n} else if (info.isTablet) {\n console.log('Tablet device detected');\n} else {\n console.log('Desktop device detected');\n}\n\nconsole.log(`Browser: ${info.browser} ${info.version}`);\nconsole.log(`OS: ${info.os}`);\nconsole.log(`Platform: ${info.platform}`);\n```\n\n### Advanced Fingerprinting\n\n```typescript\nimport { DeviceUUID } from 'device-uuid';\n\nconst device = new DeviceUUID();\n\n// Check feature support before using\nif (DeviceUUID.isFeatureSupported('canvas')) {\n const uuid = await device.getAsync({\n canvas: true,\n webgl: true,\n timeout: 5000,\n });\n console.log('Advanced UUID:', uuid);\n}\n```\n\n### Detailed Fingerprint Analysis\n\n```typescript\nimport { DeviceUUID } from 'device-uuid';\n\nconst device = new DeviceUUID();\n\nconst details = await device.getDetailedAsync({\n preset: 'standard',\n});\n\nconsole.log('UUID:', details.uuid);\nconsole.log('Components:', details.components);\nconsole.log('Duration:', details.duration, 'ms');\n\n// Check which components were used\nfor (const [key, value] of Object.entries(details.components)) {\n if (value !== null) {\n console.log(`${key}: ${value}`);\n }\n}\n```\n\n### Custom User Agent Parsing\n\n```typescript\nimport { DeviceUUID } from 'device-uuid';\n\nconst device = new DeviceUUID();\n\n// Parse a custom user agent string\nconst customUA = 'Mozilla/5.0 (iPhone; CPU iPhone OS 17_2 like Mac OS X) AppleWebKit/605.1.15';\nconst info = device.parse(customUA);\n\nconsole.log(info.isiPhone); // true\nconsole.log(info.os); // iOS\nconsole.log(info.browser); // Safari\n```\n\n### Error Handling\n\n```typescript\nimport { DeviceUUID } from 'device-uuid';\n\nconst device = new DeviceUUID();\n\ntry {\n const uuid = await device.getAsync({\n preset: 'comprehensive',\n timeout: 10000,\n });\n console.log('UUID:', uuid);\n} catch (error) {\n console.error('Fingerprinting failed:', error);\n // Fall back to basic UUID\n const basicUuid = device.get();\n console.log('Basic UUID:', basicUuid);\n}\n```\n\n## AgentInfo Interface\n\nThe `parse()` method returns an `AgentInfo` object with the following properties:\n\n### Device Type Flags\n\n| Property | Type | Description |\n| --------------- | ----------------- | --------------------- |\n| `isDesktop` | boolean | Desktop computer |\n| `isMobile` | boolean | Mobile phone |\n| `isTablet` | boolean | Tablet device |\n| `isBot` | boolean \\| string | Bot/crawler detection |\n| `isSmartTV` | boolean | Smart TV device |\n| `isTouchScreen` | boolean | Touch screen support |\n\n### Browser Information\n\n| Property | Type | Description |\n| ----------- | ------- | -------------------------------------------------- |\n| `browser` | string | Browser name (Chrome, Firefox, Safari, Edge, etc.) |\n| `version` | string | Browser version |\n| `isChrome` | boolean | Chrome browser |\n| `isFirefox` | boolean | Firefox browser |\n| `isSafari` | boolean | Safari browser |\n| `isEdge` | boolean | Edge browser |\n| `isOpera` | boolean | Opera browser |\n| `isIE` | boolean | Internet Explorer |\n\n### Operating System\n\n| Property | Type | Description |\n| ------------ | ------- | --------------------------------- |\n| `os` | string | Operating system name and version |\n| `isWindows` | boolean | Windows OS |\n| `isMac` | boolean | macOS |\n| `isLinux` | boolean | Linux OS |\n| `isLinux64` | boolean | 64-bit Linux |\n| `isChromeOS` | boolean | Chrome OS |\n\n### Mobile Platforms\n\n| Property | Type | Description |\n| ----------------- | ------- | ----------------- |\n| `isAndroid` | boolean | Android platform |\n| `isAndroidTablet` | boolean | Android tablet |\n| `isiPhone` | boolean | iPhone |\n| `isiPad` | boolean | iPad |\n| `isiPod` | boolean | iPod touch |\n| `isSamsung` | boolean | Samsung device |\n| `isBlackberry` | boolean | Blackberry device |\n\n### Device Properties\n\n| Property | Type | Description |\n| ------------ | ---------------- | --------------------------------- |\n| `platform` | string | Platform name |\n| `language` | string | Browser language |\n| `colorDepth` | number | Screen color depth |\n| `pixelDepth` | number | Screen pixel depth |\n| `resolution` | [number, number] | Screen resolution [width, height] |\n| `cpuCores` | number | Number of CPU cores |\n| `source` | string | Original user agent string |\n\n### Utility Functions\n\n| Method | Description |\n| -------------------------------- | --------------------- |\n| `hashMD5(value: string): string` | Generate MD5 hash |\n| `hashInt(value: string): number` | Generate integer hash |\n\n## Type Exports\n\nThe library exports the following TypeScript types:\n\n```typescript\nimport type {\n DeviceUUIDOptions,\n AgentInfo,\n FingerprintOptions,\n FingerprintDetails,\n FingerprintComponent,\n FingerprintPreset,\n FingerprintFeature,\n} from 'device-uuid';\n```\n\n## Bundle Sizes\n\n| Format | Size |\n| ------------------------ | ------------------- |\n| ESM | ~31 KB (unminified) |\n| CJS | ~31 KB (unminified) |\n| Browser (IIFE) | ~34 KB (unminified) |\n| Browser (IIFE, minified) | ~19 KB |\n\n## Browser Support\n\n- Chrome / Chromium (all versions)\n- Firefox (all versions)\n- Safari (all versions)\n- Edge (Chromium and Legacy)\n- Opera (all versions)\n- Internet Explorer 11+\n\n## Privacy Considerations\n\nThis library follows a **privacy-by-design** approach:\n\n1. **Opt-in Default**: All advanced fingerprinting methods are **disabled by default**\n2. **User Control**: Explicit configuration required for each fingerprinting method\n3. **Timeout Protection**: All async operations have configurable timeouts\n4. **Error Handling**: Graceful fallbacks when methods fail or are blocked\n5. **No Data Exfiltration**: All processing happens locally; nothing is sent to external servers\n\nWhen using advanced fingerprinting:\n\n- Always inform users about data collection\n- Obtain appropriate consent when required\n- Provide a way to opt-out\n- Consider using the `minimal` preset for basic identification only\n\n## License\n\n[MIT](LICENSE) © Aleksejs Gordejevs and contributors.\n","readmeFilename":"README.md"}