Developer · Crawler · QA tool

User-Agent Generator

Choose an OS, browser, and version to instantly assemble a spec-accurate User-Agent string. Bulk generation, bot presets, and reverse parsing all run inside your browser and are never sent to a server.

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Generated Result

Popular Combination Presets

Fill in frequently used browser · OS combinations in one click.

Bulk Generation

Randomly generate as many valid combinations as you specify (up to 100).

Bot · Crawler User-Agents

Real User-Agents for search engines, social, AI, SEO, and tools. Click a row to fill it into the result box above.

Reference

Take a closer look at browsers, OSes, bots, and guides.

User-Agents by BrowserA summary of the User-Agent structure and representative examples for Chrome, Firefox, Safari, Edge, Opera, and Samsung Internet. User-Agents by Operating SystemThe platform tokens and examples by which Windows, macOS, Linux, Android, and iOS are identified in the User-Agent. Bot · Crawler DirectoryThe real User-Agents of search engine, social, AI, SEO, and tool bots, gathered by category. User-Agent GuideA collection of short documents summarizing the concept, structure, and use of the User-Agent.