Generate random browser user-agent strings from a curated list covering Chrome, Firefox, Safari, Edge, and mobile browsers. Free to start with no signup.
Content reviewed October 2026 · About Toolzum
Parse User-Agent strings into browser, OS, device, and bot verdicts. Identify crawlers vs customers in logs — local parsing, free, no signup.
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Chrome, Firefox, Safari, and Edge on desktop, plus iPhone/iPad mobile Safari and Chrome on Android — 8 curated strings total. Opera and Firefox Mobile are not in the database; use the all/desktop/mobile filter to narrow the pool.
Web scraping, API testing, load testing, and browser compatibility testing. Random UAs help distribute requests and simulate diverse client traffic.
They mirror real browser releases (Chrome/Edge 120, Firefox 120, Safari-era mobile) with full header format: browser version, OS, and engine. The 8-string list is static — not auto-updated.
Up to 20 per batch via the count slider, with presets for 5 desktop, 5 mobile, or 10 mixed. Each line is an independent random pick from the 8-string database, so repeats within a batch are normal.
Yes. All generation runs in your browser. No data is transmitted.
User-Agent Parser
Parse User-Agent strings into browser, OS, device, and bot verdicts. Identify crawlers vs customers in logs — local parsing, free, no signup.
Random IP Generator
Generate random IPv4 and IPv6 addresses for network testing, development, and security research. Code never leaves your device — formatting and validation run locally in your browser.