ua

Cross-platform User-Agent generator with best-effort installed browser detection.

This crate detects installed browsers and (when possible) uses their versions to generate realistic User-Agent strings. It supports Windows, macOS, and Linux.

Features

• Platform detection (OS + CPU arch)
• Installed browser detection (best-effort)
• User-Agent generation:
  • Chromium family: Chrome / Edge / Chromium / Brave / Opera
  • Firefox
  • Safari (best-effort only)
• Strictness modes:
  • Real: requires a detected browser version (Safari not supported)
  • BestEffort: falls back to safe defaults

Usage

use ua::{build_user_agent, UaStrictness};

let ua = build_user_agent(UaStrictness::BestEffort)?;
println!("{ua}");
# Ok::<(), ua::AgentError>(())