browser_oxide 0.1.2

Stealth headless browser engine in Rust: real HTML/CSS/DOM/JS, V8 via deno_core, own BoringSSL TLS/JA4 fingerprint, no Chromium, no CDP — for anti-bot web scraping, archival, and AI agents
Documentation 
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//! Prints the canvas fingerprint data-URL length + digest for a fixed profile.
//!
//! Used to prove that a `png` crate bump does not perturb the encoded IDAT
//! bytes: run it on two checkouts and compare. The canvas fingerprint is a
//! stealth-critical output, so the PNG encoder must stay byte-stable across
//! dependency upgrades.

use browser_oxide::Page;

const CANVAS_FP_SEQUENCE_JS: &str = r#"(() => {
    const c = document.createElement('canvas');
    c.width = 200; c.height = 60;
    const ctx = c.getContext('2d');
    if (!ctx) return 'NO_CTX';
    ctx.textBaseline = 'top';
    ctx.font = '14px Arial';
    ctx.fillStyle = '#f60';
    ctx.fillRect(0, 0, 100, 30);
    ctx.fillStyle = '#069';
    ctx.fillText('browser_oxide', 2, 15);
    ctx.fillStyle = 'rgba(102, 204, 0, 0.7)';
    ctx.fillText('parity-test', 4, 17);
    ctx.beginPath();
    ctx.arc(150, 30, 12, 0, Math.PI * 2);
    ctx.fill();
    return c.toDataURL();
})()"#;

#[tokio::main(flavor = "current_thread")]
async fn main() {
    let profile = browser_oxide::stealth::chrome_148_macos();
    let mut page = Page::from_html(
        "<!DOCTYPE html><html><head></head><body></body></html>",
        Some(profile),
    )
    .await
    .expect("page");

    let data_url = page.evaluate(CANVAS_FP_SEQUENCE_JS).expect("eval");

    // Simple FNV-1a so this example carries no extra dependency and behaves
    // identically on both checkouts regardless of their sha2 version.
    let mut h: u64 = 0xcbf29ce484222325;
    for b in data_url.as_bytes() {
        h ^= *b as u64;
        h = h.wrapping_mul(0x100000001b3);
    }
    println!("len={} fnv1a={:016x}", data_url.len(), h);
}