Chrome 152 reference
Implements observable Chrome behavior, aligned with Chrome 152.
Public beta · v0.1.3Run the web.
Run the web.
Skip the rendering.
The website’s own JavaScript. Browser state. No Chromium.
Built for automation.
// Start Mimic separately:
// ./mimic --listen 127.0.0.1:9222 --chrome 152
import { chromium } from "playwright-core";
const browser = await chromium.connectOverCDP(
"http://127.0.0.1:9222"
);
const context = browser.contexts()[0];
const page = await context.newPage();
await page.goto("https://example.com/");Quickstart
Get up and running locally in a few minutes.
mimic --listen 127.0.0.1:9222One event loop per Page
Each Page runs in a single event loop, matching browser semantics.
No GPU required
Runs on CPU. No GPU or system browser installation needed.
Working browser behavior
Use the tools you already know.
Connect stock Playwright or Puppeteer clients over CDP. Mimic owns the runtime; your automation keeps its familiar interface.
Navigate and inspect
Load HTTP pages, evaluate JavaScript, query the DOM, and observe lifecycle and network events.
Interact with application state
Use locators, fill form controls, click actions, work across frames and Shadow DOM, and observe popup pages.
Run concurrent Pages
Each Page owns its runtime and event loop. BrowserContexts isolate profiles, cookies, and connection pools.
Verified checkpoint38/38 checks
Two project regression suites cover navigation, locators, forms, fetch/XHR, frames, Shadow DOM, popups, redirects, cookies, history, multi-page state, and network observation.
Mimic’s own compatibility checks, not the official Playwright test suite.Measured, not assumed
A lighter runtime for supported workloads.
Fresh Windows build measured September 14, 2026 against Chrome 152.0.7977.82 in controlled local fixtures.
These results describe specific fixtures and this machine, not arbitrary websites or production cost. Some workloads still favor Chrome. Read the methodology →
Configure once
Describe the environment. Then automate.
A versioned profile controls browser-visible screen, locale, hardware, preferences, networking, and supported capabilities before the first page loads.
- Validated JSON Schema
- Independent profiles per BrowserContext
- Native SOCKS5, HTTP, and HTTPS proxies
{
"schemaVersion": 1,
"baseProfile": "chrome-152-windows-x64-headful-controlled-v1",
"hardware": { "logicalProcessors": 8, "deviceMemoryGB": 8 },
"locale": {
"languages": ["en-US", "en"],
"timezone": "America/New_York",
"intlLocale": "en-US"
},
"preferences": { "colorScheme": "dark" }
}Explicit boundaries
Know when to use a full browser.
Mimic is a public beta and implements a subset of browser APIs and CDP. It is designed for supported execution workflows—not visual output or universal Chrome compatibility.
No screenshots or rendered PDFsNo complete CSS layoutNo Canvas/WebGL pixels or videoNot a sandbox for hostile codeWindows & Linux amd64 onlyTrusted local CDP clients only
Review compatibility boundaries →Public beta
Download v0.1.3 ↓Let the website do the work.
Download Mimic, start the local runtime, and connect your automation.