What is Puppeteer?
Puppeteer is the Chrome team's Node.js automation library, controlling Chrome and Firefox over the DevTools Protocol and WebDriver BiDi. It's mature, fast, free, and a common choice for developers scripting Chrome-only scrapers, PDF generation, and headless testing, even as Playwright has pulled ahead in general test-framework adoption. Its own issue tracker documents real flakiness in waitForSelector around navigation and reconnection, and teams running it at scale end up managing browser pools, contexts, and memory by hand, but for hand-tuned, committed automation code running in CI, Puppeteer remains excellent. The comparison below is about what happens when an AI agent, not a script, does the browsing.
Is ego(lite) a good Puppeteer alternative?
For AI-agent-driven browser work, yes: it removes the script layer entirely and runs tasks in your real logged-in Chrome, making it one of the few Puppeteer alternatives built for agents rather than more scripting. For committed, deterministic automation code in CI, Puppeteer is still the better tool. Many developers use both: Puppeteer for pipelines, ego(lite) for everything they never got around to scripting.
Puppeteer vs Playwright vs Selenium: which is better?
All three are script-first automation libraries, and playwright vs puppeteer or puppeteer vs selenium usually comes down to what you're testing and in what language. Puppeteer wins when you're Chrome-only in Node and want a lean DevTools-level API. Playwright generally pulls ahead for new test suites: multi-browser coverage, auto-waiting, and a stronger test runner. Selenium vs Puppeteer is closer, and which is better, selenium or puppeteer, usually comes down to language and CI setup rather than raw capability: Selenium's edge is the W3C WebDriver standard and the widest language and legacy-browser support, at the cost of more boilerplate. ego(lite) doesn't compete in that debate at all, since it's an agent browser where an AI agent does the browsing instead of any of the three scripting it. See our ego(lite) vs Playwright and ego(lite) vs Selenium pages for those comparisons.
What about Puppeteer MCP for AI agents?
MCP wrappers around Puppeteer give an agent browser access, but every action is a separate tool round-trip through the model, and the browser is still a blank profile underneath. ego(lite) batches actions in JavaScript and inherits your real login state, so per-task token cost stays low and the agent never hits an SSO wall the wrapper can't get past.
Why do my Puppeteer selectors keep breaking?
Selectors are tied to a page's exact markup: class names, DOM order, ARIA structure. A redesign, an A/B test, or a framework upgrade on the target site changes that markup and your waitForSelector calls start timing out, often intermittently, which is exactly the kind of flakiness reported repeatedly against Puppeteer's own tracker. ego(lite)'s agent doesn't hold a fixed selector at all. It reads the current page as a Snapshot each time and reasons about what's actually there, so a redesign is something it adapts to on the next run instead of something that breaks the script.
Do I need to manage browser instances or memory with ego(lite)?
No. Scaling Puppeteer past a single script usually means standing up a pool (puppeteer-cluster, generic-pool, or your own queue) to cap concurrency before Chrome's memory use gets out of hand. ego(lite)'s Spaces run inside one browser process you already have open, so running five tasks at once doesn't mean five browser instances to babysit.
Does ego(lite) work with Claude Code and Codex?
Yes. Any CLI agent that writes code plugs in through the MIT-licensed ego-browser shell: Claude Code, Codex, Cursor, Gemini CLI, Opencode, and custom in-house agents.
Is ego(lite) free like Puppeteer?
Yes. Free, no subscription, and the ego-browser shell is open source.
Why is JavaScript commonly used for web automation?
JavaScript runs in the browser's execution model and exposes the DOM, events, fetch, and browser tooling directly. Node.js also makes it easy to share code between a web app and a CI worker, which is why Puppeteer is a practical choice for deterministic scripts. ego(lite) keeps that JavaScript capability but lets an agent write short, task-specific code against the current page instead of asking you to maintain a selector tree for every workflow.
