Chromeflow vs Puppeteer
Puppeteer is the original Chrome DevTools Protocol library — light, stable, used everywhere from server-side PDF rendering to web scraping. It's also a non-starter for AI agents that need a logged-in browser.
Capability matrix
| Chromeflow | Puppeteer | |
|---|---|---|
| Runs in your real Chrome with sessions intact | Yes | No — fresh profile |
| Inherits your existing logins (Stripe, GitHub, Canvas, AWS…) | Yes | No — re-login every run |
| Handles 2FA / passkeys | Yes — pauses for you | No |
| One-command install as an MCP plugin | /plugin install chromeflow | Library — wire your own MCP server |
| Native integration with Claude Code & Codex CLI | Yes (28 MCP tools) | DIY — wrap with custom MCP server |
Captures API keys → .env | Yes | No |
| Privileged fetch (Chrome cookies, bypasses page CSP) | Yes | CDP route exists, no built-in tool |
| Authenticated file downloads | One call | DIY via CDP Page.downloadProgress |
| Headless mode for server-side work | Headed only (it's your Chrome) | Yes — primary mode |
| Server-side PDF generation | No | Yes — battle-tested |
| Resource cost per run | Zero new processes | Spawns a Chrome instance |
| Cross-browser (Chromium / Firefox / WebKit) | Chromium only | Chromium primary, experimental Firefox |
| License & cost | Free, MIT | Free, Apache 2.0 |
Where Puppeteer still wins
Server-side PDF rendering. The single biggest use case for Puppeteer in production. Spin up a Node service, point Puppeteer at any HTML, get a polished PDF out — receipts, reports, invoices, certificates. Nothing else competes for this on cost-per-page or render quality. Chromeflow is the wrong tool here entirely; this is a server-side, headless, no-human workflow.
Headless screenshot pipelines. Capturing OG-card previews, social-card snapshots, or any "render this URL and give me a PNG" pipeline. Puppeteer's page.screenshot() with viewport overrides is the gold standard. Pair it with an image-optimization pipeline and you have a service that powers social previews for an entire SaaS.
Public-content scraping at scale. Puppeteer's resource model (spawn-pool-recycle) and concurrency story makes it well-suited for scraping pipelines that pull from many public pages. No login = no session-sharing benefit from Chromeflow.
Browser automation as a library inside a larger codebase. Puppeteer is one npm install away. If you're writing a CLI tool, a CI step, or an internal automation that needs Chrome — Puppeteer is the right primitive.
Where Chromeflow wins
Agentic workflows behind a login. The whole point. Puppeteer launches a fresh browser; your agent has to script logins from scratch and there's no path past 2FA. Chromeflow runs in your Chrome where every session you've spent the last year setting up is already there. The agent doesn't need to know your Stripe password — it just opens the dashboard you're already in.
Native MCP integration. Chromeflow is a one-command install as a plugin for Claude Code or Codex CLI. With Puppeteer you'd build the MCP server yourself: define schemas for 28 tools, wire WebSocket transport, manage Chrome process lifecycle, handle errors, write the skill that teaches the agent how to use it. Days of work that's already done in Chromeflow.
Credential capture, attachment parsing, privileged fetch. write_to_env writes captured keys to .env in one call. read_attachment parses authenticated docx attachments in-extension (no local libreoffice). fetch_url bypasses page CSP and includes your Chrome cookies. None of these exist in Puppeteer — you'd assemble each one as custom CDP code.
Visual handoff for human-in-the-loop steps. When a workflow hits "enter your password" or "approve this 2FA prompt", Chromeflow highlights the field with a callout and pauses with wait_for_click. Puppeteer has nothing for this — agent flows that need a human just hang.
The decision rule
- Server-side, headless, no human in the loop, no inherited session needed → Puppeteer.
- Interactive, agent-driven, behind a login, needs visual feedback or human handoff → Chromeflow.
- Mixed: Chromeflow during the interactive setup phase (capture API keys, configure dashboards, download attachments) → Puppeteer in CI for headless verification.
"Puppeteer with --remote-debugging-port"
The closest Puppeteer equivalent to Chromeflow's real-Chrome model is puppeteer.connect({ browserURL: 'http://127.0.0.1:9222' }) attaching to a Chrome you launched with --remote-debugging-port=9222. Same caveats as with Playwright: you can't attach to a Chrome you opened normally (must launch with the flag from the command line), the agent has no native visual handoff, no write_to_env, no MCP integration, and DevTools-open + CDP-connected gets unstable on newer Chrome versions. A workaround for one scenario, not a competitive replacement.
Performance notes
- Cold-start cost: Puppeteer spawns Chrome (~500–800 ms). Chromeflow uses the Chrome already running on your machine (zero cold start, zero new processes).
- Memory: Puppeteer's Chrome instance is ~150–300 MB resident. Chromeflow adds zero memory beyond what your Chrome is already using.
- Throughput: Puppeteer wins at horizontal scale (spawn 10 Chrome workers for parallel scraping). Chromeflow wins at "agent does one careful authenticated task end-to-end".