Webpage Screenshot MCP

Webpage Screenshot MCP does exactly what the name suggests: it grabs full-page screenshots or captures specific DOM elements from any URL you throw at it. It's built on Puppeteer, so it handles JavaScript-heavy sites properly and can authenticate behind login walls if you pass cookies. The system browser support means you can use your local Chrome or Edge profile, which is handy when you're testing authenticated flows without faffing about with session tokens. I'd reach for this when I'm building UI components and need to verify how they render across different viewport sizes or when I'm documenting bugs for a designer. The element-specific screenshot feature is genuinely useful here: you can target a CSS selector and get just that component, not the entire page with scrollbars and browser chrome. It's faster than manually cropping screenshots and more reliable than asking a designer to squint at a staging URL. The pre-listed use cases mention visual regression testing, and that's fair, though you'll need to wire up your own diffing logic. This tool just captures the images. It doesn't compare them or flag changes. That's not a criticism, just a reality check. If you're expecting an all-in-one regression suite, you'll be disappointed. If you want a reliable way to grab screenshots from Claude Desktop or Cursor and pipe them into your own workflow, this does the job. Quirks: it's a community project, so documentation is thin. The repo README covers the basics but doesn't walk through authentication flows or edge cases. I had to read the source to figure out how to pass custom headers. Also, the build step is mandatory, which adds friction if you're used to plug-and-play MCP servers. No pre-built binaries, no npm package. You clone the repo, run npm install, build it, then point your host config at the compiled output. Who shouldn't bother: if you're not doing UI work or you don't need programmatic screenshots, skip it. If you're already using a dedicated visual regression tool like Percy or Chromatic, this won't replace it. But if you're a solo dev or small team who needs screenshots on demand inside Claude, it's a solid addition to your toolkit.