What is Sitecap and its primary functions?

Sitecap is a versatile tool for capturing high-quality website screenshots, rendering arbitrary HTML content, and extracting fully processed HTML from URLs using Chrome CDP.

What operational modes does Sitecap support?

Sitecap operates in three flexible modes: a command-line interface (CLI) for scripting, an HTTP server for a RESTful API, and a Model Context Protocol (MCP) server for advanced automation workflows.

How does Sitecap help control website rendering and screenshot output?

It provides comprehensive controls, including setting viewport dimensions, resizing and cropping screenshots, enabling full-height capture, defining timeouts, and filtering external resources via domain whitelisting.

Can Sitecap handle dynamic, JavaScript-rendered content?

Yes, leveraging Chrome CDP, Sitecap excels at rendering and capturing websites that heavily rely on JavaScript, ensuring the final screenshot or extracted HTML reflects all dynamic content after execution.

Sitecap

Name: Sitecap
Author: leafo

byleafo

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Browser Automation

Web Scraping & Data Collection

Developer Tools

Capture high-quality screenshots of websites, render HTML content, and extract fully processed HTML using Chrome CDP.

Sitecap is a versatile tool designed for generating website screenshots and extracting rendered HTML content. Leveraging Chrome's headless capabilities via the Chrome DevTools Protocol (CDP), it offers multiple modes of operation: a command-line interface for direct use, an HTTP server for programmatic access via a REST API, and a Model Context Protocol (MCP) server for integration with MCP clients. It provides extensive control over viewport size, image resizing (including cropping and scaling), timeout settings, and domain whitelisting for resource filtering, making it suitable for a wide range of web content capture and analysis tasks.

Key Features

01Multi-mode operation: CLI, HTTP server, and MCP server

02Comprehensive screenshot controls: viewport, resize, crop, full-height

03Render HTML from stdin or extract fully processed HTML from URLs

04Domain whitelisting for resource filtering (e.g., block ads/trackers)

05Prometheus-compatible metrics for HTTP server monitoring

064 GitHub stars

Use Cases

01Automate website screenshot generation for testing or archival

02Retrieve the final rendered HTML of JavaScript-heavy Single Page Applications (SPAs)

03Generate images from dynamic or programmatically generated HTML content