HTTRACK

HTTrack Web Crawler
HTTrack is a free, open-source offline browser and website crawler created by Xavier Roche. It allows users to download an entire website from the Internet to a local directory, building recursively all directories, HTML, images, and other files from the server to your computer.
Core Mechanics & Features
  • Relative Link Rewriting: HTTrack arranges the original site's relative link-structure. Opening a page of the downloaded site in a browser lets you navigate from link to link as if viewing it online.
  • Incremental Updates: It can update an existing mirrored site and resume interrupted downloads.
  • Customization & Filters: Supports configurable depth limits, file-type filters (inclusion/exclusion lists), and link rules to control how far the crawler traverses.
  • Engine Architecture: Driven by a customizable web crawler supporting HTTP/HTTPS, proxy configurations, bandwidth limits, and custom user-agent headers.
  • Cross-Platform: Available as a GUI version (WinHTTrack) on Windows, and via command-line (httrack) on Linux, Unix, and macOS.
Common Use Cases
1. Offline Archiving
Reading documentation, tutorials, or reference materials without an active internet connection.
2. Site Migration & Recovery
Backing up legacy static websites when server access or original source code is unavailable.
3. Security Auditing
Mirroring a target web application's frontend assets during reconnaissance to analyze code offline.
Basic Command-Line Syntax
httrack "http://example.com" -O "/path/to/destination" "+*.example.com/*" -v
  • -O : Sets the local output path for stored files.
  • +*.example.com/* : URL inclusion rule (defines domain boundaries).
  • -v : Enables verbose logging output during processing.
Important Note: HTTrack only downloads publicly accessible, client-side rendered assets (HTML, CSS, static JS, images, media). It cannot download server-side backend code (PHP, Python, database contents) or dynamic content rendered exclusively via authenticated API endpoints unless sessions/cookies are explicitly configured.

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