A website, frozen as a shadow

Saving a page with "Save As" gives you a copy that still phones home, still runs analytics, and often renders blank because the markup is built by JavaScript at runtime. kage (影, "shadow") takes the opposite approach: it drives a real browser, captures the page the way a human would have seen it, then makes it inert.

Say you want Paul Graham's essays on a laptop with no wifi. One command mirrors the site; a second serves it back offline:

kage clone paulgraham.com
kage serve $HOME/data/kage/paulgraham.com

What it does

• Renders first, saves second. Each page goes through real headless Chrome, so a page whose content is assembled by JavaScript is captured fully, not as an empty shell.
• Strips every script. Once the DOM is captured, kage removes all <script> tags, every on* event handler, and any javascript: URL. The saved page makes no network calls and runs no code.
• Keeps the layout. Stylesheets, images, fonts, and media are downloaded and rewritten to relative local paths, so the offline copy looks like the original.
• Stays browsable. In-scope links are rewritten to point at the other saved pages, so you can click around the mirror exactly as you would the live site.
• Packs into one file. Collapse a mirror into a single ZIM archive, the open format Kiwix uses, or a self-contained binary that serves the site when run.

Build kage with the webview tag and a packed binary opens in its own window instead of a browser tab, so an offline mirror feels like a real app:

Where to go next

• New here? Start with the introduction, then the quick start.
• Want to install it? See installation.
• Looking for a specific task? The guides cover scoping a crawl, serving a mirror, resuming an interrupted run, and packing a mirror into one file or a self-contained viewer.
• Need every flag? The CLI reference is the full surface.