Capture Extension

Capture any element as structured SiFR — by hand

The E2LLM browser extension lets you pick any element on a live page and get a clean, structured SiFR snapshot — straight to your clipboard or a file. Paste it into any LLM to debug, review, or audit. It runs entirely in your browser. No account.

ChromeChrome Web Store FirefoxFirefox Add-ons

In daily use across Chrome and Firefox — free, no account.

What it does
You drive. Pick what you want, capture it, take it wherever you like.

Click any element → SiFR

Point at any element and get a structured SiFR snapshot — element roles, text, selectors, positions, salience — as JSON in your clipboard.

Full page or one element

Capture a single component or the whole rendered page, with salience scoring so what matters stands out.

Clipboard or file

Copy straight to your prompt, or save to disk for diff workflows, audit trails, and side-by-side review.

100% local, no account

SiFR is generated in your browser. The page DOM never leaves your machine. No login, no tracking, works offline.

It captures. It doesn't act.

The extension is a manual tool — you choose every snapshot, and nothing clicks, types, or navigates on your behalf. That's by design: it's the hands-on capture tool. If you want your AI to read and act on the live page on its own — click buttons, fill forms, scroll — that's E2LLM MCP, the relay-connected product.

What people use it for
One-off, developer-driven captures where you want to stay in control.
Debugging — grab a component's real rendered state and ask an LLM what's wrong.
Code review — capture a UI region and diff it against the intended design.
Accessibility checks — hand an LLM the structured roles and labels of a form.
Audits — save captures to disk and track how a page changes over time.
"What is this?" — paste a snapshot and ask an LLM to explain a confusing element.
Learning SiFR — see exactly what the format looks like on pages you know.
Install

Works on Chrome · Arc · Brave · Edge (Chromium) · Firefox. Prefer to install from a file, or deploy across a managed fleet? See Downloads.