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 the relay-connected E2LLM — connect the AI you already use.

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.

Want AI that acts, not just looks? → E2LLM MCP

The rest of E2LLM is the relay-connected product: your AI tools connect to your browser over MCP, read the live page as SiFR, and act on it — click, fill, scroll — in the session you're already signed into. Same SiFR format, autonomous instead of hands-on.

Explore E2LLM MCP →
Install
ChromeChrome Web Store FirefoxFirefox Add-ons

Works on Chrome · Arc · Brave · Edge (Chromium) · Firefox. Prefer to install from a file, or the store isn't available where you are? See the direct downloads below.

Install without the store
Download directly from us
Prefer to install without a web store — or the store isn't available where you are? Every E2LLM extension is hosted here too, so you're never locked out. Chrome builds are ready now; signed Firefox builds are on the way.

E2LLM MCP

Chrome · v1.5.10

The relay-connected extension — connect your AI to your browser over MCP.

Download for Chrome Store listing rolling out

E2LLM Extension

Chrome · v2.9.1

The standalone capture extension — grab a SiFR snapshot of any element, 100% local.

Download for Chrome or the Chrome Web Store →

Firefox

Signed build coming

Direct downloads for Firefox need a signed add-on — in progress. For now, install from the Firefox Add-ons store.

Firefox Add-ons →

Installing a Chrome download

  1. Download and unzip the file.
  2. Open chrome://extensions in Chrome.
  3. Turn on Developer mode (top-right toggle).
  4. Click Load unpacked and select the unzipped folder.

Direct builds install in developer mode today. A one-click signed build (.crx) and an enterprise-policy install are coming next.