GoogleSiteScore
Chrome Extension · v1.0

One-click SEO audit, right in your toolbar

Audit any webpage in seconds. Title, meta description, headings, canonical, robots, images, structured data — instantly scored. Free. No signup.

How to install

Works in Chrome, Edge, Brave, Arc, Opera, and other Chromium browsers.

GoogleSiteScore
Quick SEO audit
92
SEO score
  • ✓Title length good
  • ✓Meta description good
  • ✓Single H1
  • !2/14 images missing alt
  • ✓Mobile viewport set
  • ✓Indexable (no noindex)

What it checks

Every SEO signal Google's crawler looks at — surfaced in plain English with a 0–100 score.

Title & meta description

Length, presence, and optimization signals.

Heading structure

H1 count, H2 hierarchy, content outline.

Indexability

Robots meta, canonical tag, noindex detection.

Mobile & HTTPS

Viewport meta, secure protocol, language tag.

Images & alt text

Counts images missing accessible alt attributes.

Structured data

Detects JSON-LD schema blocks for rich results.

How to install (30 seconds)

Until we publish to the Chrome Web Store, install it as an "unpacked" extension. Same security as store extensions — you just point Chrome at the folder.

  1. 1
    Download & unzip

    Click the download button above and unzip googlesitescore-extension.zip anywhere on your computer.

  2. 2
    Open chrome://extensions

    Paste chrome://extensions into your Chrome address bar (or edge://extensions in Edge).

  3. 3
    Enable Developer mode

    Flip the Developer mode toggle in the top-right corner of the extensions page.

  4. 4
    Click "Load unpacked"

    A new button appears in the top-left. Click it and select the unzipped extension folder.

  5. 5
    Pin to toolbar

    Click the puzzle-piece icon in your toolbar and pin GoogleSiteScore for one-click access.

Privacy & permissions

The extension uses activeTab and scripting permissions only — it reads the page you're currently looking at when you open the popup, and nothing else.

No data leaves your browser. All SEO checks run locally on the page you're viewing. We don't collect, log, or transmit any URLs, page contents, or analytics. The only network request happens when you click "Run Full Audit" — which opens a new tab on GoogleSiteScore.com.

Source is plain JavaScript — manifest.json, popup.html, popup.css, popup.js. Open it and read every line.