MetaRadar

MetaRadar

Inspect essential on-page SEO metadata directly in your browser.

Fast, local inspection of page metadata with no backend, tracking or external API.

View on GitHub Privacy Policy

Version 1.0.0 Manifest V3

Features

The essentials, in one popup.

Page essentials

Page title, meta description and H1.

Indexing signals

Canonical links and meta robots directives.

Language

The page’s HTML lang attribute.

Images

Images with missing alt attributes.

Social & regional

Open Graph metadata and hreflang links.

Readable results

Passed, Warning and Error labels. System, Light and Dark themes.

Privacy First

Your page data stays on your device.

Local processing

Page checks run in your browser.

No tracking

No analytics or telemetry.

No backend

No accounts or server uploads.

No external APIs

No requests to third-party services.

Page data and inspection results are not persisted.
Only the theme preference is stored locally.

Read the Privacy Policy

How It Works

A direct path from page to results.

  1. Page DOM
  2. Read
  3. Normalize
  4. Evaluate
  5. Results

Vanilla HTML, CSS and JavaScript.
No framework, runtime dependencies or build step.

Screenshots

Real page inspections in Chrome. Select an image to view it at full size.

MetaRadar popup on Wikidata showing page title and meta description checks
Metadata inspection alongside the active page.
MetaRadar in Light theme on Amazon showing page title and description results
Light theme: page title and description.
MetaRadar in Dark theme on Amazon showing Open Graph, H1, canonical and hreflang results
Dark theme: Open Graph, headings and alternate links.

Permissions

Three permissions for a focused tool.

activeTab
Temporary access to the active page after the user invokes MetaRadar.
scripting
Runs MetaRadar’s packaged read-only page reader.
storage
Stores only the selected theme preference locally.

Local Installation

  1. Download or clone the GitHub repository.
  2. Open chrome://extensions.
  3. Enable Developer mode.
  4. Select Load unpacked.
  5. Choose the project root containing manifest.json.