# Open Graph Checker

> Preview and check a page's Open Graph metadata — see how it will look when shared and which tags are missing.

Canonical page: [https://chrome-stats.com/d/open-graph-checker](https://chrome-stats.com/d/open-graph-checker)

## Overview

- **ID:** `open-graph-checker`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Coywolf
- **Category:** feeds-news-blogging,web-development,social-communication
- **Daily users:** 9
- **Weekly downloads:** 5
- **Version:** 0.4.0
- **Last updated:** 2026-06-26
- **First published:** 2026-06-23
- **Size:** 67 KB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/open-graph-checker/)
- **Website:** [https://coywolf.com/news/social-media/open-graph-checker/](https://coywolf.com/news/social-media/open-graph-checker/)

## Description

See exactly how any web page will look when shared on social media — and catch missing Open Graph tags before you publish.

Open Graph Checker reads the Open Graph metadata of the page you're viewing and shows a live preview of the image, title, and description, just as it will appear when the link is shared. It also gives you a checklist of the key tags and flags anything missing or worth improving — a recommended 1200×630 image, og:url, og:type, and og:site_name.

Works where other tools don't. Because it reads the live, rendered page in your browser — not a re-fetch of the URL — it works on:
<ul><li>localhost and custom ports</li><li>staging sites behind a login</li><li>pages whose tags are added by JavaScript (Next.js, single-page apps, and other client-rendered sites)</li></ul>
For marketers and developers. Preview how a post, article, or product page will appear before you share it — edit, reload, and preview instantly. No server round-trip.

Privacy by design. It reads the page only when you click the toolbar icon, requests no broad permissions, and sends nothing anywhere — all checking happens locally in your browser.
Free and open source.

## Rankings

- #35,488 — Overall
- #17 — graph
- #178 — checker

## Permissions and access

### Permissions

- `activeTab`
- `scripting`

## Safety

- **Risk impact:** Very low risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

- [Graphcheckr](https://chrome-stats.com/d/graphcheckr)
- [Social Open Graph Preview](https://chrome-stats.com/d/social-open-graph-preview)
- [OpenGraphs](https://chrome-stats.com/d/opengraphs) — 23 users, 5.00 / 5
- [OGraph Previewer](https://chrome-stats.com/d/ograph-previewer) — 7 users
- [Open Graph Preview](https://chrome-stats.com/d/open-graph-preview-and-debug) — 1,612 users, 4.00 / 5
- [OG Previewer](https://chrome-stats.com/d/og-previewer) — 3 users
- [Open Graph Previewer](https://chrome-stats.com/d/open-graph-previewer) — 26 users
- [OpenGraph Sniffer MHL](https://chrome-stats.com/d/opengraph-sniffer-mhl)
- [SEO Check by Gyaner](https://chrome-stats.com/d/seo-check-by-gyaner) — 2 users, 5.00 / 5
- [Social Share Preview](https://chrome-stats.com/d/social-share-preview) — 325 users, 5.00 / 5
- [SEO Health Checker](https://chrome-stats.com/d/seo-health-checker) — 4 users
- [Social Previewer](https://chrome-stats.com/d/social-previewer) — 2 users

---

Source: [Chrome-Stats](https://chrome-stats.com/d/open-graph-checker)