Who is Share Card Checker for?

Share Card Checker is a B2B product built for website owners, developers, and SEO professionals.

Does Share Card Checker have a free plan?

Yes — Share Card Checker is free to use.

What platforms does Share Card Checker run on?

Share Card Checker runs on the web, embeddable surfaces, and Android.

Is Share Card Checker still active?

Unverified. Share Card Checker has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What projects are similar to Share Card Checker?

Similar projects tracked by PulseGate include "Can I React?", HTML-Essentials, and AJAX Admin Navigation Sidebar AJAX.

Who develops Share Card Checker?

Share Card Checker is developed by E13.

How long has Share Card Checker been around?

Share Card Checker first shipped in 2026.

Back to the index

Share Card Checker

Name: Share Card Checker
Author: E13

mozilla.orgBrowser DevTools & extensions

Share Card Checker is a Firefox extension that previews how a webpage link will appear when shared, including its title, description, image, and card type. It also lists missing or overly long metadata tags for website owners, developers, and SEO professionals.

FreeWebEmbeddableAndroid

Visit mozilla.org

Overview

8 features

In the Browser DevTools & extensions space, Share Card Checker takes a focused approach. It focuses on checking how links will appear when shared and finding incomplete or overly long social metadata. Share Card Checker is a B2B product aimed at website owners, developers, and SEO professionals. Share Card Checker is free to use. Share Card Checker is available on the web, embeddable surfaces, and Android.

Behind Share Card Checker is E13, and it first shipped in 2026. Among its 8 catalogued features are share card preview, title checking, and description checking. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

Share card preview
Title checking
Description checking
Image preview
Card type detection
Missing tag list
Length warnings
Firefox for Android

Built with & integrations

Runs on

BrowserEmbeddableAndroid

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed27 Aug · 15:58 UTC
Share Card Checker verified against its public source
Source: PulseGate · Open

Frequently asked questions about Share Card Checker

What is Share Card Checker?: Share Card Checker focuses on checking how links will appear when shared and finding incomplete or overly long social metadata. It is catalogued under Browser DevTools & extensions on PulseGate.
Who is Share Card Checker for?: Share Card Checker is a B2B product built for website owners, developers, and SEO professionals.
Does Share Card Checker have a free plan?: Yes — Share Card Checker is free to use.
What platforms does Share Card Checker run on?: Share Card Checker runs on the web, embeddable surfaces, and Android.
Is Share Card Checker still active?: Unverified. Share Card Checker has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What projects are similar to Share Card Checker?: Similar projects tracked by PulseGate include "Can I React?", HTML-Essentials, and AJAX Admin Navigation Sidebar AJAX."Can I React?"HTML-Essentials AJAX Admin Navigation Sidebar AJAX
Who develops Share Card Checker?: Share Card Checker is developed by E13.
How long has Share Card Checker been around?: Share Card Checker first shipped in 2026.

At a glance

Pricing: Free
Platforms: Web
First seen: 27 Aug 2026
Built for: website owners, developers, and SEO professionals
Model: B2B
Solves: Checking how links will appear when shared and finding incomplete or overly long social metadata.

Registered as

Firefox Add-ons: share-card-checker

Developer

E13

Index record

Identity confidence: Medium · 78.8
Indexed: 27 Aug 2026
Lifecycle: Alive
First seen: Aug 2026
Last seen: 27 Aug 2026

Identity audit (13)

Slug: share-card-checker-mozilla-org
Lifecycle state recorded: 27 Aug 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 27 Aug 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 27 Aug 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/share-card-checker

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