# Heads Up > View your \ data for easier developing. Canonical page: [https://chrome-stats.com/d/heads-up](https://chrome-stats.com/d/heads-up) ## Overview - **ID:** `heads-up` - **Platform:** Firefox - **Type:** Firefox add-on - **Status:** Available - **Publisher:** De Voorhoede - **Category:** web-development - **Daily users:** 1 - **Version:** 1.0.0 - **Last updated:** 2020-02-05 - **First published:** 2020-02-05 - **Size:** 196 KB - **Data as of:** 2026-09-10 - **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/heads-up/) - **Website:** [https://github.com/voorhoede/heads-up](https://github.com/voorhoede/heads-up) ## Description Heads Up is a Firefox add-on that provides web developers with a visual tool to easily inspect and view the data in their section. This saves time by eliminating the need to manually check the source code of the page being tested. The add-on supports inspecting page meta data and previewing Twitter cards, and can be used with any site or web app. It also supports local host and hot module reloading. The roadmap for Heads Up includes features such as using Open Graph for Twitter preview, app meta data for Android, and social media previews for Facebook, LinkedIn, Pinterest, and Slack. The add-on is open source and its source code can be found on GitHub. ## Rankings - #102,818 — Overall ## Permissions and access ### Permissions - `activeTab` ### Content script matches - `` ## Safety - **Risk impact:** Moderate risk impact - **Risk likelihood:** Moderate risk likelihood ### Analysis details - Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site. - 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 - [OG Previewer](https://chrome-stats.com/d/og-previewer) — 3 users - [Open Graph Checker](https://chrome-stats.com/d/open-graph-checker) — 10 users - [Social Previewer](https://chrome-stats.com/d/social-previewer) — 1 users - [OpenGraphs](https://chrome-stats.com/d/opengraphs) — 21 users, 5.00 / 5 - [OGraph Previewer](https://chrome-stats.com/d/ograph-previewer) — 7 users - [Graphcheckr](https://chrome-stats.com/d/graphcheckr) - [Meta and OG Preview](https://chrome-stats.com/d/meta-and-og-preview) — 1 users - [Social Open Graph Preview](https://chrome-stats.com/d/social-open-graph-preview) - [Open Graph Previewer](https://chrome-stats.com/d/open-graph-previewer) — 26 users - [SEO Inspector](https://chrome-stats.com/d/seo-inspector-extension-add-on) — 2 users - [Meta tags inspector](https://chrome-stats.com/d/meta-tags-inspector) — 290 users, 4.75 / 5 - [Peek - Design & Asset Toolkit](https://chrome-stats.com/d/peek-design-asset-toolkit) — 18 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/heads-up)