inapp-share-kit

A lightweight JavaScript widget that detects LinkedIn's in-app browser and injects a floating "Copy link" button — so your readers can share the current page URL, not the original feed link.

The Problem

When someone opens a link from LinkedIn, it loads inside LinkedIn's in-app browser. That browser has its own navigation bar with a built-in "Copy link" button.

The issue: that button always copies the original URL shared in the feed — not the URL of the page the user has navigated to.

Example:

• A LinkedIn post links to your homepage.
• The user clicks it and navigates to a blog post or product page.
• Clicking LinkedIn's nav bar "Copy link" button still copies your homepage URL, not the blog/product page URL.

This is a known, unfixed behaviour in LinkedIn's in-app browser. There is no way to modify the browser’s built-in nav bar from your site.

How inapp-share-kit Solves It

inapp-share-kit injects a floating copy button directly into your page:

• Copies the current page URL (window.location.href) instead of the feed URL.
• Only appears when the page is opened inside LinkedIn's in-app browser, so it doesn’t interfere with regular visitors.
• Fully customizable position (left or right) and includes built-in modern styling.
• Lightweight and dependency-free.

Installation

npm install inapp-share-kit

Or include directly in your HTML:

<script src="path/to/inapp-share-kit/index.js"></script>

Usage

<script>
  InAppShareKit.init({
    position: "left",       // "left" or "right"
    showOnlyLinkedIn: true, // only show inside LinkedIn in-app browser
    debug: true             // logs info in console
  });
</script>

The button will automatically appear in your site when opened in LinkedIn's in-app browser, letting users copy the real current URL of the page.

License

MIT