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Instant Page: Accelerate Your Website with Just-In-Time Preloading

2025-09-02

Website owners and developers can significantly improve user experience and boost conversion rates with instant.page, a simple JavaScript library that preloads pages just before users click on links. By leveraging just-in-time preloading, instant.page reduces latency and makes websites feel instant.

How It Works

Instant.page preloads pages based on user behavior. On desktop, it starts preloading when a user hovers over a link for 65 ms, a point at which there's a 50% chance they'll click. On mobile, preloading begins when a user starts touching the display. This approach ensures that pages load quickly without wasting bandwidth on unused requests.

Benefits and Features

  • Reduces latency and improves user experience
  • Increases conversion rates by making pages load instantly
  • Respects user data plans and server bandwidth by preloading only HTML and only when necessary
  • Lightweight (1 kB) and loads after other content
  • Compatible with most modern browsers, with fallback for unsupported browsers
  • Open-source and free under the MIT license

Easy Integration

To use instant.page, simply copy and paste a snippet of code into your website's HTML, just before the closing </body> tag. The library is designed to be non-intrusive and works with most websites without requiring additional setup.

By implementing instant.page, website owners can provide a faster, more responsive experience for their users, potentially leading to increased engagement and conversion rates.

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