instant.page is a lightweight, open-source JavaScript library designed to make website navigation feel instantaneous by using "just-in-time preloading" to anticipate a user's next click.

The main features of this tool include:

• Just-In-Time Preloading: The script detects when a user is likely to click a link and begins loading the page's HTML in the background before the click actually happens.

• Predictive Desktop Triggers: On desktop, it starts preloading when a user hovers their mouse over a link for 65 milliseconds, giving the page an average of 300ms to load before the user clicks.

• Touch-Based Mobile Triggers: On mobile, it triggers preloading as soon as a user starts touching their display, providing roughly 90ms of head start before the finger is released.

• "Cheating" Latency: Because the human brain perceives actions under 100ms as instant, this preloading makes pages feel immediate even on slower connections like 3G.

• Resource Efficiency: It is highly respectful of bandwidth; it is only 1 kB in size, loads after everything else on the page, and only preloads the HTML (not images or scripts).

• Data Saver Respect: The tool automatically detects and respects "Data Saver" modes on user devices and uses passive event listeners to ensure page scrolling remains smooth.

• Improved Conversion Rates: By shaving off milliseconds of latency, the tool helps improve sales and engagement; studies from Amazon and Walmart show that removing 100ms of latency can improve sales by 1%.

• Dead-Simple Integration: It can be added to any website in about one minute by placing a single line of HTML code before the closing </body> tag.