Prefetching links in Remix

Introduction

Prefetching links helps your app load pages faster by getting data before you click. It feels smoother and quicker.

When you want to speed up navigation between pages in your Remix app.

When you expect users to click certain links soon and want to prepare data ahead.

When you want to improve user experience by reducing waiting time after clicking.

When you have pages with data that takes time to load and want to hide that delay.

Syntax

Remix

<Link to="/path" prefetch="intent">Link Text</Link>

The prefetch attribute controls when Remix fetches data for the link.

Common values are intent (on hover/focus) or render (immediately).

Examples

Prefetches data when user shows intent by hovering or focusing the link.

Remix

<Link to="/about" prefetch="intent">About Us</Link>

Prefetches data immediately when the page renders, useful for very likely next pages.

Remix

<Link to="/dashboard" prefetch="render">Dashboard</Link>

No prefetching; data loads only after clicking the link.

Remix

<Link to="/contact" prefetch="none">Contact</Link>

Sample Program

This component shows three links. The 'About Us' link prefetches data when hovered or focused. The 'Dashboard' link prefetches data immediately when the page loads. The 'Contact' link does not prefetch data.

Remix

import { Link } from "@remix-run/react";

export default function Home() {
  return (
    <main>
      <h1>Welcome to our site</h1>
      <nav>
        <ul>
          <li><Link to="/about" prefetch="intent">About Us</Link></li>
          <li><Link to="/dashboard" prefetch="render">Dashboard</Link></li>
          <li><Link to="/contact" prefetch="none">Contact</Link></li>
        </ul>
      </nav>
    </main>
  );
}

Important Notes

Prefetching uses extra network data, so use it wisely to avoid slowing down users on slow connections.

Use prefetch="intent" for most cases to balance speed and data usage.

Prefetching works best with Remix loaders that fetch data for pages.

Summary

Prefetching links makes page loads faster by loading data before clicking.

Use the prefetch attribute on Remix Link components.

Choose between intent (hover/focus) or render (immediate) prefetching.

Practice

1. What does the prefetch attribute do when used on a Remix Link component?

easy

A. It automatically redirects the user to the linked page on page load.

B. It disables the link until the page is fully loaded.

C. It changes the link's color when hovered.

D. It loads the linked page's data before the user clicks the link to speed up navigation.

Solution

1. Step 1: Understand the purpose of prefetching in Remix

   Prefetching is used to load data or resources ahead of time to make navigation faster.

2. Step 2: Identify what the prefetch attribute does on a Link

   It triggers loading of the linked page's data before the user clicks, improving speed.

3. Final Answer:

   It loads the linked page's data before the user clicks the link to speed up navigation. -> Option D

4. Quick Check:

   Prefetching = Load data early [OK]

Hint: Prefetch loads data early to speed up clicks [OK]

Common Mistakes:

• Thinking prefetch disables links
• Confusing prefetch with styling effects
• Assuming prefetch causes automatic redirects

2. Which of the following is the correct way to prefetch a link on hover using Remix's Link component?

easy

A. <Link to='/about' prefetch='intent'>About</Link>

B. <Link to='/about' prefetch='hover'>About</Link>

C. <Link to='/about' prefetch='render'>About</Link>

D. <Link to='/about' prefetch='click'>About</Link>

Solution

1. Step 1: Recall valid prefetch values in Remix

   Remix supports 'intent' (hover/focus) and 'render' (immediate) for prefetch.

2. Step 2: Match the value for hover prefetching

   'intent' triggers prefetch on hover or focus, so it is correct.

3. Final Answer:

   <Link to='/about' prefetch='intent'>About</Link> -> Option A

4. Quick Check:

   Hover prefetch = 'intent' [OK]

Hint: 'intent' means hover/focus prefetch [OK]

Common Mistakes:

• Using 'hover' instead of 'intent' as prefetch value
• Confusing 'render' with hover prefetch
• Using invalid values like 'click'

3. Given the code snippet below, what will happen when the page loads?

<Link to='/dashboard' prefetch='render'>Dashboard</Link>

medium

A. The dashboard link will be disabled until data is loaded.

B. The dashboard data will be prefetched immediately when the page loads.

C. The dashboard data will be prefetched only when the user clicks the link.

D. No prefetching will happen because 'render' is invalid.

Solution

1. Step 1: Understand 'render' prefetch behavior

   'render' triggers prefetch immediately when the page renders, without user interaction.

2. Step 2: Apply this to the given code

   The dashboard data will start loading as soon as the page loads.

3. Final Answer:

   The dashboard data will be prefetched immediately when the page loads. -> Option B

4. Quick Check:

   'render' = immediate prefetch [OK]

Hint: 'render' prefetches right away on page load [OK]

Common Mistakes:

• Thinking prefetch happens only on click
• Believing 'render' is invalid
• Assuming link disables during prefetch

4. Identify the error in this Remix Link component that tries to prefetch on hover:

<Link to='/profile' prefetch='hovering'>Profile</Link>

medium

A. The prefetch value 'hovering' is invalid; it should be 'intent'.

B. The 'to' attribute must be 'href' instead.

C. The Link component cannot use prefetch attribute.

D. The link text 'Profile' must be inside a <span>.

Solution

1. Step 1: Check valid prefetch attribute values

   Remix accepts 'intent' or 'render' as valid prefetch values, not 'hovering'.

2. Step 2: Identify the incorrect value usage

   The code uses 'hovering', which is invalid and causes no prefetch.

3. Final Answer:

   The prefetch value 'hovering' is invalid; it should be 'intent'. -> Option A

4. Quick Check:

   Valid prefetch values = 'intent' or 'render' [OK]

Hint: Use only 'intent' or 'render' for prefetch [OK]

Common Mistakes:

• Using non-existent prefetch values
• Confusing 'to' with 'href' in Remix Link
• Thinking prefetch attribute is unsupported

5. You want to optimize your Remix app so that the home page prefetches the 'settings' page data only when the user is likely to click it (hover or focus), but the 'help' page data should load immediately on page render. Which is the correct way to set prefetch attributes on these links?

hard

A. <Link to='/settings' prefetch='render'>Settings</Link> <Link to='/help' prefetch='intent'>Help</Link>

B. <Link to='/settings' prefetch='hover'>Settings</Link> <Link to='/help' prefetch='render'>Help</Link>

C. <Link to='/settings' prefetch='intent'>Settings</Link> <Link to='/help' prefetch='render'>Help</Link>

D. <Link to='/settings' prefetch='click'>Settings</Link> <Link to='/help' prefetch='render'>Help</Link>

Solution

1. Step 1: Match prefetch types to desired behavior

   'intent' prefetches on hover/focus, 'render' prefetches immediately on page load.

2. Step 2: Assign correct prefetch values to each link

   Settings should use 'intent' and Help should use 'render' as per requirements.

3. Final Answer:

   <Link to='/settings' prefetch='intent'>Settings</Link> <Link to='/help' prefetch='render'>Help</Link> -> Option C

4. Quick Check:

   Hover prefetch = 'intent', immediate prefetch = 'render' [OK]

Hint: 'intent' for hover, 'render' for immediate prefetch [OK]

Common Mistakes:

• Swapping 'intent' and 'render' values
• Using invalid prefetch values like 'hover' or 'click'
• Prefetching all links immediately without need