Including sub-views (@include) in Laravel - Performance & Optimization

Performance: Including sub-views (@include)

MEDIUM IMPACT

This affects the server-side rendering time and the size of the HTML sent to the browser, impacting the initial page load speed.

Rendering a page with reusable components using sub-views

Laravel

@includeWhen($showHeader, 'header')
@includeWhen($showSidebar, 'sidebar')
@include('content')
@include('footer')

Conditionally includes only necessary sub-views, reducing server work and HTML size.

📈 Performance Gainreduces server render time by up to 40%; smaller HTML reduces LCP

Rendering a page with reusable components using sub-views

Laravel

@include('header')
@include('sidebar')
@include('content')
@include('footer')
@include('comments')
@include('related-posts')

Including many sub-views causes multiple file reads and template compilations, increasing server response time and HTML size.

📉 Performance Costblocks server rendering for 50-150ms depending on number of includes; increases HTML size by 10-30% per sub-view

Performance Comparison

Pattern	Server Render Time	HTML Size	LCP Impact	Verdict
Many unconditional @include calls	High (multiple file reads)	Large (more HTML)	Slower LCP	[X] Bad
Conditional @include calls	Medium (fewer files)	Smaller (less HTML)	Faster LCP	[OK] Good

Rendering Pipeline

When Laravel renders a view with @include, it reads and compiles each sub-view file on the server, then combines their HTML output into one response sent to the browser.

→Server-side Rendering

→Network Transfer

→Browser Parsing

⚠️ BottleneckServer-side Rendering due to multiple file reads and template compilations

Core Web Vital Affected

LCP

This affects the server-side rendering time and the size of the HTML sent to the browser, impacting the initial page load speed.

Optimization Tips

1Limit the number of @include sub-views to reduce server rendering time.

2Use conditional includes (@includeWhen) to avoid rendering unnecessary parts.

3Cache compiled views to speed up repeated requests.

Performance Quiz - 3 Questions

How does including many sub-views with @include affect page performance?

A Improves browser rendering speed by splitting HTML

B Reduces network requests by loading sub-views separately

C Increases server render time and HTML size, slowing initial load

D Has no impact on performance

DevTools: Network

How to check: Open DevTools, go to Network tab, reload page, and check the size and timing of the main HTML document.

What to look for: Look for large HTML size and long server response time indicating slow server rendering due to many includes.