URL: /rules/images/offscreen-lazy

---
title: "Offscreen Image Lazy Loading"
description: "Checks if offscreen images use lazy loading"
---

Checks if offscreen images use lazy loading

| | |
|---|---|
| **Rule ID** | `images/offscreen-lazy` |
| **Category** | [Images](/rules/images) |
| **Scope** | Per-page |
| **Severity** | warning |
| **Weight** | 5/10 |

## Solution

Add loading='lazy' to images below the fold to defer loading until needed. This reduces initial page load time and saves bandwidth. Exception: Don't lazy-load LCP image or above-the-fold content. Use loading='eager' for critical images.

## Options

This rule supports the following configuration options:

| Option | Type | Default | Description |
|--------|------|---------|-------------|
| `above_fold_count` | unknown | `undefined` | Number of images considered above the fold |

### Configuration Example

```toml squirrel.toml
[rules."images/offscreen-lazy"]
above_fold_count = undefined
```

## Enable / Disable

### Disable this rule

```toml squirrel.toml
[rules]
disable = ["images/offscreen-lazy"]
```

### Disable all Images rules

```toml squirrel.toml
[rules]
disable = ["images/*"]
```

### Enable only this rule

```toml squirrel.toml
[rules]
enable = ["images/offscreen-lazy"]
disable = ["*"]
```