URL: /rules/images/image-file-size

---
title: "Image File Size Too Large"
description: "Checks for image files that exceed recommended size limits"
---

Checks for image files that exceed recommended size limits

| | |
|---|---|
| **Rule ID** | `images/image-file-size` |
| **Category** | [Images](/rules/images) |
| **Scope** | Site-wide |
| **Severity** | error |
| **Weight** | 7/10 |

## Solution

Large images slow down page loads and impact Core Web Vitals. Compress oversized images, use modern formats (WebP/AVIF), and resize images to the display dimensions. Consider responsive images with srcset to serve smaller files on mobile.

## Options

This rule supports the following configuration options:

| Option | Type | Default | Description |
|--------|------|---------|-------------|
| `warn_bytes` | number | `204800` (200KB) | Byte size to trigger warning |
| `error_bytes` | number | `1048576` (1MB) | Byte size to trigger error |

### Configuration Example

```toml squirrel.toml
[rules."images/image-file-size"]
warn_bytes = 204800
error_bytes = 1048576
```

## Enable / Disable

### Disable this rule

```toml squirrel.toml
[rules]
disable = ["images/image-file-size"]
```

### Disable all Images rules

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

### Enable only this rule

```toml squirrel.toml
[rules]
enable = ["images/image-file-size"]
disable = ["*"]
```