URL: /rules/mobile/viewport

---
title: "Viewport Meta"
description: "Checks for proper viewport meta tag"
---

Checks for proper viewport meta tag

| | |
|---|---|
| **Rule ID** | `mobile/viewport` |
| **Category** | [Mobile](/rules/mobile) |
| **Scope** | Per-page |
| **Severity** | error |
| **Weight** | 8/10 |

## Solution

The viewport meta tag is essential for responsive design. Use: `<meta name='viewport' content='width=device-width, initial-scale=1'>`. This ensures proper scaling on mobile devices. Without it, mobile browsers render at desktop width and zoom out. Required for mobile-first indexing.

## Enable / Disable

### Disable this rule

```toml squirrel.toml
[rules]
disable = ["mobile/viewport"]
```

### Disable all Mobile rules

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

### Enable only this rule

```toml squirrel.toml
[rules]
enable = ["mobile/viewport"]
disable = ["*"]
```