> For the complete documentation index, see [llms.txt](https://ebay.gitbook.io/mindpatterns/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ebay.gitbook.io/mindpatterns/antipatterns/disabling-pinch-to-zoom.md).

# Disabling Pinch-to-Zoom

In a `<meta name=”viewport”... >` element

* Don’t set `user-scalable=”no”`
* Don’t use `maximum-scale`

### Why not?

Users with low vision depend on the ability to zoom content.

* We **must not** disable the use of the native browser zoom.
* We **must not** dictate how much a user can zoom the page.

The user has the right to make their experience useful for them even though others might not like the way it looks. The ability to pinch/zoom is an expected gesture for these devices, we should not remove this functionality.

### Browser Oddities

It seems that not all browsers support meta viewport. If you're unable to reproduce this issue, please refer to one of the mobile browsers below.

#### Seems to support meta viewport

* Chrome for iOS

#### Doesn't seem to support meta viewport

* Safari for iOS

### Exceptions

Disabling pinch-to-zoom only makes sense in certain situations: a game, image editing or mapping application, for example.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://ebay.gitbook.io/mindpatterns/antipatterns/disabling-pinch-to-zoom.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
