Welcome to the Los Altos Police Department | City of Los Altos California

Meetings | City of Los Altos California

Starting a Business | City of Los Altos California

Utilities | City of Los Altos California

Fire and Medical | City of Los Altos California

Home Page | City of Los Altos California

First time visit: View without clicking anything

Los Altos City Council | City of Los Altos California

North County Library Authority | City of Los Altos California

Welcome to Parks & Recreation | City of Los Altos California

Avoid opening links in a new tab or window. Where you must do this, include an explanation
in the text of the link.

## Why this matters

Opening links in a new tab or window breaks the back button and can be disorientating for 
novice web users, and the visually impaired. Generally you should avoid opening links in a
new tab or window, but if you have to, you should include text explaining that this will happen.

## How to fix

An explanation must be clear in the accessible text for the link. For example:

```html
<a href="products.html" target="_blank">
    Products (opens in new window)
</a>
```

Or, for an image inside a link:

```html
<a href="products.html" target="_blank">
    <img src="products.jpg" alt="Products (opens in new window)">
</a>
```

Rather than updating all of your links manually to do this, you can add a simple CSS
selector, such as:

```css
a[target="_blank"]:after {
    content: " (opens in new window)";
}
```

Note that doing this with an icon, is not sufficient to pass this check. The text must be
readable by screen readers.

Alternatively you can override the link text for accessible technologies (like screenreaders),
so that the appearance of the link does not change. For example:

```html
<a href="products.html" target="_blank" aria-label="Products (opens in new window)">
    Products
</a>
```

Note that if you do this, the `aria-label` will replace the text content of the link completely,
so it must still make sense in isolation.

## Terminology

Although it is common to say "opens in new window", almost all browsers now use tabs, and
so this terminology is potentially confusing. You may prefer: "opens in new tab".

## Methodology

1. Silktide considers all links on a page with a `target` attribute of `_blank`.
2. For each link, Silktide considers the screen-readable text of the link, which includes:
   * The text content of the link
   * Any `alt` text inside any images inside the link
   * Any `aria-label` or `aria-labelled-by` text
   * The `content` of the pseudo-elements `:before` and `:after`
3. This text is analysed for the presence of common text, including "opens new tab"
    and "opens new window". If the text is not found, the link fails the test.

## Further reading

Generally best practice is to avoid opening links in a new tab or window.  

The W3C provides detailed guidance on 
[when opening a link in a new window may be appropriate](https://www.w3.org/TR/WCAG20-TECHS/G200.html).

link-text-explains-open-in-new-window

July 2025

June 2025

City of Los Altos

Title / URL	Issues
Welcome to the Los Altos Police Department \| City of Los Altos Californiawww.losaltosca.gov/police	24
Meetings \| City of Los Altos Californiawww.losaltosca.gov/meetings	22
Starting a Business \| City of Los Altos Californiawww.losaltosca.gov/business/page/starting-business	16
Utilities \| City of Los Altos Californiawww.losaltosca.gov/community/page/utilities	15
Fire and Medical \| City of Los Altos Californiawww.losaltosca.gov/police/page/fire-and-medical	13
Home Page \| City of Los Altos Californiawww.losaltosca.gov/	10
First time visit: View without clicking anythingwww.losaltosca.gov/	10
Los Altos City Council \| City of Los Altos Californiawww.losaltosca.gov/citycouncil	10
North County Library Authority \| City of Los Altos Californiawww.losaltosca.gov/nclibraryauthority	8
Welcome to Parks & Recreation \| City of Los Altos Californiawww.losaltosca.gov/parksrec	8

Ensure links explain they open in a new tab

City of Los Altos

Where this issue has occurred