Opening links in new tab in HTML - Deep Dive

Overview - Opening links in new tab

What is it?

Opening links in a new tab means when you click a link on a webpage, it opens the linked page in a separate browser tab instead of replacing the current page. This is done using a special attribute in the link's code. It helps users keep their place on the original page while exploring new content.

Why it matters

Without this feature, clicking a link always replaces the current page, which can be frustrating if you want to keep reading or comparing information. Opening links in new tabs improves user experience by allowing multitasking and easy navigation between pages. It also helps websites keep visitors longer by not forcing them to leave the original page.

Where it fits

Before learning this, you should understand basic HTML links and attributes. After this, you can learn about accessibility best practices for links and advanced link behaviors using JavaScript or frameworks.

Mental Model

Core Idea

Adding a special attribute to a link tells the browser to open that link in a new tab instead of the current one.

Think of it like...

It's like opening a new book page in a separate tab on your desk so you can read both pages side by side without losing your place.

┌───────────────┐
│ Current Page  │
│  (Tab 1)      │
└──────┬────────┘
       │ Click link with target="_blank"
       ▼
┌───────────────┐
│ New Page      │
│  (Tab 2)      │
└───────────────┘

Build-Up - 6 Steps

1

Foundation

Basic HTML Link Structure

Concept: Learn how to create a simple clickable link in HTML.

An HTML link uses the tag with an href attribute to specify the destination URL. For example: Visit Example. Clicking this link opens the page in the same tab by default.

Result

Clicking the link navigates the current tab to the new page.

Understanding the basic link structure is essential before changing how links behave.

2

Foundation

What Happens When You Click a Link

Concept: Understand the default browser behavior when clicking links.

By default, clicking a link replaces the current page with the linked page in the same browser tab. This means you lose the original page unless you use the back button.

Result

The current tab shows the new page, and the old page is replaced.

Knowing this default helps appreciate why opening links in new tabs can improve user experience.

3

Intermediate

Using target="_blank" Attribute

🤔Before reading on: do you think adding target="_blank" opens the link in the same tab or a new tab? Commit to your answer.

Concept: Learn how to make links open in new tabs using the target attribute.

Adding target="_blank" inside the tag tells the browser to open the link in a new tab or window. Example: Open in new tab.

Result

Clicking the link opens the destination page in a new browser tab, keeping the original page open.

Understanding this attribute is key to controlling link behavior and improving navigation.

4

Intermediate

Security Risks with target="_blank"

🤔Before reading on: do you think opening links with target="_blank" is always safe? Commit to your answer.

Concept: Learn about a security risk called 'tabnabbing' and how to prevent it.

When you open a link with target="_blank", the new page can access the original page via JavaScript, which can be risky. To prevent this, add rel="noopener" or rel="noreferrer" to the link. Example: Safe link.

Result

The new tab cannot manipulate the original page, protecting users from phishing attacks.

Knowing this prevents security vulnerabilities when opening links in new tabs.

5

Advanced

Accessibility Considerations for New Tabs

🤔Before reading on: do you think opening links in new tabs always helps all users? Commit to your answer.

Concept: Understand how opening links in new tabs affects users with disabilities and how to communicate it properly.

Opening links in new tabs can confuse screen reader users or keyboard-only users if not indicated. Use clear text or ARIA labels to inform users. For example: Example. Also, avoid opening new tabs unnecessarily.

Result

Users with assistive technologies understand link behavior and navigate confidently.

Accessibility improves user experience for everyone, especially those relying on assistive tools.

6

Expert

Browser Behavior and User Settings Impact

🤔Before reading on: do you think all browsers open target="_blank" links in new tabs the same way? Commit to your answer.

Concept: Learn how different browsers and user settings affect opening links in new tabs or windows.

Browsers may open target="_blank" links in new tabs or new windows depending on settings or extensions. Users can override this behavior. Also, some browsers limit how many tabs can open at once to prevent abuse.

Result

Understanding this helps developers set realistic expectations and design fallback behaviors.

Knowing browser differences prevents assumptions that can break user experience.

Under the Hood

When a link with target="_blank" is clicked, the browser creates a new browsing context (tab or window) and loads the linked page there. The rel="noopener" attribute severs the JavaScript connection between the original and new page by setting window.opener to null, preventing the new page from controlling the original.

Why designed this way?

Originally, target="_blank" was introduced to allow users to open multiple pages without losing their place. However, the security risk of tabnabbing was discovered later, leading to the addition of rel="noopener" to protect users. Browsers implemented these features to balance usability and security.

┌───────────────┐          ┌───────────────┐
│ Original Tab  │─────────▶│ New Tab       │
│ (window.opener)│         │ (target="_blank")│
└──────┬────────┘          └──────┬────────┘
       │ rel="noopener" severs connection
       ▼
window.opener = null

Myth Busters - 4 Common Misconceptions

Quick: Does target="_blank" always open a new tab, never a new window? Commit yes or no.

Common Belief: target="_blank" always opens a new tab in every browser.

Reality: Browsers may open a new window instead of a tab depending on user settings or browser behavior.

Why it matters: Assuming it always opens a tab can cause layout or user experience issues if a new window appears unexpectedly.

Quick: Is it safe to use target="_blank" without any other attributes? Commit yes or no.

Common Belief: Using target="_blank" alone is safe and has no security risks.

Reality: Without rel="noopener" or rel="noreferrer", the new page can access and manipulate the original page, risking phishing attacks.

Why it matters: Ignoring this can expose users to malicious sites stealing information or changing the original page.

Quick: Does opening links in new tabs always improve user experience? Commit yes or no.

Common Belief: Opening links in new tabs is always better for users.

Reality: Opening new tabs unexpectedly can confuse some users, especially those using screen readers or keyboard navigation, if not communicated properly.

Why it matters: Poor communication can frustrate users and reduce accessibility.

Quick: Does rel="noopener" affect SEO or link ranking? Commit yes or no.

Common Belief: Adding rel="noopener" changes how search engines rank or follow links.

Reality: rel="noopener" only affects JavaScript behavior and security; it does not impact SEO or link ranking.

Why it matters: Misunderstanding this may cause developers to avoid using it, risking security.

Expert Zone

1

Some browsers optimize performance by reusing tabs opened with target="_blank" if the same URL is clicked multiple times.

2

Using rel="noreferrer" not only prevents opener access but also hides the referrer URL from the new page, which can affect analytics.

3

Opening many links with target="_blank" simultaneously can trigger browser popup blockers or degrade user experience.

When NOT to use

Avoid opening links in new tabs when the user expects to stay in the same context, such as form submissions or navigation within a single-page app. Instead, use client-side routing or modals. Also, do not open new tabs for internal links unless necessary.

Production Patterns

In professional websites, target="_blank" is used for external links to third-party sites, combined with rel="noopener noreferrer" for security. Internal navigation usually stays in the same tab. Accessibility notices or icons often accompany links opening new tabs to inform users.

Connections

Browser Security

target="_blank" with rel="noopener" is a security feature to prevent tabnabbing attacks.

Understanding how browsers isolate tabs helps grasp why rel="noopener" is critical for safe link behavior.

User Experience Design

Opening links in new tabs affects how users navigate and multitask on websites.

Knowing user behavior and expectations guides when to open links in new tabs versus the same tab.

Operating System Window Management

Browser tabs and windows are managed by the OS, which influences how new tabs or windows appear.

Recognizing OS-level control explains why link behavior can differ across devices and settings.

Common Pitfalls

#1 Opening links with target="_blank" but forgetting rel="noopener" causes security risks.

Wrong approach:

Unsafe Link

Correct approach:

Safe Link

Root cause:

Not knowing that the new tab can access the original page via window.opener.

#2 Opening all links in new tabs regardless of context confuses users.

Wrong approach:

Internal Link

Correct approach:

Internal Link

Root cause:

Misunderstanding when new tabs improve versus harm user experience.

#3 Assuming target="_blank" always opens a new tab, ignoring browser or user settings.

Wrong approach:

Relying on target="_blank" to open tabs without testing across browsers.

Correct approach:

Test link behavior on multiple browsers and inform users if behavior varies.

Root cause:

Overlooking browser differences and user control over tab/window opening.

Key Takeaways

Adding target="_blank" to a link opens it in a new browser tab or window, improving multitasking.

Always include rel="noopener" or rel="noreferrer" with target="_blank" to protect users from security risks.

Opening links in new tabs should be used thoughtfully, especially considering accessibility and user expectations.

Browser and user settings can change how new tabs or windows behave, so test your links widely.

Clear communication about link behavior helps all users navigate your site confidently and safely.