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5 min read Deep Link
Definition
A deep link is a link that sends a user directly to a specific page, screen, item, or action instead of opening only a website homepage or an app’s default screen. Its purpose is to reduce extra navigation by taking the user closer to the content or task connected to the link.
On the web, a deep link can point to a specific page, such as a product page rather than the homepage. In mobile apps, it can open a particular destination inside an installed app, such as a message, product, profile, or settings screen.
How deep links work
A deep link contains a destination that a website, operating system, or app knows how to handle. What happens after the user taps it depends on the link type and device setup.
For a website deep link, the browser opens the requested URL. For an app deep link, the operating system checks whether an installed app can handle that destination. If it can, the app opens and routes the user to the matching screen.
Modern mobile implementations often use HTTPS URLs. Apple calls its verified implementation Universal Links, while Android uses Android App Links. If you want to understand how these concepts differ, see this guide to deep links vs Universal Links.
Apps can also use custom URL schemes such as exampleapp://product/123. These can route into an app, but they do not provide the same verified website-to-app association.
Why deep links matter
Deep links remove steps between a click and the intended destination. A user does not need to open an app, search for the right section, and locate the original content manually.
They are useful when context should survive the transition from a website, message, notification, advertisement, QR code, or another app. In mobile products, opening only the app home screen can break the user’s original intent.
Deep links can also support campaign measurement and re-engagement when analytics or attribution systems track the link and destination. Tracking is not a property of deep linking by itself.
Common requirements
A working app deep link needs a destination the app understands and routing logic that maps the incoming link to it.
Verified HTTPS links require additional setup. Android App Links establish a relationship between a website and Android app, while Apple Universal Links associate a website with an iOS app. Android uses Digital Asset Links for verified App Links, while Apple relies on associated-domain configuration between the app and website.
Teams should also define what happens when the app is not installed, the content no longer exists, or the user is signed out. Depending on the setup, the fallback may be a web page, app store page, login screen, or another supported destination.
Benefits
The main benefit is shorter navigation. Deep links can take users directly to the content they expected after clicking.
They can also preserve context across channels. A notification can open the related order, a social campaign can open the advertised item, and an email can take a user straight to an account screen.
For product teams, deep links create reusable entry points into important app destinations across ads, messages, QR codes, web pages, and push notifications where supported.
Limitations
Deep links depend on correct routing and platform configuration. A malformed URL, missing route, incorrect domain association, unsupported app version, or deleted destination can cause the link to fail or open somewhere unexpected.
Behavior can differ depending on whether the app is installed and whether the user is signed in. Custom URL schemes also lack the verified website-to-app relationship provided by Universal Links and Android App Links.
A message such as “deep link not supported” usually means the current app, operating system, or route cannot handle the requested link. The exact cause is application-specific.
How deep links are used
Deep links appear in ordinary web navigation and many mobile workflows. The common pattern is that the link points beyond a general entry page toward a specific destination.
- Websites: Open a specific article, product, category, or account page instead of the homepage.
- Mobile apps: Open a particular profile, conversation, product, video, or settings screen.
- Push notifications: Open the screen related to the alert. Teams testing these workflows across remote Android environments can also test push notifications on cloud phones.
- Email and messaging: Return the user to a particular workflow.
- Advertising: Send an existing app user to promoted content rather than only the app home screen.
- QR codes: Route a scan to a specific web page or supported app destination.
- Testing: Check whether each supported link opens the correct destination across app states and devices.
Android teams can validate App Links through Android Studio, Play Console, or ADB. Google Play Console also provides tools for creating, maintaining, and validating deep-link configurations.
For workflows that need the same app route tested across separate Android environments, Android cloud phones may also be useful. They can provide separate Android sessions for checking app behavior, links, and mobile workflows without relying on one physical device.
Related technologies
Universal Links are Apple’s HTTPS-based method for linking web URLs to destinations inside an iOS app. When configured correctly, the system can route supported website links to the associated app. For a more detailed comparison, read Deep Link vs Universal Link: What’s the Difference for Social Media?.
Android App Links are verified web links associated with an Android app so supported URLs can open corresponding app content.
Custom URL schemes use an app-specific scheme instead of a normal web address. They can still be deep links, but they are configured differently from verified web links.
Deferred deep linking aims to preserve the intended app destination even when the app is not installed at the first click. It usually requires additional routing or attribution logic beyond a basic deep link.
Key takeaways
A deep link is a destination-specific link. On a website, it usually points to a page deeper than the homepage. In an app, it can open a specific screen or piece of content instead of the app’s starting screen.
The term describes the linking behavior, not one single technology. Universal Links, Android App Links, custom URL schemes, redirects, and deferred routing are related implementations or mechanisms.
People Also Ask
What is a deep link example?
A deep link might be https://example.com/products/123, which opens a specific product rather than the website homepage. In a mobile app, the same idea could route the user directly to that product’s screen.
What is a deep link URL?
A deep link URL identifies a specific destination rather than a general starting point. It may be a normal HTTPS URL or, for some apps, a custom URL scheme recognized by the application.
What is a deep link in Android?
In Android, a deep link sends a user to a particular destination inside an app. Android also supports App Links, which are verified web URLs associated with a specific Android application.
What is a deep link in iOS?
On iOS, apps can handle deep links through mechanisms including custom URL schemes and Universal Links. Universal Links associate HTTPS website URLs with corresponding content inside an iOS app.
What is a deep link vs a hyperlink?
A hyperlink is any clickable link that points to another resource or location. A deep link is more specific because it points directly to content deeper within a website or app rather than only its main entry point.
What is a deep link redirect?
A deep link redirect is a routing step that sends a click toward the appropriate destination, such as an app screen, website, login page, or app store. The redirect is supporting logic around the deep link, not the definition of a deep link itself.
What is a deep link generator?
A deep link generator is a tool that creates or formats URLs according to an app’s supported deep-link structure. It cannot make an unsupported app screen linkable unless the app has routing configured for that destination.
What does “deep link not supported” mean?
“Deep link not supported” generally means the destination or link format cannot be handled in the current setup. Possible causes include an unsupported route, incorrect configuration, failed domain association, or an incompatible app version.
