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Paste a deep link to inspect its protocol, routing
structure, query parameters, and fallback behavior.
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Developer Tool
Deep Link Tester
Test custom URI schemes, Universal Links, and Android App Links in one place. Inspect routing, query parameters, fallback behavior, and device-specific outcomes before you ship a mobile campaign or app flow.
Tester
Inspect a deep link
Parse one deep link, estimate device behavior, and review route details instantly.
Output
Parsed deep link result
Protocol
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Host
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Path
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Parameters
0 items
- No parameters yet.
Behavior estimate
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- No behavior analysis yet.
Clean parsed output
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Coverage
What this tool checks
- Custom URI schemes such as `myapp://product/123`.
- Standard `https` deep links used for Universal Links and Android App Links.
- Query parameter parsing, duplicate parameter detection, and route inspection.
- Fallback URL structure and browser behavior estimates.
Quick Answer
What is a Deep Link Tester?
A deep link tester helps you inspect custom URI links before deployment so you can catch malformed schemes, broken app routes, missing fallback URLs, and parameter issues before users tap the link on a real device.
How It Works
How deep links work
Deep links can use custom URI schemes like `myapp://checkout`, iOS Universal Links, or Android App Links based on standard `https` URLs. When tapped, the operating system decides whether to open app content directly, route to the browser, or use a fallback page depending on app association, install state, and routing configuration.
This tester helps you inspect that routing shape by parsing the link, surfacing the scheme, host, path, parameters, and estimating how the same URL behaves across iOS, Android, and the browser.
Common Use Cases
Where deep link testing helps most
QA testing
Inspect links before release to catch malformed routes, parameter bugs, and bad fallback behavior.
Marketing campaigns
Check campaign links before launch so app routes and tracking parameters behave as expected.
Push notifications
Verify notification links open the right in-app destination instead of sending users to the wrong screen.
Email campaigns
Validate deep links and web fallbacks used in onboarding, reactivation, and promotional emails.
QR campaigns
Test QR destinations for app opening behavior, browser fallback, and route stability across devices.
Referral systems
Check share links, attribution parameters, and install fallback flows before inviting real users.
App onboarding
Validate signup, verification, and first-run routes used in user onboarding and account recovery flows.
Best Practices
Deep link testing best practices
Always test on real devices
Browser inspection is useful, but real-device testing still matters because app install state and operating system routing affect the final result.
Include fallback URLs
A clean web fallback improves the user journey when the app is unavailable or the operating system cannot hand the link to the app.
Validate tracking params
Make sure campaign, referral, and attribution parameters are preserved without duplicates, encoding issues, or accidental truncation.
Avoid redirect loops
Chains between app routes and web redirects can create broken experiences. Keep ownership of the route and fallback path clear.
Keep routes stable
Marketing links, push links, and referral URLs should remain stable so app routing does not break older campaigns or shared links.
Test iOS and Android separately
Universal Links and App Links do not behave identically, so it is worth testing platform-specific routing assumptions explicitly.
How To
How to use this tool
- 1. Paste a deep link into the tester, choose a device type, and optionally add a fallback URL or user agent preview.
- 2. Review the parsed protocol, host, path, query parameters, device behavior estimate, and fallback behavior.
FAQ
Frequently asked questions
What is a deep link tester?
A deep link tester is a tool that helps you inspect and validate mobile deep links before release. It shows how a link is structured and whether it is more likely to open an app or fall back to the web.
How do I test a custom URL scheme?
Paste the link using your app scheme, such as myapp://product/123, then inspect the parsed protocol, host, path, parameters, and estimated device behavior.
What are Universal Links?
Universal Links are iOS links that use standard https URLs and can open app content directly when your domain and app association are configured correctly.
Why does my deep link not open the app?
Deep links can fail because of missing app association, bad URI schemes, routing mismatches, malformed parameters, unsupported protocols, or missing fallback behavior.
Why use fallback URLs?
Fallback URLs help send users to a web page when the app is not installed or when the deep link cannot be handled on the current device.
Is this tool safe?
Yes. The parsing and validation logic run in your browser session. The tool does not need a backend call to inspect a deep link string.
TL;DR
Inspect deep links instantly, validate schemes and fallback URLs, and estimate how a link behaves on iOS, Android, or the browser. This tool helps QA, mobile growth, and developer teams catch routing issues before real users do.
- Free to use
- No signup required
- Custom schemes
- Universal Links
- App Links
- Fallback checks
- Browser based
· · Last reviewed: April 2026 · Built following Android Intent
URL syntax and Apple Universal Link standards.