Free Link Expiration & Countdown Redirect Generator
Generate a JavaScript snippet that auto-expires a URL and redirects visitors after a set date or countdown - no server required.
Why You Need an Expiring Link
Time-limited offers are one of the most powerful conversion tools in digital marketing. Flash sales, webinar replays, cart-close deadlines, early bird pricing, and limited enrollment windows all rely on scarcity to drive action. But if your landing page keeps showing the offer after the deadline, you lose credibility and give slow-movers a free pass. An expiring link snippet closes that loophole automatically.
How the Snippet Works
This tool generates a small JavaScript snippet that you paste into the <head> of your HTML landing page. When a visitor loads the page, the script instantly checks the current time against a hardcoded UTC expiration timestamp. If the deadline has passed, the visitor is redirected to your fallback URL (a waitlist, a sold-out page, or the next launch). If the offer is still active, they are redirected to the live sales page.
The timestamp is burned into the code as a UTC millisecond value, so the expiration is globally consistent across all time zones. A user in Tokyo and one in New York will see the offer expire at exactly the same moment.
Best Use Cases for Expiring Links
- Cart Close & Enrollment Deadlines: Online course launches, mastermind enrollment windows, and cohort-based programs where the cart closes at a specific time.
- Limited-Time Sales: Black Friday, Cyber Monday, and flash sales where the discount code or pricing expires at midnight.
- Webinar Replay Windows: Expire your replay page after a 48- or 72-hour window to create urgency.
- Event Registration: Automatically redirect to a "registration is now closed" page when ticket sales end.
- Countdown-Gated Content: Release a free resource for a limited window only, then redirect to a paid version or waitlist after it closes. Pair with our Link Rotator to distribute traffic across multiple URLs during the live window.
How to Deploy the Snippet
Host a simple HTML file on your web server or in your landing page tool's custom code settings. Paste the generated snippet into the <head> tag. Visitors will be instantly redirected before any visual content renders, creating a seamless experience with no visible "loading" state. To track which campaign sent traffic to the expiring page, make sure your Active URL includes UTM parameters before generating the snippet.
Frequently Asked Questions
Does this use server time or client time?
Client time. The snippet compares the UTC expiration timestamp against the visitor's browser clock (Date.now()). This is reliable for nearly all legitimate use cases, but can technically be bypassed by manually changing the system clock. For critical e-commerce deadlines, use a server-side solution instead.
Can I use this with any website platform?
Yes. Any platform that lets you inject custom HTML or JavaScript into the <head> tag will work - including WordPress, Webflow, Squarespace, ClickFunnels, Leadpages, and raw HTML pages.
Does the generator work in the user's local timezone?
Yes. The tool converts your local datetime input to a UTC millisecond timestamp. The snippet compares this against the visitor's system clock in UTC as well, so a 11:59 PM EST deadline correctly expires at the right time no matter where the visitor is located.
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