Link to Us
Free brand assets, an embeddable life expectancy widget, and citation guidelines — for anyone who wants to reference, review or link to Lifespan Check.
Why readers link to Lifespan Check
Built on actuarial life tables and public WHO/World Bank/SSA data, documented in full on our methodology page.
No account, paywall or email capture — readers get a result in under two minutes.
All calculation happens in the browser — nothing is stored or sold, which we document transparently.
Embed the mini calculator
A free, dependency-free widget for retirement-planning, health or finance sites. Vanilla JS, no jQuery, no external libraries, loads instantly.
Note for publishers: because the widget renders inside an iframe, its "Powered by Lifespan Check" credit is a real, crawlable link — but links inside iframed third-party content are generally not counted by search engines as a link from your page. If you'd like the SEO credit to count, please also add a plain text link to lifespancheck.com somewhere in your own page content.
Brand assets
Please keep the leaf mark's proportions and colors intact, and maintain clear space around it roughly equal to the leaf's height. Don't recolor the wordmark or use the assets in a way that implies endorsement of another product.
Citing our data or methodology
If you're referencing our methodology, figures or approach in an article, paper or blog post, a plain link to the relevant page is the most useful citation:
Please attribute specific figures to their original source (WHO, World Bank, SSA — linked on the methodology page) rather than to Lifespan Check directly, since we aggregate rather than originate that underlying data.
FAQ
Can I embed the Lifespan Check widget on my site?
Yes, free of charge, for any non-deceptive use. Use the iframe or script embed code above — no account or API key required.
Do you require a specific link back?
The widget includes a small "Powered by Lifespan Check" credit link. Beyond that we don't require anything — a plain link to lifespancheck.com with any reasonable anchor text is appreciated.
Can I use your logo or data in an article?
Yes — the brand assets above are free to use when referencing or reviewing Lifespan Check, and our methodology page is citable for journalism, research and educational content.
Contact
Questions about a partnership, data request or press inquiry? Email hello@lifespancheck.com.