Connect website visits to completed payments. See which source, campaign, and landing page creates sales — then spend your time and budget on what works.
No credit card. Cookieless first-party tracking, with a session-only option.
Try it on your website
Enter any public page. DataFast will inspect its HTML for common analytics tools and show a real result—free, with no account required.
Example revenue dashboard
Sample dataVisitors
12,847
Pageviews
34,291
Sales
327
Paying Sources
5
Revenue
$8,432
Top Sources
Top Pages
Try the live demo — no signup required
<1KB
Gzipped Script
1 line
To Install
0
Cookies
$0
To Start
Three steps. That's it.
One line of code. Under 1KB gzipped. Loads in milliseconds.
<script defer src="https://datafast.app/js/script.js" data-website-id="YOUR_ID"></script>Use one server-side API call from Stripe, LemonSqueezy, Paddle, or your own checkout.
See which sources bring paying customers and invest in what works.
Send successful payments through the revenue API and attribute them to the source, campaign, or page that introduced the customer.
Our tracking script is under 1KB gzipped and loads asynchronously to stay out of your critical path.
No cookies or cross-site tracking. A first-party opaque ID keeps revenue attribution connected for 30 days.
See who's on your site right now. Track visitors, pageviews, sources, and revenue in real-time.
Compare channels by the revenue they create, not by clicks that never convert.
Inspect the tracker and host the stack yourself when you need full data ownership.
Where did this sale come from?
Attribute Stripe revenue to the source and campaign that introduced the customer.
Which page creates customers?
Compare landing pages by revenue, not pageviews or bounce rate alone.
Where should I invest next?
Put more time and budget into channels with proven revenue per visitor.
DataFast is a revenue-first web analytics tool for founders. It connects website visits to completed payments so you can see which source, campaign, and landing page creates paying customers instead of stopping at traffic counts.
Yes. DataFast is free until you are ready to connect revenue, including 5,000 events per month with no credit card required. You only move to a paid plan when you start attributing completed payments.
DataFast is revenue-first. Instead of optimizing for clicks and pageviews, it connects website visits to completed payments so you can see which source, campaign, and landing page actually creates paying customers. The tracking script is under 1KB gzipped and it uses no cookies.
Yes, one line. You add a single script tag that is 652 bytes gzipped and loads asynchronously, so it stays out of your site's critical path. To attribute revenue you also make one server-side API call when a payment completes.
Yes. DataFast uses no cookies and no cross-site tracking. A first-party opaque ID keeps revenue attribution connected for 30 days, and a session-only option is available.
Yes. You can inspect the tracker and host the stack yourself when you need full data ownership.