Formspree is one of the earliest and most widely used form-backend services for static sites, letting developers accept form submissions (contact forms, signups) without writing server code by pointing the form's action at a Formspree endpoint — commonly seen on Jekyll, Hugo, and hand-coded static sites. Our engine detects it through 1 script pattern and 1 HTML pattern tied to the Formspree endpoint URL referenced in form markup. Documented at formspree.io.
Detect Formspree Websites — Free Tool
Enter any URL to check if it was built with Formspree. Instant results, no account required.
How we detect Formspree — see our methodology: AI Influence Score calculation, evidence tiers, and fingerprint signal types.
How to Detect Formspree Websites
Script Patterns
1 patterns
HTML Patterns
1 patterns
1. Check the Page Source
Open the website in your browser, right-click, and select "View Page Source". Search for formspree-specific patterns in the HTML.
2. Look for Script Files
Check the Network tab in DevTools for JavaScript files loaded from Formspree domains.
4. Use AI Website Detector (Easiest)
Our automated scanner checks all these signals at once and gives you an instant confidence score. Just enter any URL above.
Frequently Asked Questions
Is this website built with Formspree?
You can detect if any website was built with Formspree by using our free scanner above. Just enter the URL and we'll analyze HTML patterns, JavaScript files, CDN domains, and HTTP headers to determine if Formspree was used — with a confidence score.
How to detect if a website was built with Formspree?
There are several ways to detect Formspree: (1) View the page source and look for Formspree-specific class names or script URLs, (2) Check the Network tab in DevTools for requests to Formspree CDN domains, (3) Use our free tool — we check 2 detection signals automatically.
What websites are built with Formspree?
Formspree is used by thousands of websites worldwide. Our scanner has detected many Formspree-built sites across different industries. You can scan any URL to check if it uses Formspree.
How accurate is the Formspree detection?
Our Formspree detection engine checks 2 unique fingerprint signals, achieving high confidence results. We score each match and return a confidence percentage so you know how certain the detection is.
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Detection Info
- Category
- Form
- Signals Used
- 2 patterns
- Accuracy
- High
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