UploadThing is a file-upload infrastructure product built specifically for the modern TypeScript/Next.js ecosystem, giving developers a hosted upload API and CDN without wiring up S3 or a custom upload server themselves — popular in the indie-hacker and small-SaaS community building on Next.js. Our engine detects it through 1 script pattern, 2 HTML patterns, and 1 CDN domain tied to its client SDK and asset-delivery infrastructure. Documented at uploadthing.com.
Paste any URL to instantly detect whether it was built with Uploadthing. Our engine checks 4 technical signals.
Uploadthing is used across many industries. These are the most common website types built on this platform:
Businesses of all sizes
Fast, reliable site building with professional results
Designers and developers
Powerful tools with minimal setup
Startups
Quick launch with scalable infrastructure
Content creators
Beautiful presentation for your work
Every Uploadthing website leaves distinctive technical fingerprints. Here's what to look for:
CDN Domains
Network requests to these domains are a reliable indicator:
utfs\.ioJavaScript Patterns
1 script pattern linked to Uploadthing
HTML Attributes
2 HTML patterns in the page source
Explore how Uploadthing compares to similar storage tools:
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