File upload

A file-upload form with client-side validation — a required PNG/JPEG/PDF input capped at 5 MB and an optional multiple-file input. Everything is checked on-device; nothing is uploaded.

Download this form as a standalone HTML file

Demo endpoint: submissions are validated server-side and returned as success, but nothing is stored, emailed, or forwarded.

FileUploadForm.tsx

Embed this form

It's a single self-contained HTML file (inlined CSS, native validation, no external requests). Download it, host it on your own site, and drop it into any page with an iframe.

iframe embed

<!-- Download upload.html, host it on your site, then embed the form anywhere: -->
<iframe
  src="/path/to/upload.html"
  title="File Upload Form"
  width="100%"
  height="640"
  loading="lazy"
  style="border:0">
</iframe>