Minimal Hono File Upload Example

A minimal server-rendered file upload example using Hono and Hono JSX.

Features

  • Simple file upload form with HTML5 file input
  • Server-side rendering with Hono JSX
  • File processing and content display
  • Error handling for upload failures
  • Responsive styling

How it works

  1. GET /: Displays the upload form
  2. POST /upload: Processes the uploaded file and shows results

File Processing

The server:

  • Accepts any file type via multipart/form-data
  • Reads the file content as text
  • Displays file metadata (name, size, type)
  • Shows the file content (works best with text files)

Usage

  1. Visit the root URL to see the upload form
  2. Select a file using the file input
  3. Click "Upload File" to submit
  4. View the file information and content on the results page

Technical Details

  • Built with Hono 4.0.0 and Hono JSX
  • Uses c.req.parseBody() to handle multipart form data
  • Inline CSS for styling
  • Error handling for missing files and processing errors