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File Upload Patterns

Drag-and-drop file upload components with image previews, progress tracking, multi-file support, and server-side handling.

What's Included#

  • Drag-and-drop upload zone using react-dropzone with file type and size validation
  • Image upload with thumbnail previews using Object URLs
  • Per-file upload progress tracking with XHR progress events
  • Multi-file upload with individual status indicators (pending, uploading, complete, error)
  • Server-side upload handler with file validation, unique naming, and storage

Usage#

Via CLI#

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Via AI Assistant#

Ask your AI assistant:

  • "Use the file upload pattern from Bootspring"
  • "Apply the Bootspring file upload pattern to my project"

Key Considerations#

  • Validate file types (MIME) and sizes on both client and server for security
  • Set reasonable file size limits and display clear error messages when exceeded
  • Show progress indicators for large file uploads to keep users informed
  • Revoke Object URLs when files are removed to prevent memory leaks
  • Allow retrying failed uploads without requiring users to re-select files

Related Patterns#