5 min readUpdated Aug 6, 2026Beginner
File Uploads
Learn about File Uploads in this comprehensive lesson.
You can upload files directly into a chat and ask Claude to read, summarize, or work with them.
- Supported types include PDF, Word (.docx), Excel (.xlsx), CSV, TXT, and images (PNG/JPG)
- Click the '+' or paperclip icon near the message box to attach a file
- Claude can extract text, analyze data, describe images, and combine multiple files in one answer
For files you'll reuse often, upload them to a Project's Knowledge base instead of re-uploading every time.