How to upload documents to Claude on Claude

beginner 8 min read Updated 2026-03-18

Quick Answer

Upload documents to Claude by clicking the attachment icon (paperclip) in the chat interface, selecting your file, and waiting for it to process. Claude supports various file formats including PDFs, text files, and spreadsheets up to certain size limits.

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Prerequisites

Active Claude account or access to Claude.ai
Documents in supported formats (PDF, TXT, DOCX, CSV, etc.)
Stable internet connection

Step-by-Step Instructions

Access the Claude chat interface

Navigate to claude.ai and log into your account. Click on Start new conversation or open an existing chat where you want to upload your document.

Make sure you're using a supported browser like Chrome, Firefox, or Safari for best results.

Locate the attachment button

Look for the paperclip icon or attachment button in the message input area at the bottom of the chat interface. This icon is typically located to the left of the text input field.

Click the attachment icon

Click on the paperclip icon to open the file upload dialog. This will open your device's file browser where you can select documents to upload.

You can also drag and drop files directly into the chat window in most browsers.

Select your document

Browse through your files and select the document you want to upload. Claude supports formats including PDF, TXT, DOCX, CSV, RTF, and various image formats. Click Open to confirm your selection.

Check file size limits - typically documents should be under 10MB for optimal processing.

Wait for upload and processing

After selecting your file, Claude will begin uploading and processing the document. You'll see a progress indicator and then a preview or confirmation that the file has been successfully attached to your conversation.

Larger documents may take longer to process, so be patient during this step.

Verify the upload

Once uploaded, you should see the document name displayed in the chat interface, often with a small document icon or file preview. The document is now ready for Claude to analyze and discuss.

Start asking questions about your document

Type your question or request in the message box and press Enter or click Send. You can ask Claude to summarize, analyze, extract information, or answer questions about the uploaded document content.

Be specific in your requests - ask Claude to focus on particular sections or types of information you need.

Common Issues & Troubleshooting

File upload fails or shows an error

Check that your file is in a supported format and under the size limit. Try refreshing the page and uploading again, or convert your file to a different supported format like PDF.

Document appears uploaded but Claude can't read it

Ensure your document isn't password protected or corrupted. For scanned PDFs, make sure they have searchable text rather than just images. Try re-saving or converting the document.

Attachment button is missing or grayed out

Refresh the page or try using a different browser. Some browser extensions or ad blockers may interfere with the upload functionality. Clear your browser cache and cookies for claude.ai.

Upload is very slow or times out

Check your internet connection and try uploading smaller files first. Large documents may need to be split into smaller sections or compressed before uploading.

Prices mentioned in this guide are pulled from current plan data and may change. Always verify on the official Claude website before purchasing.

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