Edit PDF Attachments - Remove Embedded Files from PDF

View PDF attachments, remove embedded files from PDF documents, and save a cleaned copy privately.

Click to select PDF or drag and drop

Your files never leave your device.

Edit PDF Attachments and Remove Embedded Files

What this tool does

Some PDFs contain embedded files that are separate from the visible pages. These PDF attachments can include spreadsheets, source documents, XML files, images, archives, or older drafts. This tool lets you inspect the attachment list and remove embedded files from a PDF when they are unnecessary, outdated, sensitive, or too large to share.

How to use it

Upload a PDF that may contain attachments. The tool reads the embedded file list in your browser and displays available attachment details. Select the attachments you want to remove, then save a new PDF. If the document has no embedded files, the tool will let you know so you can use another cleanup tool instead.

Common use cases

Edit PDF attachments before emailing contracts, submitting compliance documents, publishing reports, or archiving client files. Removing unused embedded files can reduce file size, prevent accidental disclosure, and make a PDF easier to review. It is especially helpful when a PDF was exported from office software or document management systems.

Privacy and output details

The PDF is processed locally with no upload. The output is a cleaned copy of the PDF with selected attachments removed. Page text, images, and layout are not intentionally changed by this attachment editor, and your original source file remains on your device exactly as it was.

Related tools: use Extract Attachments to save embedded files first, Add Attachments to embed new files, or Sanitize PDF for broader privacy cleanup.

What are PDF Attachments?

PDF attachments are files embedded within a PDF document that can be opened, viewed, or extracted separately. Unlike regular PDF content, attachments are stored as separate files within the PDF container.

Common types of PDF attachments include:

  • Supporting Documents: Spreadsheets, Word files, or presentations referenced in the PDF
  • Source Files: Original images, drawings, or design files
  • Certificates: Digital certificates or signatures
  • Metadata Files: XML, JSON, or configuration files
  • Multi-media: Audio, video, or 3D model files
  • Archives: ZIP files containing related documents

Key Features

  • ✓ View all embedded files
  • ✓ Preview attachment details
  • ✓ Remove unwanted attachments
  • ✓ No file size limits
  • ✓ 100% secure processing
  • ✓ Works completely offline

How to Edit PDF Attachments

1

Upload PDF

Select your PDF document with attachments. All processing happens locally - your files never leave your device.

2

View Attachments

See all embedded files, including file names, sizes, types, and creation dates. Preview available for supported formats.

3

Manage & Save

Select which attachments to keep or remove. Download your cleaned PDF with reduced file size and improved security.

Best Practices for PDF Attachments

When to Remove Attachments

  • Before sharing sensitive documents publicly
  • To reduce file size for email attachments
  • When attachments contain outdated information
  • For security compliance and data minimization

Security Considerations

  • Always review attachments before sharing PDFs
  • Remove unnecessary metadata for privacy protection
  • Use PDF Sanitizer for complete cleaning

Frequently Asked Questions

Our tool can detect and manage most common attachment types:

  • Documents: PDF, DOC, DOCX, XLS, XLSX, PPT, PPTX
  • Images: JPG, PNG, GIF, BMP, TIFF, SVG
  • Archives: ZIP, RAR, 7Z, TAR
  • Media: MP3, MP4, WAV, AVI, MOV
  • Other: TXT, XML, JSON, CSV, EXE, DLL

Note: While all attachments can be removed, preview is limited to certain file types.

No, removing attachments only affects the embedded files, not the main PDF content. The visible pages, text, images, and formatting remain completely unchanged. However:

  • Any hyperlinks pointing to removed attachments will be broken
  • Annotations referencing attachments may become invalid
  • The PDF file size will be reduced proportionally to removed attachments
  • Original PDF quality and layout are preserved

Yes, we offer separate tools for extracting attachments:

For workflow: First extract important attachments, then use this tool to clean the PDF.

No, there are no file size limits. Our tool processes files entirely in your browser, so the only limitation is your device's memory. However, for optimal performance:

  • Recommended: PDFs under 500MB for fast processing
  • Large files (1GB+): Processing may take longer depending on your device
  • Very complex PDFs: May require more system resources
  • For very large files, consider using Split PDF first

We prioritize your privacy and security through multiple measures:

  • Local Processing: All file processing happens in your browser using JavaScript
  • No Uploads: Your files never leave your device or reach our servers
  • No Tracking: We don't collect or store your PDF files or content
  • Open Source Libraries: We use trusted, open-source PDF libraries
  • Client-side Encryption: Your data stays encrypted on your device

For maximum security, use our PDF Sanitizer tool to remove all hidden data.

Related guide

How to remove embedded files from a PDF

Learn what PDF attachments are, why embedded files can be risky, and how to remove them without uploading your PDF.

Read the PDF attachments guide

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