Home / PDF Tools / PDF Attachments
PDF Attachments
List, extract, add and remove files embedded inside a PDF.
Free, no uploads, no sign-up. Runs 100% in your browser.
How PDF Attachments works
pdf-lib reads the embedded files name tree and file attachment annotations. New files are stored as compressed embedded file streams with their name, type and description.
Input: PDF, Any file. Output: PDF, ZIP.
How to use PDF Attachments
- Drop your PDF onto the PDF Attachments area, or click to choose it.
- Wait a moment while page thumbnails render locally.
- Choose the pages and options you need. Previews update as you go.
- Press the main action button and download the finished PDF.
Tips
- Encrypted PDFs must be unlocked first with Unlock PDF.
- Large scanned PDFs are mostly images. Compress PDF shrinks them the most.
- Your original file is never modified; you always download a new copy.
PDF Attachments FAQ
- Are my files uploaded?
- No. This tool runs entirely in your browser tab. Files are read from your disk into memory and the result is generated locally.
- Is it free? Are there limits or watermarks?
- Free and open source (MIT). There are no file-size caps, daily quotas, accounts or watermarks.
- Does it work offline?
- Yes, once the page (and any engine it needs) has loaded, it keeps working without a connection thanks to the service worker cache.
Related tools
- Sanitize PDF: Remove JavaScript, embedded files, links, metadata, comments and hidden layers before sharing.
- PDF Inspector: See page sizes, fonts and whether they are embedded, images, scripts, version, encryption and word counts.
- E-Invoice Generator: Create EN 16931 e-invoices: Factur-X / ZUGFeRD PDF with embedded XML, or XRechnung in CII or UBL.
- Merge PDF: Combine multiple PDFs into one ordered document with drag-and-drop sorting.