Embed File in PDF

Attach any file inside a PDF so it travels with the document.

Select the PDF

Click to choose, or drop a file here

Related PDF tools

Fill & Sign PDFFill in a PDF form and sign it — type text, tick boxes, add dates, drop your signature and initials anywhere.Sign PDFDraw or type a signature and place it on the page.Redact PDFBlack out and permanently flatten sensitive areas.Protect PDFAdd a password to a PDF, encrypted with AES-256.

Embed File in PDF — frequently asked questions

Who can open the attachments?+

Any reader that supports PDF attachments — Acrobat, Preview, and the Extract Embedded Files tool here.

Does this increase the file size?+

Yes — the attachment bytes are stored in full inside the PDF.

Do you upload my files to a server?+

No — every tool here processes your files entirely on your device, and nothing is uploaded to a server. The AI tools that used to send extracted text to a server are currently disabled.

Is there a file size limit?+

There's no artificial limit we impose, but since processing happens in your browser, very large files (500+ MB or 1,000+ pages) are limited by your device's memory rather than by us.