SizePDFSizePDF

Compress PDF for email

Make scanned certificates and photo documents small enough to attach. Secure local compression — nothing is uploaded to a server.

  • 100% local
  • No upload
  • Free to use
Target size
Quality

Compression starts when you select a file · max 20.0 MB, 50 pages · files stay on your device

Simple flow

How it works

Secure, local compression for scanned documents — no account, no upload.

1

Pick an email-friendly size

Start with 1MB, or choose 500KB / 2MB to match your mailbox limit.

2

Select the attachment

Add the PDF on your device. Compression starts automatically.

3

Attach & send

Download the smaller file and attach it to your email.

100% local processing · Files never leave your device

Questions

FAQ

Privacy, quality, and what to expect from local compression.

What size should I use for email?

1MB is a safe default. Use 500KB for stricter inboxes, or 2MB when larger files are allowed.

Is email attachment compression private?

Yes. SizePDF runs locally. Your document never leaves the browser.

Can I compress scanned PDFs for email?

Yes — scanned and photo PDFs are ideal for this tool.

Will the recipient see a normal PDF?

Yes. They receive a standard PDF file, usually image-based after strong compression.