How do I send a PDF that is too large to email?

You have two options: split the PDF into smaller parts using the PDF Splitter, or compress the PDF to reduce its file size using the PDF Compressor. Splitting creates multiple files; compression shrinks the original.

What is Gmail's maximum attachment size?

Gmail allows attachments up to 25MB. For files larger than 25MB, Gmail automatically inserts a Google Drive link instead of a direct attachment.

What is Outlook's maximum attachment size?

Outlook.com allows attachments up to 20MB. Microsoft 365 Business accounts may have different limits set by administrators.

Should I split or compress a large PDF for email?

Try compressing first — it is simpler since the recipient gets one file. If compression does not bring the size below the email limit, split the PDF into parts.

Can the recipient reassemble the split PDF parts?

Yes. The recipient can use the FixTools PDF Merger to combine the parts back into one document after receiving all emails.

Browse tools

Free · Fast · Privacy-first

Split a PDF for Email Attachments

Most email providers cap attachments at 10–25MB. If your PDF is too large to attach, split it into parts that individually stay under the limit — or compress it first. FixTools makes both options quick and free.

⚡ Use Tool Now How it works

Cost: Free forever
Sign-up: Not required
Processing: In your browser
Privacy: Files stay local

⚡

Split into email-friendly file sizes

🔒

No attachment size workarounds needed

✨

Compress after splitting as an option

PDF Tool

PDF Splitter

All processing happens in your browser — your files are never uploaded to any server.

🚀Open PDF Splitter

100% Free · No account · Works on any device

How to use this tool

💡

Upload your large PDF and split it by page range or equal-size chunks so each part fits within your email provider's attachment limit. Alternatively, use PDF Compressor to shrink the file without splitting.

How It Works

Step-by-step guide to split a pdf for email attachments:

1
Check your email size limit
Gmail allows 25MB, Outlook allows 20MB, Yahoo allows 25MB. Note the limit for your email provider before deciding whether to split or compress.
2
Upload your large PDF
Open the PDF Splitter and upload the PDF that exceeds the email size limit.
3
Split into equal-size parts
Use the "split every N pages" option to divide the PDF into parts that each stay under the email size cap.
4
Send parts in separate emails
Attach each part to a separate email. Let the recipient know how many parts to expect.