How to Compress a PDF for Email (Under 10 MB or 25 MB)
Reduce your PDF file size to meet Gmail, Outlook, and Yahoo Mail attachment limits. Free, browser-based, no upload to servers.
If your PDF is bouncing back as "attachment too large", you need to compress it before sending. FixMyPDF's compressor can typically cut a PDF's size by 50–80%, bringing most files under Gmail's 25 MB limit or Outlook's 20 MB limit in seconds.
Email Attachment Limits You Need to Know
Different email providers have different limits: Gmail allows up to 25 MB per email; Outlook/Hotmail allows 20 MB; Yahoo Mail allows 25 MB; corporate Exchange servers are often set to 10 MB or lower by IT departments. If your recipient is on a corporate email, target under 10 MB to be safe.
How Much Can You Compress a PDF?
Results depend on what's inside your PDF. A scanned document (photos of pages) can shrink 60–80%. A designed PDF with charts and photos typically shrinks 40–60%. A text-only PDF is already small and may only shrink 10–20%. Our compressor shows you the original and compressed size so you know exactly what you've achieved.
Step-by-Step: Compress for Email
Go to fixmypdf.in/tools/compressor, upload your PDF, select "High" compression for email (it prioritises file size over image quality — text stays sharp), click "Compress PDF", and download the result. The whole process takes under 30 seconds for most documents.
Still Too Large After Compression?
If the PDF is still over the limit after High compression, the next step is splitting. Use our PDF splitter to divide the document into parts — send Chapter 1 in one email and Chapter 2 in another. Alternatively, upload to Google Drive and share a link instead of attaching.
Does Compression Affect Email Signature Verification?
If your PDF was digitally signed (with an official certificate, not just a drawn signature), re-compression will invalidate the signature because the file bytes change. In that case, send the original as a Google Drive link rather than compressing it. For documents with hand-drawn or image signatures, compression is fine.
Compressing Multiple PDFs for Email
If you need to email multiple PDFs, consider merging them first, then compressing the combined file — one attachment is easier for recipients than several. Or compress each individually and attach them all if they're each under the size limit.
Privacy Note
Our compressor processes your PDF entirely in your browser. The file is never uploaded to FixMyPDF servers — so confidential contracts, medical records, or financial statements stay completely private during compression.
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