Reduce PDF Size for Email — Free Online
Reduce PDF size to fit Gmail (25MB), Outlook (20MB), Yahoo (25MB) and most enterprise email limits — free, in your browser. Drop a PDF, choose your target preset, and download a smaller version that attaches without bouncing. The tool downsamples images, removes duplicate fonts, and re-encodes streams while keeping text searchable and selectable. For attachments aimed at corporate inboxes (often 10MB cap), use the high-compression preset. For Gmail (25MB) the medium preset usually suffices. Compression is 100% client-side, so confidential contracts, financial reports, and signed documents never leave your device.
How to reduce pdf size for email
- Drop your PDF file into the tool above — it loads locally with pdf-lib.
- Pick the option that matches "reduce pdf size for email" (page range, size target, or output format).
- Click the action button and download the new PDF when processing finishes.
Common use cases
- Sharing only the relevant pages of a long contract or report
- Meeting strict file-size limits on government or university portals
- Combining or separating chapters of scanned books and manuals
- Preparing PDFs for email attachment under Gmail and Outlook caps
- Cleaning up scanned documents before archiving or signing
Frequently asked questions
What is the maximum PDF size for Gmail?
Gmail accepts 25MB attachments. Larger files are auto-uploaded to Google Drive and a link is shared instead.
Why does my PDF bounce in Outlook?
Outlook caps attachments at 20MB by default and many corporate servers cap at 10MB. Use the high-compression preset.
Can I email multiple PDFs together?
Compress each individually, then ZIP them. Most email systems accept ZIPs up to the same limit.
Will the recipient see any quality loss?
On screen, almost none with the medium preset. Text remains crisp and selectable.