Email Attachment Size Limits in 2026
Before compressing, it's useful to know what limit you're actually working against:
| Email Service | Attachment Limit | Notes |
|---|---|---|
| Gmail | 25 MB | Larger files must use Google Drive link |
| Outlook / Hotmail | 20 MB | Per attachment |
| Yahoo Mail | 25 MB | Total per email |
| Apple Mail (iCloud) | 20 MB | Uses Mail Drop for larger files |
| Corporate email (Exchange) | 10–30 MB | Set by IT department, varies widely |
| 100 MB | Documents, not in media tab |
Why Are PDFs So Large?
Understanding what makes a PDF large helps you choose the right compression setting:
- Scanned documents — each page is essentially a photograph. A colour scan at 300 DPI produces 2–5 MB per page. A 10-page scanned contract can easily be 30–50 MB.
- Embedded fonts — PDFs embed entire font files for rendering accuracy. This adds 100 KB–1 MB per font family.
- High-resolution images — reports and presentations with photos or charts at print resolution are much larger than screen resolution requires.
- Redundant data — revision history, undo data, and embedded metadata from authoring tools (Word, InDesign) can add several MB of invisible overhead.
How to Compress a PDF for Email Using Rifix
- Go to rifixpdf.xyz/compress
- Click Open PDF and select your file
- Adjust the Quality slider:
- 80–90% — minimal compression, slight size reduction. Best for presentations with charts or logos.
- 60–75% — good balance. Typical scanned documents look identical at this setting on screen.
- 40–55% — aggressive compression. Use if you need maximum size reduction and the PDF is text-heavy.
- Click Compress PDF
- Check the output file size — if still too large, re-compress at a lower quality setting
- Download and attach to your email
A 10-page colour scanned contract at original quality: 28 MB. After Rifix compression at 65%: 3.2 MB. The text remains perfectly readable. The compression ratio depends heavily on how much colour and how many images are in the original.
When Compression Isn't Enough
If your PDF is very long (50+ pages) and still too large after compression, consider splitting it:
- Go to rifixpdf.xyz/split
- Split the document into two or three smaller files
- Send as separate attachments, or use a file-sharing link instead
For very large files (over 100 MB), email isn't the right delivery method. Upload to Google Drive, Dropbox, or OneDrive and share a link instead — this also avoids any size limits entirely.
Does Compression Affect Print Quality?
For screen viewing and most office printing, no. Compression at 60–75% reduces image resolution from 300 DPI (print quality) to roughly 100–150 DPI, which is still sharp on screen and acceptable for standard A4 printing. For professional print purposes (brochures, contracts intended for archiving), use 85–90% or keep the original.
Compressing on Mobile
Rifix works fully in mobile browsers. If you've scanned a document on your phone and it's too large to email directly:
- Open Safari or Chrome on your phone
- Go to rifixpdf.xyz/compress
- Tap Open PDF and select from your Files app
- Compress and download — then attach from your Downloads folder
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