Complete guide: Compress PDF for email
Gmail 25MB, Outlook 20MB, and Outlook.com 25MB explained with a fit‑or‑split workflow.
- Email preset targets
- Why 24 MB can still fail
- Automatic split if needed
PDF Guides
Short, practical guides for compressing, splitting, and preparing PDFs for email limits. All pages work without JavaScript.
Complete guide: Reduce scanned PDF size
Keep scanned pages readable while shrinking images and removing bloat.
- Image‑heavy tips
- Readability‑first approach
- Smart quality recommendations
Complete guide: Split PDF by size
Create PDF parts under a strict MB limit with stable naming and order.
- Size planning
- ZIP delivery
- Email‑ready parts
Complete guide: Rotate PDF pages online
Fix sideways pages, rotate in bulk, and keep page order intact.
- Rotate 90/180/270
- Bulk page ranges
- No text edits
Gmail attachment limit
Understand the 25MB limit and how to keep attachments deliverable.
- Limit overview
- Base64 overhead
- Safer targets
Outlook attachment limit
Why Outlook often caps at 20MB and how to avoid bounce errors.
- 20MB default
- Encoding overhead
- Split fallback
Split PDF for email
Make multi‑part PDFs for email attachments while keeping order.
- Attachment‑ready ZIP
- Ordered parts
- Custom size
Related tools
All PDF tools
Browse every PDFThin tool in one place.
Email-ready compression
Shrink PDFs to Gmail/Outlook limits with quality control.
Split by size
Split large PDFs into size-safe parts.
Organize PDF
Merge, rotate, delete, reorder, and split pages.
Popular guides
All PDF guides
Browse every step-by-step PDF guide.
Compress PDF for email (complete)
Step-by-step workflow for Gmail 25MB and Outlook 20MB limits.
Reduce scanned PDF size
Keep text readable while shrinking scanned documents.
Split PDF by size
Create parts that stay under a target MB limit.
Rotate PDF pages online
Fix page orientation for sideways scans or photos.