reference6 min
PDF File Size Limits by Platform (2026 Guide)
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By Nicole Adams
January 21, 2025
“Know the PDF file size limits for every major platform.”
Different platforms have different PDF size limits. Here's a complete reference.
Email Services
- Gmail: 25 MB
- Outlook: 20 MB
- Yahoo Mail: 25 MB
- Apple Mail: 20 MB
- ProtonMail: 25 MB
Cloud Storage
- Google Drive: 5 TB (per file)
- Dropbox: 50 GB (web), 2 TB (desktop)
- OneDrive: 250 GB
- iCloud: 50 GB
Social Media
- LinkedIn: 100 MB
- Facebook: 25 MB
- Twitter: Not supported
- Instagram: Not supported
Learning Management Systems
- Canvas: 500 MB
- Blackboard: 500 MB
- Moodle: Varies (typically 100-500 MB)
- Google Classroom: 100 MB
Best Practice
Keep PDFs under 10 MB for maximum compatibility across all platforms.
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