File Size Limits for Every Platform
The complete, up-to-date reference for image, PDF, and video upload limits across email, messaging, social media, and government portals. Last updated March 2026.
| Platform | Image Limit | PDF Limit | Notes | Tool |
|---|---|---|---|---|
| Gmail | 25 MB | 25 MB | Attachments over 25 MB are automatically shared via Google Drive link instead. | Compress |
| Outlook (Free) | 20 MB | 20 MB | Free Outlook.com accounts cap at 20 MB per message. Includes all attachments combined. | Use SizeSnap |
| Outlook (Microsoft 365) | 150 MB | 150 MB | Business accounts get 150 MB, but many corporate mail servers enforce stricter limits (10-25 MB). | Use SizeSnap |
| Yahoo Mail | 25 MB | 25 MB | 25 MB total across all attachments in a single email. | Use SizeSnap |
| Apple Mail (iCloud) | 20 MB | 20 MB | Files over 20 MB use Mail Drop, which uploads to iCloud and shares a temporary download link. | Use SizeSnap |
| ProtonMail | 25 MB | 25 MB | Encrypted attachments have slightly more overhead — keep files under 24 MB to be safe. | Use SizeSnap |
Messaging
| Platform | Image Limit | Video Limit | PDF Limit | Notes | Tool |
|---|---|---|---|---|---|
| 16 MB | 16 MB | 100 MB | Images over 16 MB are rejected. Documents (PDF, etc.) allow up to 100 MB. WhatsApp also recompresses images aggressively. | Compress | |
| Telegram | 10 MB (photo), 2 GB (file) | 2 GB | 2 GB | Sending as 'photo' compresses to ~10 MB. Sending as 'file' preserves original quality up to 2 GB. | Use SizeSnap |
| Discord (Free) | 10 MB | 10 MB | 10 MB | Free accounts: 10 MB per file. Nitro Basic: 50 MB. Nitro: 500 MB. | Compress |
| Slack | Varies by plan | — | Varies by plan | Free: limited total storage (5 GB workspace). Pro: 10 GB per member. Individual file uploads up to 1 GB. | Use SizeSnap |
| Signal | 100 MB | 100 MB | 100 MB | Generous 100 MB limit per attachment. Signal does compress images when sent as photos. | Use SizeSnap |
Cloud Storage
| Platform | Image Limit | PDF Limit | Notes | Tool |
|---|---|---|---|---|
| Google Drive | 5 TB | 5 TB | Individual files up to 5 TB. Storage counts against your Google account quota (15 GB free). | Use SizeSnap |
| Dropbox | 2 GB (web), 50 GB (desktop) | 2 GB (web), 50 GB (desktop) | Web uploads: 2 GB per file. Desktop app: up to 50 GB. Transfer: up to 100 GB per transfer. | Use SizeSnap |
Government
| Platform | Image Limit | Notes | Tool |
|---|---|---|---|
| US Passport Photo (State Dept) | 240 KB - 10 MB | Must be 2x2 inches, 600x600 to 1200x1200 pixels, JPEG format. File size between 240 KB and 10 MB. | Compress |
| UK Passport Photo | 50 KB - 10 MB | JPEG format. Must be at least 600x750 pixels. Many applicants need to compress to meet the minimum quality requirements. | Compress |
| Indian Government Portals | 20 KB - 200 KB (typical) | SSC, UPSC, railway boards, and banking KYC portals commonly require photos between 20 KB and 200 KB. Signature scans often 10-50 KB. | Compress |
| Schengen Visa Photo | 100 KB - 500 KB | 35x45mm, JPEG format. Requirements vary by consulate. Most require 100-500 KB range. | Compress |
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Social Media