How to Reduce Video Size for WhatsApp, Email, and Social Media

Video Too Large to Send? Here's How to Fix It

Every messaging app and social platform has file size limits. Here's how to get your videos under those limits using MyPDF's free video tools.

Platform Size Limits

Platform	Max File Size	Max Duration	Max Resolution
WhatsApp	16 MB	No hard limit	1080p
Telegram	2 GB	No limit	No limit
Email (Gmail)	25 MB	No limit	No limit
Email (Outlook)	20 MB	No limit	No limit
Instagram Post	250 MB	60 min	1080p
Instagram Reels	250 MB	90 sec	1080p
TikTok	287 MB	10 min	1080p
Twitter/X	512 MB	2:20	1080p
Discord (free)	25 MB	No limit	No limit

4 Methods to Reduce Video Size

Method 1: Compress the Video (Fastest)

Use Compress Video to reduce file size while keeping the same duration:

1. Upload your video


2. Choose compression level (medium recommended)


3. Download the smaller file

Best for: When you want to keep the full video but need a smaller file.

Method 2: Trim to a Shorter Clip

Use Video Trim to cut out unnecessary parts:

1. Upload your video


2. Set start and end points


3. Download the trimmed clip

Best for: Long videos where you only need a specific section.

Method 3: Lower the Resolution

Use Resize Video to reduce resolution:

• 4K → 1080p: ~75% size reduction


• 1080p → 720p: ~55% size reduction


• 720p → 480p: ~60% size reduction

Best for: When the video will be viewed on phones (720p is plenty).

Method 4: Combine All Three

For maximum reduction:

1. Trim to remove unnecessary parts


2. Resize to 720p


3. Compress the result

This can reduce a 200MB video to under 10MB.

Quick Guide by Platform

For WhatsApp (16MB limit)

1. Compress with Compress Video on high compression
2. If still too large, resize to 720p with Resize Video
3. Trim to essential parts with Video Trim

For Email (25MB limit)

1. Compress with medium settings
2. Usually sufficient — most 1-3 minute videos compress to under 25MB

For Discord (25MB free)

Same as email — compress first, resize if needed.

Frequently Asked Questions

Will the video look bad after compression?

At medium compression, quality is barely affected on phone screens. You'd need to zoom in on a large monitor to notice differences.

Can I compress a video multiple times?

You can, but each re-encoding degrades quality slightly. Better to compress once at a higher setting.

What if the video is still too large?

Convert to a more efficient format (use Convert Video to WebM), or split into multiple clips with Video Split.

Is it free?

All tools on MyPDF are 100% free — no sign-up, no watermarks.

Related Tools

• Compress Video — Reduce file size
• Video Trim — Cut to shorter length
• Resize Video — Lower resolution
• MP4 to MP3 — Extract audio only (much smaller)
• Video to GIF — Convert short clips to animated GIFs