Compress Video on iPhone

iPhone videos are high quality but can be huge — 4K footage fills storage fast. Compress iPhone videos directly in Safari without downloading any app.

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iPhone video sizes

iPhone 15 at 4K 60fps: ~400MB per minute. At 1080p 30fps: ~130MB per minute. Compressing a 1-minute 4K clip to 1080p at 65% quality takes it to ~20-30MB.

How to Get Started

1.
Open Safari on iPhone — Navigate to this page in Safari on your iPhone or iPad.
2.
Select your video — Tap the upload area to open your Photos library and select a video.
3.
Wait and download — Compression on iPhone is slower — plan for 3-8 minutes per minute of video.

Key Features

📱

Safari compatible

Works in Safari on iPhone 12 and later. iOS 15+.

📷

Direct from Photos

Access your Camera Roll directly through the file picker.

📤

Easy sharing

Download the compressed MP4 and share via AirDrop, iMessage, or WhatsApp.

🔒

Private

Video stays on your iPhone. No iCloud upload needed.

Frequently Asked Questions

How long does compression take on iPhone?

iPhone browsers run WebAssembly slower than desktop. Expect 5-15 minutes for a 100MB video. Shorter clips are practical; very long videos may time out.

Can I compress iPhone 4K video?

Yes, but it takes longer. Consider downscaling from 4K to 1080p — this dramatically speeds up processing and reduces file size.

Does the iPhone need to stay awake?

Yes. Keep the Safari tab active and prevent the iPhone from sleeping during compression. Go to Settings > Display & Brightness > Auto-Lock and set to Never while processing.

Where does the compressed video save?

It saves to your Downloads folder in Files app. You can then share it or import it to Photos.

Related

Compress on Android

Android video compression guide.

Compress for WhatsApp

Compress iPhone videos for WhatsApp sharing.

Compress MOV Files

Compress MOV files from iPhone.

Ready to compress on iPhone?

Go to the Video Compressor →