Will compressing a video reduce its quality?

Some quality reduction is unavoidable when compressing video, but for typical social media targets the difference is often invisible at normal viewing sizes. The tool targets a bitrate high enough to preserve clear detail while meeting the size limit.

What is the maximum video file size for TikTok?

TikTok accepts videos up to 287 MB, but recommends staying under 72 MB for fastest processing and best quality. Videos over 287 MB are rejected at upload.

What is the maximum video size for Instagram?

Instagram accepts videos up to 100 MB for Reels and feed posts. Videos that exceed this limit will be rejected. We recommend targeting under 50 MB for reliable uploads.

Does my video get uploaded to your servers?

No. All compression happens entirely inside your browser using WebAssembly (FFmpeg.wasm). Your video file never leaves your device and is not sent to any server.

Why does compression take a few minutes?

Video compression is computationally intensive. Because everything runs in your browser (not on a server), it uses your device's processor. Processing time depends on video length, resolution, and your hardware. A 1-minute 1080p video typically takes 1–3 minutes.

Reduce Video File Size Online

Free Video Compressor

Video too large to upload? Shrink MP4 files for TikTok, Instagram, WhatsApp, and more. Pick a platform limit or set your own target — everything runs in your browser.

100% Free No Upload No Watermark Browser-Based

Compress to fit:

Hard limit: 287 MB

Drop your video here or click to upload

Supports MP4 and MOV — up to 500 MB

Video Size Limits by Platform

Upload limits change from time to time. These are the current known values as of early 2026.

Platform	Hard limit	Recommended	Notes
TikTok	287 MB	< 72 MB	Over 287 MB is rejected
Instagram Reels	100 MB	< 50 MB	Applies to feed videos too
Instagram Feed	100 MB	< 50 MB	MP4 / MOV only
WhatsApp	16 MB	< 16 MB	Status & direct messages
Email (most providers)	~25 MB	< 10 MB	Gmail, Outlook, Yahoo
X / Twitter	512 MB	< 200 MB	140 sec max duration
LinkedIn	5 GB	< 200 MB	10 min max duration
YouTube Shorts	256 GB	< 2 GB	Up to 60 seconds
Facebook	10 GB	< 500 MB	Compressed on upload
Pinterest	2 GB	< 200 MB	Up to 15 min

How it works

Three steps. No account needed.

Step 1

Upload your video

Drop an MP4 or MOV file up to 500 MB. It stays in your browser — nothing is sent to a server.

Step 2

Choose a size target

Pick a platform preset (TikTok, Instagram, WhatsApp…) or enter a custom target in MB.

Step 3

Download the smaller file

Compression runs locally using FFmpeg. When it's done, save the H.264 MP4 directly to your device.

Your video never leaves your device

All compression is handled by FFmpeg.wasm — a WebAssembly build of FFmpeg that runs directly in your browser. No video data is transmitted to any server, logged, or stored. Close the tab and everything is gone.

Built for every creator

If you share video, you have hit an upload limit. This fixes that.

Content creators

Batch-shrink clips before scheduling to TikTok or Instagram without re-exporting from your editor.

Social media managers

Clients send huge MP4s. Compress in seconds before posting to their accounts — no software needed.

Videographers

Send review cuts to clients via email without hitting attachment limits or paying for cloud storage.

Marketing teams

Compress campaign videos to meet ad platform specs before upload deadlines.

E-commerce brands

Shrink product demo videos for WhatsApp sharing and email marketing without losing sharpness.

Educators

Compress lecture recordings and tutorial clips for LMS platforms with strict upload limits.

Frequently asked questions

Schedule compressed videos automatically

Once your video is the right size, post it at the perfect time. SocialCal lets you schedule videos across TikTok, Instagram, LinkedIn, and more — from one place.

Try SocialCal free