Video Compressor — Reduce File Size for Any Platform

All-in-one video compressor. Reduce file size for WhatsApp, Discord, Telegram, Instagram, TikTok, YouTube, Email — choose from 16 platform presets or set your exact target size. Smart auto mode, custom CRF, codec, resolution and FPS controls. Compare before and after. No watermarks.

How to Compress a Video

1
Upload your video

Drag and drop or select a video file (MP4, WebM, MOV, AVI, MKV). The size limit depends on your device; the line under the upload area shows it.

2
Choose compression mode

Use Auto for smart auto-optimization, Target Size for exact file size, Platform for social media presets, or Custom for full manual control.

3
Review the estimation

Check the live size estimation showing original vs. compressed size and reduction percentage before starting.

4
Compress and download

Hit Compress Video, watch the progress with ETA, then download your smaller file. Processing happens entirely on your device.

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Reduce video file size with precise quality control

Drop video here
MP4, WEBM, MOV, MKV, AVI, WMV, FLV, 3GP ·
File Size: Resolution: Codec: FPS: Bitrate: Duration: Audio:
Compression Settings
Smart auto-optimization based on your video. Reduces size while keeping great quality.
Target file size 10 MB
1 MB100 MB
Calculated bitrate: —  ·  CRF: —
Format

Pick a platform — it sets the file size and resolution.

Codec
VP9 is slower to encode
Resolution
Frame Rate
Quality (CRF)
23
HighLow
Lower CRF = higher quality, bigger file. Higher CRF = smaller file, lower quality.
Audio
Audio bitrate
Start End
Original size —
Estimated size —
Reduction —
Compression method
Server-side processing

This device ran out of memory compressing the file in the browser.

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Compressing on the server…
Batch processing

Set up the compression and press “Compress Video” — the files are compressed one by one with these settings, right in your browser.

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Compression Complete!
Before
→
After
Download Compressed Video
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Key Features

16 Platform Presets
One-click compression for WhatsApp (16 MB), Discord (8/50/100 MB), Instagram Reels & Stories, TikTok, YouTube, Twitter/X, Facebook, Snapchat, LinkedIn, and Email (10/25 MB). Automatic resolution, FPS and bitrate optimization per platform.
Target Size Mode
Set your exact desired file size with a slider. The compressor calculates the optimal bitrate and CRF to hit your target. Perfect when you need a file under a specific size limit.
Smart Auto Mode
Automatic analysis of your video — resolution, bitrate, codec, FPS — and applies optimal compression settings. One click, great results, no guesswork.
Full Custom Control
Choose codec (H.264 or VP9), resolution (360p to 4K), frame rate (15 to 60 fps), quality (CRF 18-35), audio handling, metadata stripping, and optional trim — all in one panel.

What you can do

  • Compress videos for messengers — fit within the 16 MB WhatsApp or 8 MB Discord limit
  • Optimize clips for social media — adjust resolution, FPS and bitrate to match platform requirements
  • Shrink screen recordings or webinars for email attachments (under 10–25 MB)
  • Compress phone videos without visible quality loss — smart mode picks optimal settings automatically
  • Convert heavy MOV or MKV files into compact MP4 or WebM
  • Trim and compress in one step — remove unwanted parts and reduce file size simultaneously

Frequently Asked Questions

How does the video compressor work?

Your browser re-encodes the video with FFmpeg compiled to WebAssembly, choosing codec, CRF, resolution and bitrate to reach a smaller file while holding the picture together. Premium adds a server lane for machines that cannot finish the browser encode: one file per run, up to 100 MB.

The recording is enormous. Will my machine cope?

It depends on the device, because the encode runs in your browser. The largest files (MP4, MOV, WebM, MKV) are compressed by “Fast” only: the graphics card reads the file in pieces and writes the result to disk, so its size barely touches memory, while “Best quality” would take many hours on it — the tool says so when you pick such a file. An old browser without WebAssembly SIMD stops at 150 MB. The tool measures your machine when you pick the file and names your own limit if it will not fit. The Premium server lane takes one file per run, up to 100 MB.

Will compression reduce video quality?

Some quality loss is inherent in compression, but with smart settings (CRF 20-25), the difference is barely noticeable. Auto mode balances size and quality for you. You can see before/after comparison in the results.

Can I compress video for WhatsApp/Discord?

Yes! Use the Platform mode with 16 presets optimized for WhatsApp (16 MB), Discord (8 MB), Discord Nitro (50 MB), Instagram, TikTok, YouTube, Email, and more. Each preset adjusts resolution, FPS, and bitrate to fit the platform's limits.

What codecs are supported?

H.264 (MP4) for maximum compatibility and VP9 (WebM) for better compression at the same quality. H.265/HEVC is available in neither lane: the browser has no encoder for it, and the server lane is built on libx264. VP9 gives roughly 20% better compression than H.264 but encodes much more slowly.

Can I trim the video before compressing?

Yes. In Custom mode, you can set start and end times to trim your video before compression. This is useful for removing unwanted parts and further reducing file size without a separate tool.

💡 Want us to improve this tool just for you?

We can! Just send us a quick message with your idea. If you'd like to discuss it in detail, leave your email and we'll get back to you. You can stay anonymous.

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Who is this tool for?
🎬 Video Creators ✨ Content Creators 🚗 Drivers
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