FileAppsFileApps
Video Tools2 formats supported

Free online video compressor

Use this free online video compressor to reduce video file size in your browser. Compress MP4, MOV, AVI, and WebM for WhatsApp, email, websites, and everyday sharing without uploading your file.

  • CRF-based compression with adjustable quality
  • Preview estimated size before processing
  • Side-by-side quality comparison

Supported formats

MP4WebM

Adjust compression settings

Balance file size, quality, and output format before you start.

1
2
3
4
5

Drag & drop Video Compressor

or click to browse

Supported: MP4, WebM, AVI, MOV, MKV, FLV

How It Works

A simple three-step flow from upload to download.

  1. 1

    Drag and drop your video file into the upload area.

  2. 2

    Choose your compression level from the preset options or set a custom quality.

  3. 3

    Process the video and download the compressed file.

Features

Key capabilities surfaced as quick-scan cards.

  • CRF-based compression with adjustable quality

  • Preview estimated size before processing

  • Side-by-side quality comparison

  • Preserve audio quality while compressing video

Related Tools

Nearby workflows people often use before or after this video tool.

Video Converter

MP4 · WebM · AVI

Convert videos between MP4, WebM, AVI, MOV, MKV, and more with quality control.

Open tool

Video Trimmer

MP4 · WebM · MOV

Cut and trim video segments with precise start and end time controls.

Open tool

Mute Video

MP4 · WebM

Remove the audio track from a video without re-encoding. Fast stream-copy output.

Open tool

Video to GIF

GIF

Convert video clips to animated GIF with custom FPS, size, and duration controls.

Open tool

How to compress video online

  1. 1

    Upload your video

    Drag your file into the compressor or choose it from your device. You can compress common formats like MP4, MOV, AVI, WebM, and MKV.

  2. 2

    Choose a preset or custom settings

    Start with a preset like WhatsApp, Email, Web, or Archive, or fine-tune the quality and resolution yourself. This helps you reduce video file size based on where the file will be shared.

  3. 3

    Compress and download

    Run the compression and download the smaller file when it finishes. The process happens in your browser, so you can compress video online without sending it to a remote server.

Understanding the settings

If you want the safest balance between size and compatibility, start with MP4 and a moderate quality setting. Lowering resolution usually makes a bigger difference than tiny quality tweaks, so moving from 1080p to 720p can cut file size substantially while still looking good for messaging, email, and web use. WebM can create even smaller files for browser delivery, while Archive-style settings are better when you want to keep more detail and accept a larger result.

Best settings for common goals

WhatsApp and messaging apps

Start with the WhatsApp preset, then move to the Email preset if the clip is still too large.

Those presets combine practical resolution and quality defaults that usually shrink files quickly without making the output look heavily degraded.

Website upload

Keep MP4 for compatibility and downscale to 1080p or 720p if the source is larger than needed.

Most of the size reduction usually comes from resolution and CRF tuning rather than extreme audio cuts.

Format comparison

FormatBest forFile sizeQuality
MP4 (H.264)WhatsApp, email, and general sharingMediumBest compatibility
WebM (VP9)Website and browser deliverySmallHigh efficiency
MKVArchive and desktop playbackVariesFlexible

Practical guidance

The fastest way to shrink a video

People often push compression too hard when the real win comes from changing the workflow order. Shorter duration and sensible resolution almost always matter more than tiny codec tweaks.

  • Trim the clip first if you only need a highlight instead of the full recording.
  • Drop from 1080p to 720p before sacrificing too much quality on text-heavy or motion-heavy clips.
  • Use bitrate mode only when a strict upload ceiling matters more than visual consistency.

Compatibility, privacy, and limitations

MP4 vs WebM

MP4 is the safest choice for playback across phones, browsers, and messaging apps. WebM can be smaller, but it is better suited to web delivery where you control the player and target browsers.

Privacy explanation

Compression is often used on personal phone videos, family clips, or internal recordings. Keeping that process local avoids uploading raw footage just to make it small enough for sharing.

Things to keep in mind

  • Compression is always a tradeoff, so aggressive settings can make motion, text, and fine detail look softer or blockier.
  • Long clips may still exceed strict messaging limits even after compression, in which case trimming first is often the better move.

Frequently asked questions