1. Upload your video
Drag and drop your video file into the upload area, or click to browse your device. We support MP4, MOV, MKV, AVI, WebM, FLV, and dozens of other video formats.
Online Video Compressor
Compress video files and reduce video file size online — for free. Supports MP4, MOV, MKV, AVI, WebM, and more. No installs. No watermarks.
Rated 4.5 out of 5 on Trustpilot
Why compress video with HappyScribe?
All Video Formats Supported
Compress MP4, MOV, MKV, AVI, WebM, FLV, and more. Our video file compressor handles every major format without needing conversion.
Free, No Signup
Compress video files for free, right in your browser. No account, no watermarks, no hidden costs — ever.
Smart Quality Control
Choose between maximum compression for the smallest file or balanced compression to preserve visual quality. You stay in control.
Works Everywhere
No downloads needed. Compress video online from any browser — Chrome, Safari, Firefox — on desktop, tablet, or phone.
How to compress a video file?
2. Choose compression settings
Select your preferred compression level. Maximum compression gives you the smallest file size; balanced compression keeps your video looking sharp. Hit Compress when ready.
3. Download your compressed video
Your compressed video is ready in moments. Click the download link to save the smaller file to your device. No software to install, no quality surprises.
What is video compression?
Video compression reduces file size by removing visual data that viewers won't notice — like redundant frames and imperceptible details. Modern codecs like H.264 and H.265 make it possible to shrink videos dramatically while maintaining sharp, watchable quality.
Supported video formats
Our video compressor supports all major formats: MP4, MOV, MKV, AVI, WebM, FLV, WMV, MPEG, 3GP, M4V, and more. Upload any video and compress it instantly — no format conversion required.
Free Online Video Compressor
Need to compress a video file? HappyScribe's free online video compressor lets you reduce video file size in clicks — no software to install, no account needed, and zero cost. Upload your MP4, MOV, MKV, or any other video format, choose your compression level, and download a smaller file in moments.
Why compress video files?
Video files are among the largest files on your device. A single 4K recording can be several gigabytes. Compressing your videos makes them easier to share, faster to upload, and less of a burden on your storage — all without making them unwatchable.
When to use a video compressor
Sharing on Discord — Discord limits uploads to 25 MB (or 50 MB with Nitro). Compress your video to fit within the limit and share it directly in chat without external links.
Email attachments — Most email providers cap attachments at 25 MB. Compress your video file to send it directly instead of relying on third-party file-sharing links.
WhatsApp and social media — WhatsApp limits video attachments to 2 GB but compresses them aggressively. Pre-compress your video to control quality and keep the file looking sharp on the other end.
Saving storage space — Running low on disk space? Batch-compress your video library and free up gigabytes without deleting a single clip.
Faster uploads — Uploading to YouTube, Vimeo, or social media? A smaller file uploads significantly faster, especially on slower connections.
How video compression works
Video compression uses codecs like H.264 and H.265 (HEVC) to analyze each frame and remove redundant visual data. H.265 can reduce file size 20–75% more than H.264, especially for high-resolution video (1080p and 4K). Our compressor automatically selects the best approach based on your input file and compression settings — no codec knowledge required on your end.
Compress any video format
Our video compressor works with every major format. Whether you need to compress MP4, compress MOV, shrink MKV files, or reduce AVI or WebM — it all works the same way. You can also convert your video to another format or transcribe video to text — all from the same browser window, completely free.
Frequently Asked Questions
How much can I reduce a video file size?
Depending on the original video and your settings, you can typically reduce a video file by 40% to 90% of its original size. High-resolution videos (1080p, 4K) see the biggest reductions. Results vary depending on the codec, resolution, and content complexity.
Does compressing video reduce quality?
With balanced compression, most viewers can't see the difference. Our compressor uses modern codecs to preserve sharpness and color accuracy. For maximum compression, there may be slight quality trade-offs, but videos remain perfectly watchable for sharing and playback.
What video formats can I compress?
We support all major video formats: MP4, MOV, MKV, AVI, WebM, FLV, WMV, MPEG, 3GP, M4V, TS, and many more. Upload any video file and compress it directly — no conversion needed.
How to compress a video for Discord?
Upload your video, select maximum compression, and click Compress. Discord allows files up to 25 MB (50 MB with Nitro). Our compressor can typically get most short videos under that limit while keeping them looking good.
How to compress a video for email?
Upload your video file, choose maximum compression for the smallest size, and click Compress. Most email providers accept attachments up to 25 MB — our tool can usually get short-to-medium length videos well under that limit.
Is there a file size limit?
We support video files up to 4 GB each in the free version.
Can I compress video without losing quality?
Yes — use our balanced compression setting. It applies modern encoding techniques to reduce file size significantly while preserving visual quality. The difference is imperceptible for most viewing scenarios, from social media to presentations.
Can I compress video on my phone?
Yes — our online video compressor works in any mobile browser. No app to download. It runs smoothly on iOS Safari and Android Chrome, so you can compress videos directly from your phone's camera roll.
Are my videos secure?
Absolutely. All transfers are secured with TLS 1.3, and your video files are automatically deleted from our servers after processing. We never store, view, or share your content.
Discover Related Tools