Compress video online for free
Compress a video online to reduce size up to 90% without visible loss. Try the tool right now. 100% local in-browser processing, nothing ever uploaded to
Drop your video here
MP4, WebM, AVI, MOV supported
Supported formats
How it works
Step 1
Upload your video to compress
Step 2
Choose compression level (light, medium, high)
Step 3
Download your compressed video
Common mistakes
- Uploading a video file too large for the browser (keep it under 2 GB).
- Closing the tab before processing finishes: the conversion stops.
- Using an exotic input format (prefer MP4, WebM, MOV, AVI).
- Picking a bitrate so low that quality drops noticeably.
Pro tips
- Pick H.264 (MP4) for the widest compatibility.
- For the web, use WebM (VP9/AV1): smaller file at the same quality.
- Keep the original: processing is local but the download is final.
- On mobile, plug in the charger for long videos.
Privacy guaranteed
Compression done in your browser. No video is transmitted to our servers.
Reduce video size for email — free online, no signup
Email attachments are size-limited (usually 25MB). Compress your videos to easily send them via email. Video compression reduces file size (MB) while preserving visual quality through optimized H.264 encoding, an adjusted bitrate and a configurable compression ratio, with no perceptible quality loss.
Also discover our tool to convert video online.
Technical details
Our compressor adjusts bitrate (Mbps or kbps) and CRF to optimize file weight: ideal for making videos lighter before sharing or uploading on the web.
Why choose our online video compressor
Our online video compressor stands out with 100% local processing via FFmpeg.wasm directly in your Chrome, Firefox, Safari or Edge browser — no server upload, no queue, no arbitrary size limit. You get a fast, free, no-signup, watermark-free tool compatible with all your MP4, MOV, AVI, MKV, WebM, FLV, WMV, M4V, 3GP files and more. Perfect for YouTubers, TikTokers, Instagram Reels creators, Premiere Pro editors, DaVinci Resolve, CapCut, Final Cut users, marketing pros, e-learning trainers and individuals who want to compress video online for free without installing heavy software like HandBrake, Adobe Media Encoder or VLC.
Cross-device compatibility — PC, Mac, iPhone, Android
Our video compressor works on Windows 10, Windows 11, macOS Ventura, Sonoma, Sequoia, Linux Ubuntu, Debian, Fedora, as well as iOS 16+ (iPhone, iPad), iPadOS, Android 10+ (Samsung Galaxy, Google Pixel, Xiaomi, OnePlus) and even Chrome OS on Chromebook. No native app, no APK, no .exe to download: just open the page in your favorite browser and start processing your videos. Compatible with videos from smartphones (4K HDR, slow-motion), GoPro cameras, DJI drones, OBS screen captures, After Effects exports, Loom screencasts and files downloaded from YouTube, Vimeo, TikTok, Twitch or Twitter/X.
Privacy, GDPR compliance and video security
Unlike competing services (Clideo, Kapwing, Veed.io, FlexClip, Online-Convert, Convertio, CloudConvert, FreeConvert, EZGif, Zamzar) that upload your files to remote servers in the US or Asia, our tool processes your entire video in your browser's RAM. Not a single byte is sent over the Internet, ensuring full GDPR, CCPA, LGPD and HIPAA compliance. Perfect for confidential business documents, medical, legal, educational videos, copyrighted content and any personal file you do not want to entrust to any third party.
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Guides and tutorials
Frequently asked questions
How much can I reduce my video size?
Depending on the compression level chosen: light (~30%), medium (~60%) or high (~90%). Reduction also depends on the source video and its initial encoding.
Will quality loss be visible after compression?
With light or medium compression, the loss is imperceptible to the naked eye. High compression may cause slight pixelation on high-resolution screens.
What compression level should I choose for WhatsApp?
WhatsApp limits videos to 16MB. Use medium compression for short videos or high for longer ones. Check the final size before sending.
How to compress without losing too much quality?
Choose light compression (~30% reduction). It optimizes encoding while preserving 95% of original quality. Ideal for professional videos.