Video Compressor
Compress video with hardware acceleration — até 5× faster than traditional tools. Os arquivos permanecem no seu navegador. Choose a platform preset or customize.
A practical starting point
Start with Medium quality. For social uploads, choose a platform preset to resize and compress in one step.
Start with a preset
Pick the destination first, or choose Custom for full control.
Platform Presets
Add your videos
Drop one or more files here. You can add more before processing.
Drop video here or click to browse
MP4, MOV, WebM, MKV, AVI — até 2GB each
Settings
Processamento localBest compatibility for websites, phones, and social platforms.
Advanced
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Compressor de imagens
Comprima JPG, PNG e WebP com MozJPEG, OxiPNG e libwebp diretamente no navegador.
Conversor de vídeo
Convert MP4, WebM, MKV, and MOV videos online no seu navegador. Choose a format and codec, process files locally, and download the result without uploading your video.
trim-video
Cut videos to a precise time range no seu navegador. Fast mode prioritizes speed, while Precise mode supports frame-accurate trimming. Preview before you save and process multiple files in one batch.
resize-video
Change video resolution with smart fit modes. Preset sizes for YouTube, TikTok, Instagram, and more. Hardware-accelerated, sem upload needed.
Everything you need to know
Compress MP4, WebM, MOV and more
MediaKit accepts common camera, phone, screen-recording, and downloaded video formats. Choose MP4 for broad compatibility or WebM for efficient browser delivery.
mp4
Universal playback
webm
Web-optimized video
mov
Apple QuickTime video
mkv
Flexible media container
avi
Legacy video container
m4v
Apple video variant
How to compress a video online
The whole workflow takes place no seu navegador, so you can check the result antes de baixar it.
- 01
Choose a video
Drag in an MP4, MOV, WebM, MKV, AVI, or another supported video. Batch selection is supported.
- 02
Pick the balance
Use a social preset or adjust quality, format, codec, frame rate, and keyframe interval.
- 03
Preview and download
Start compression, compare the original and new sizes, preview the result, then download one file or a ZIP.
Common video compression scenarios
Reduce unnecessary bytes before you send, publish, or store a video. Resizing often saves more space than lowering quality alone.
Email attachments
Make a long phone video small enough to share through email or a file-size-limited form.
Social media uploads
Use TikTok, Instagram, YouTube, X, WhatsApp, or Discord presets for a platform-friendly size and shape.
Websites and landing pages
Export a lighter MP4 or WebM to improve page load time while keeping the important visual detail.
Messages and cloud storage
Shrink clips before sending them in a chat or backing up a large camera library.
Your video stays no seu dispositivo
Files are read by your browser and processed in local Web Workers with MediaBunny. They are not uploaded to a server. When you are done, close the tab or remove the files to clear local object URLs.
FAQ
Perguntas frequentes
Can I compress a video without losing visible quality?
Compression always involves a trade-off, but Medium or High quality plus a sensible resolution usually looks very close to the original. Start from the original file and preview the result before sharing it.
Are my videos uploaded?
No. The compressor runs no seu navegador. The selected files are passed to local Web Workers for decoding and encoding and are not sent to MediaKit servers.
Which video formats are supported?
You can add MP4, M4V, MOV, WebM, MKV, AVI, WMV, FLV, 3GP, MTS, M2TS, TS, OGV, DIVX, and XVID files. MP4 and WebM are available as output formats.
How large can a video be?
Each input video can be até 2 GB. Processing very large files needs enough free memory and may take longer on phones or older laptops.
Should I choose MP4 or WebM?
Choose MP4 when compatibility matters most. Choose WebM for modern browsers and web delivery when a arquivo menor is more important than legacy device support.
Will it work on a phone?
Yes, on a current browser. Keep the tab open while encoding and use a lower resolution or quality preset if the phone becomes warm or runs low on memory.
Learn before you export
Compression guides and related tools
How to compress video without losing quality
A practical guide to resolution, bitrate, frame rate, and checking the result at the size people will actually watch.
Read the guideMP4 vs WebM: which format should you use?
Understand the trade-offs between compatibility, browser delivery, codec support, and file size.
Read the guide