Video Size Reducer: Fast Browser Video Compression
Shrink MP4, MOV, WebM, and MKV videos online with simple browser-based compression - no app install required.
About Video Size Reducer: Fast Browser Video Compression
Video Size Reducer helps users compress large video files online for easier sharing through chats, email attachments, and upload-limited platforms. Users can upload supported SDR MP4, MOV, WebM, or MKV files, choose basic or advanced compression settings, and set either a recommended quality option, target file size, or output resolution.
Uploaded videos are processed server-side through a task-based workflow with validation, visible progress, and resumable uploads when the same file is reselected. Standard results are delivered as MP4 files using H.264 video, with AAC audio when the source has sound. H.265 is available only as an advanced option when enabled and is not available for target-size compression.
Visitor and free-account uploads support source videos up to 1 GiB, with higher limits on Starter and Pro when enabled. Source videos are cleaned up after processing, and results are normally available for 24 hours.
Features
- Supports MP4, MOV, WebM, and MKV uploads up to 1 GiB
- Produces H.264 MP4 output with AAC audio encoding
- Resumable uploads and server-side processing with progress tracking
- H.264 MP4 output with AAC audio when the source has sound
Use cases
- Preparing a smaller MP4 video for Discord chat sharing
- Reducing video size for email attachment limits
- Optimizing videos before sending through WhatsApp
- Prepare review copies, attachments, and drafts
Screenshots
Frequently asked questions
Is this video size reducer free?
Yes, visitor trial credits can be used without signing in, and free accounts receive a monthly credit allowance.
What is the maximum file size I can upload?
Visitor and free-account uploads are limited to 1 GiB; paid plans support larger files up to 5 GiB.
Do I need to install any apps to use this service?
No installation is required; the tool works entirely through a current web browser on desktop or mobile.
What formats can users upload?
Users can upload supported SDR MP4, MOV, WebM, and MKV files with common video and audio codecs.
What is the upload size limit?
Visitor and free-account uploads are limited to 1 GiB. Starter supports up to 2 GiB and Pro supports up to 5 GiB when enabled.
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