Compress Video for WhatsApp
Optimize video to under 16 MB or 100 MB for fast WhatsApp mobile sending without server compression.
Pre-compresses video to under 16 MB to prevent WhatsApp server recompression artifacts.
Drop video or audio files here or browse your device
Files are processed locally inside browser memory. No uploads.
Frequently Asked Questions
Are my video or audio files ever uploaded?
No. LocalVideoKit processes all media files directly in your web browser using HTML5 File APIs, WebCodecs, and WebAssembly. Your files are never sent to any server or cloud service.
Is there a file size limit?
Because files are processed entirely in your browser's memory, the practical limit is your device's available RAM and your browser tab's memory ceiling. Shorter clips and files under a few hundred megabytes process comfortably on most devices; very large or long files may run slowly or fail on lower-memory devices.
What are WhatsApp's video file size limits?
WhatsApp limits direct video messages to 16 MB, while videos sent as Documents can be up to 100 MB (or 2 GB in newer releases). Pre-compressing your video locally preserves sharpness while avoiding WhatsApp's aggressive server-side compression.
How this tool works
Compress videos for WhatsApp without losing clarity. Fits WhatsApp 16MB and document limits locally in your browser.