Free Online Video Compressor — 100% Private, Hardware Accelerated

Compress MP4, MOV, and WebM videos directly in your browser. Powered by WebCodecs hardware acceleration. 100% private, GDPR compliant, zero server uploads. No file leaves your device — everything happens locally.

Why Choose LocalCompress?

• 100% Local Processing — Your videos never leave your device. No uploads to any server.
• Hardware Accelerated — Uses your GPU via WebCodecs API for lightning-fast compression.
• Smart Bitrate Calculation — Automatically determines optimal bitrate to meet your target file size.
• Multiple Format Support — Input: MP4, MOV, WebM, MKV, AVI. Output: MP4 (H.264) with Fast Start.
• Free, No Limits — No watermarks, no usage caps, no premium tiers.

Frequently Asked Questions

How does this video compressor work?

Our compressor uses the WebCodecs API built into modern browsers. All processing happens directly on your device — your video never leaves your computer.

Is it really 100% private?

Yes. Unlike other online video compressors that upload your files to a server, LocalCompress processes everything locally in your browser. This makes us fully GDPR and CCPA compliant by design.

What video formats are supported?

Input: MP4, MOV, WebM, MKV, AVI. Output: MP4 with H.264 (AVC) video codec for maximum compatibility across all devices and platforms.

Do I need to install anything?

No installation required. Works entirely in your browser via drag-and-drop. Compatible with Chrome, Edge, and Safari.

Is this service really free?

Yes, 100% free. All processing is local — we have no server costs for video processing.