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Reduce video file size without significant quality loss. Local processing using FFmpeg.wasm.
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The Video Compressor is built for practical delivery — smaller files that stay clean across phones, desktops, and social feeds. Browser-based WebAssembly processing means no upload wait times even for multi-gigabyte source clips.
Lower width first — it gives the biggest size savings without pushing compression artifacts into fine detail. Tune quality only after width is right. Preset speed controls encode time, not output quality.
Always proof motion-heavy scenes and text overlays at the end — those areas reveal codec artifacts before flat backgrounds do. A small quality bump in those cases goes a long way.
Need a different container after compressing? Use Convert Video to repackage without recompressing.
Start with quality and width. Lowering width often gives larger size savings than aggressive quality drops.
Artifacts appear when bitrate is too low for motion complexity. Increase quality slightly or keep original FPS for motion-heavy scenes.
Yes. The current flow preserves audio where possible while optimizing the video stream.
Check out our technical guides to learn more about how browser-side processing works.
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