Video Compressor
Reduce your video file size with estimated savings preview. See how much space you'll save before compressing.
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Videos never leave your browser
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Up to 80% smaller
WebCodecs re-encoding
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The video compressor re-encodes your clip at a lower bitrate using WebCodecs, reducing file size while keeping the same resolution and frame rate. Before compression runs, you get an estimated savings figure so you can decide whether a quality preset is aggressive enough for your target — for example, shrinking a 200 MB 1080p clip to under 25 MB so it fits in a chat attachment.
Compression is typically used to send videos over email, Slack, or WhatsApp without hitting upload limits, to free up phone storage, or to speed up playback on older devices. You can pick between low, medium, high, and ultra quality presets; lower presets apply more aggressive bitrate reduction.
The original file stays on your device throughout. There is no uploading, no watermarking, and no signup — you can compress a single video or work through a whole folder without any quota.
Video Compressor — Frequently Asked Questions
How do I compress a video for WhatsApp, Discord, or email?
Most services cap video attachments at 8–25 MB. Pick the Medium or Low preset and watch the live size estimate — once it drops under your target, hit Compress. For fixed targets like 8 MB (Discord free), 25 MB (Gmail), or WhatsApp's 16 MB ceiling, our target-size compressors do it automatically.
How much can I compress a video without losing quality?
The High preset typically shrinks files 40–60% with no visible quality loss. Medium gives 60–75% savings with mild softening, fine for messaging. Low reaches 80%+ reduction at a cost — good for bulk-sharing low-priority clips, not for anything you're proud of.
Will compression lower the resolution?
No — the compressor keeps the original resolution and frame rate, and only reduces the bitrate. If you also need to downscale (1080p → 720p, for example), use the video resizer in tandem.
What video formats can I compress?
MP4, WebM, MOV, and MKV as input. The output is always produced in MP4 (H.264) for maximum compatibility across devices and messaging apps.
What's the maximum file size I can compress?
There's no server-imposed limit because processing runs in your browser. Modern desktop browsers comfortably handle files up to several gigabytes. Mobile browsers can struggle above ~1 GB.
Is my video uploaded to a server?
No. Compression runs entirely in your browser using WebCodecs, so the file never leaves your device.
How do I compress a video for WhatsApp, Discord, or email?
Most services cap video attachments at 8–25 MB. Pick the Medium or Low preset and watch the live size estimate — once it drops under your target, hit Compress. For fixed targets like 8 MB (Discord free), 25 MB (Gmail), or WhatsApp's 16 MB ceiling, our target-size compressors do it automatically.
How much can I compress a video without losing quality?
The High preset typically shrinks files 40–60% with no visible quality loss. Medium gives 60–75% savings with mild softening, fine for messaging. Low reaches 80%+ reduction at a cost — good for bulk-sharing low-priority clips, not for anything you're proud of.
Will compression lower the resolution?
No — the compressor keeps the original resolution and frame rate, and only reduces the bitrate. If you also need to downscale (1080p → 720p, for example), use the video resizer in tandem.
What video formats can I compress?
MP4, WebM, MOV, and MKV as input. The output is always produced in MP4 (H.264) for maximum compatibility across devices and messaging apps.
What's the maximum file size I can compress?
There's no server-imposed limit because processing runs in your browser. Modern desktop browsers comfortably handle files up to several gigabytes. Mobile browsers can struggle above ~1 GB.
Is my video uploaded to a server?
No. Compression runs entirely in your browser using WebCodecs, so the file never leaves your device.