Free Online Video Compressor - Reduce Video Size

A Absolutely not. Processing happens entirely within your web browser. No files leave your computer. This ensures your video's privacy and speeds things up significantly as there's no upload wait time. You'll see the compressed file directly in your downloads folder once it's done.

A Yes, your video keeps its original dimensions. The compressor only changes the file size, not the shape or resolution. For TikTok, select "High" quality (CRF 23) to stay sharp. A 30-second 1080x1920 clip usually drops from 50MB to around 12MB.

A No, you can't. DRM-protected files from streaming services won't play in the browser at all. The tool needs to read the raw video data to compress it, and DRM explicitly blocks that. If you downloaded a video from Netflix or Amazon Prime, those files are encrypted and won't work. Stick to your own recordings or royalty-free clips. A 30-second screen recording of a protected video still compresses fine, though.

A Drag your 100MB MP4 into the tool and pick "Medium" quality (CRF 30). That usually drops it to around 15-25MB—small enough for most email attachments. Drop the resolution to 720p if your email has a 10MB cap. The whole thing takes about 30 seconds on a modern laptop. No upload means you're not waiting on a server.

A This tool doesn't overlay watermarks. It's purely a compressor—it shrinks file size and that's it. You'll need a separate editor like CapCut or DaVinci Resolve to stamp your logo onto the video first. Once you export that watermarked version, bring the resulting MP4 here to compress it for upload. Many YouTubers do this: watermark in their editor, then compress the final cut. A 2-minute 1080p video with a logo overlay typically compresses from 120MB to roughly 35MB on Medium quality.

A No, compression never cuts content. Your video stays the same length, the same scenes, and the same audio timing. The tool recodes each frame with more efficient encoding, which shrinks the file. Think of it like zipping a folder—same files inside, just packaged tighter. For example, a 5-minute lecture recording at 1080p might go from 300MB to 80MB with Medium quality, and every second of footage remains intact. If you need to actually trim a clip, do that in your editor first and then compress the result.

A Not if you pick the right quality setting. CRF 23 (High) looks nearly identical to the original on phone screens. Even CRF 30 (Medium) hides artifacts well for talking-head videos, but fast action scenes might show slight blockiness. Your resolution stays untouched, so a 1080p video remains 1080p. The trick is matching quality to content: screencasts handle heavy compression fine, while drone footage needs a lower CRF. Start at CRF 28 and check the preview before exporting.

A No, the original file stays untouched on your device. This tool creates a new, compressed copy while leaving your source video exactly as it was. If you're unhappy with the result, you can always go back to the original and try a different CRF setting. For example, compressing a 4K video to 1080p at CRF 23 saves about 70% space with barely visible changes. Just remember: once you delete the original, you can't recover that quality. So keep the source until you're satisfied with the output.

A Your colors stay exact because the compressor targets bitrate, not color spaces. A cinematic Rec.709 profile exported from Premiere Pro retains its precise tones after shrinking from 500MB to 120MB. But extreme compression settings below a CRF of 35 might introduce banding in dark gradients. Always run a quick test clip on your monitor before processing long footage.

A Teams working remotely often need to share large screen recordings with clients. A standard 15-minute product demo can easily exceed 400MB, making Slack uploads painful. Drop that MP4 into the browser and select the medium setting to drop the file size below 50MB in about 45 seconds. The resolution stays sharp enough for viewers to read UI text clearly. Nobody wants to wait ten minutes for a colleague's screen share to download.