Compress Video
Reduce video file size while preserving quality
drag & drop a file anywhere · paste with Ctrl/⌘+V · max 250MB
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How To Compress Video
Follow along with the steps below
Step 1
Upload your video
Select or drag the video file you want to shrink into the tool. Common formats like MP4, MOV, AVI, MKV, and WebM are supported.
Step 2
Choose your compression level
Pick how aggressively to compress by lowering the bitrate or reducing the resolution. A lighter setting keeps more quality, while a stronger setting produces the smallest file.
Step 3
Compress the video
The server processes your clip and re-encodes it at the new target size. Larger files take a little longer, so wait for the progress to finish.
Step 4
Download the smaller file
Save the compressed video to your device. It is ready to email, post, or upload right away with no watermark.
Need to compress video for email, social media, or a faster upload? This free online tool lets you reduce video file size in seconds by lowering the bitrate or resolution, so a clip that was too big to send becomes light enough to share anywhere. Just upload your file, pick how much to shrink it, and download a smaller version. There is no software to install, no sign-up, and no watermark added to your result.
Use this free online video compressor to make any video file smaller without installing software. By lowering the bitrate and resolution, the tool cuts MP4, MOV, AVI, MKV, and WebM files down to a manageable size for sharing, emailing, or uploading to social platforms. Compression runs server-side, your files are removed within an hour, and there is no sign-up or watermark. It is a simple, fast way to reduce video file size on any device or browser.
What you can do with Compress Video
- Shrinking a video so it fits under email attachment size limits
- Reducing a clip for faster uploading to YouTube, Instagram, or TikTok
- Saving storage space on a phone or laptop full of large recordings
- Compressing screen recordings or gameplay footage before sharing with a team
- Making a heavy 4K or high-bitrate video small enough to send over messaging apps
Video files grow large because they pack many high-resolution frames per second at a high bitrate. This tool reduces that size by re-encoding the clip at a lower bitrate or smaller resolution, which is exactly what email, social, and upload limits often require. Processing happens securely on the server and your files are deleted within an hour, so nothing lingers online. It is completely free, needs no account or sign-up, and adds no watermark to the finished video.
What to know before you use Compress Video
What actually shrinks the file
This re-encodes your video to H.264 (libx264) at a fixed CRF (constant rate factor), which targets perceptual quality rather than a hard bitrate. Most savings come from discarding visual data the encoder judges redundant between frames. If your source is already H.264 at a low bitrate, expect little gain; an old high-bitrate or ProRes/MOV file can drop a lot.
How much smaller to realistically expect
There is no fixed percentage. Detailed or fast-motion footage (sports, screen recordings with text) compresses poorly because most pixels change each frame; static talking-head or slideshow video shrinks far more. Re-compressing an already-optimized MP4 may save almost nothing, because there is little new redundancy left to remove.
When this is the wrong tool
It keeps your original resolution and only changes the codec and quality, so it will not fix a 4K clip that is huge mainly because of its dimensions; downscale to 1080p first. If you need a precise target size (for example under 25 MB for email), CRF cannot guarantee it. Use a two-pass bitrate-target encode instead.
Server-side processing and avoiding artifact stacking
Your file is uploaded, run through ffmpeg, and deleted within an hour, so avoid confidential footage. Very long or large files may fail to process, so trim or split them first. Encoding an already-compressed file stacks artifacts each pass, so always start from the highest-quality original you have rather than a previous compressed export.
Frequently Asked Questions
How does the Compress Video tool make my file smaller?
It re-encodes your video at a lower bitrate, and optionally a smaller resolution. Both reduce how much data each second of footage uses, which lowers the overall file size.
Will compressing the video lower its quality?
Some quality loss is normal since compression removes data, but a moderate setting usually keeps the result clear for most uses. Choose a lighter level if you want to preserve more detail, or a stronger level for the smallest file.
What video formats can I compress?
Common formats such as MP4, MOV, AVI, MKV, and WebM are supported. The downloaded result is a standard video file you can play anywhere.
Is it safe to compress my video online?
Yes. Processing happens securely on the server and your uploaded and compressed files are deleted within an hour, so they do not stay online.
Do I need to install software or create an account to compress a video?
No. The tool works right from your browser with no downloads, no installation, and no sign-up required — just upload your video and download the smaller file.
Is there a watermark on the compressed video?
No. The tool is free and adds no watermark to your output, so you can use the smaller video however you like.