Compress video
Reduce video size and choose how much quality to keep, then compare the result. Processing stays on your device.
Drop videos to compress
Choose a quality level or an output size limit, then compare the finished file.
Any media file this browser’s engine can read. You can also drag in a folder. Several at once needs a free account.
How to compress a video online
Choose a smaller, balanced, or higher-quality export, then compare the original and finished file sizes. This free online video compressor reduces the file on your device, so there is no upload step.
Step 1
Choose a videoPick the file you want to make smaller.Step 2
Choose the qualitySelect the size and quality balance you prefer.Step 3
Download the resultCompare the sizes and save the smaller video.
What to expect
- Supported inputs
- Any media file this browser’s engine can read.
- What happens
- The video is saved again in its original format. Smaller makes the biggest cut, Balanced keeps most of the detail, and Higher stays closest to the original. Smaller also brings the picture down to 720p and Balanced to 1080p, so a 4K video comes out at HD size. Higher keeps up to 4K. You only get the file if it ends up smaller than the original.
- Limits
- Codec support and large-file capacity depend on your browser and device memory. If the encoder overshoots the source size, the export fails instead of returning a larger file.
Private by design
Your video stays on your device
Mastershot processes your file locally in this browser. It does not need to be uploaded to a server, and you do not need an account to use the tool.
- No upload
- No signup
- No watermark
Questions
Lower quality uses a smaller bitrate, which usually reduces detail. Compare the original and compressed sizes after export, then try another quality if you want a different tradeoff.
Use a compress-to-size page, such as 8 MB, 10 MB, or 25 MB, when you need a verified size cap. This page is for choosing a quality level, not guaranteeing a byte limit.
For H.264 MP4, about 4–8 Mbps looks good at 1080p, 2–4 Mbps at 720p, and 20–40 Mbps at 4K. Fast motion needs the top of the range; screen recordings and talking heads look fine near the bottom. HEVC and AV1 reach similar quality at roughly half the bitrate.
Picture messages (MMS) through phone carriers are usually capped around 1 MB or less, so use a compress-to-size page with a small limit and trim the clip first. iMessage and RCS chats accept much larger files.
Phones record at high bitrates, often 4K at 60 fps, so a minute can take hundreds of megabytes. Screen recordings keep every frame sharp for text. Both usually shrink a lot with little visible loss.