Reduce video file size without uploading to any server. Processed securely in your browser.
Open 24 built-in tools from your browser sidebar, use quick actions from the right-click menu, and reach every RizCraft tool without hunting through tabs.
Firefox and Edge versions are coming next. Free to install
Compress MP4, WebM, MOV, and other supported video formats before emailing, uploading, or archiving them. Choose a light, balanced, strong, or maximum compression preset based on the file-size and quality tradeoff you can accept.
High-resolution or high-bitrate footage can exceed upload limits and take longer to transfer. Re-encoding can reduce the bitrate and resulting file size, but stronger compression removes more visual detail. It cannot guarantee a particular target size because the result depends on the source codec, duration, resolution, motion, and selected preset.
Start with Balanced and inspect the downloaded result. Choose Light when retaining detail matters more than size, or Strong/Maximum when a smaller file matters more. If you must stay under a fixed upload limit, you may need to try more than one setting or also reduce resolution.
Compression runs locally with FFmpeg WebAssembly, so the selected file is not uploaded to RizCraft. Large files can use significant CPU and memory; keep the browser tab open until processing finishes.
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