Compress Video Online - Free & Private
Drop your video here
or click to select a file
🔒 Your files never leave your device - 100% private & secure
Reduce video file size instantly in your browser - no upload needed
or click to select a file
🔒 Your files never leave your device - 100% private & secure
Choose a target size preset and keep the original resolution - VidShift will calculate the optimal bitrate to hit that target. For further size reduction, try lowering the resolution instead of the bitrate - for example, scaling a 4K video to 1080p halves the pixels while keeping sharpness.
There is no hard limit. The practical limit depends on your device's available memory. Most modern computers handle files up to several gigabytes. For very large files, try lowering the resolution to reduce memory usage during compression.
Select the Email preset (25 MB target) after loading your video. VidShift will automatically calculate the right bitrate to fit your video within the 25 MB limit. For shorter videos, the quality will be higher. For longer videos, you may want to also lower the resolution for best results.
Select the WhatsApp preset (16 MB target). WhatsApp has a 16 MB file size limit for video messages. VidShift will calculate the optimal bitrate to fit within that limit. For longer videos, consider trimming first using our Video Trimmer, then compressing the result.
Yes, some quality reduction is inherent in compression. However, VidShift automatically calculates the optimal bitrate based on your target file size and video duration, so shorter videos retain more quality. For the best results, choose the largest target size that meets your needs and lower the resolution rather than accepting a very low bitrate.
Speed depends on your device and the video's length and resolution. Short clips compress in seconds. Longer or high-resolution videos may take a few minutes. A progress bar and estimated time remaining are shown during compression. Hardware acceleration is used when available for faster processing.
Yes. Your video never leaves your device. VidShift has no backend servers that receive or store your files. All compression runs locally in your browser using WebAssembly, ensuring complete privacy. The tool even works offline after your first visit.
VidShift supports all common video formats: MP4, MOV, MKV, WebM, OGV, M4V, and MPEG-TS. The compressed output is always saved as MP4 for maximum compatibility across devices and platforms.
Trim your video first with our Video Trimmer
Extract audio only with our MP4 to MP3 Converter
Remove audio before compressing with our Mute Video tool