Free Online Video Compressor
Upload Video
Compress MP4, MOV, MKV and WebM online - 100% free
Choose Quality
High Quality ~ Low Compression || Medium Quality ~ Medium Compression || Low Quality ~ High Compression
Compression Status
How to Compress your Video?
- Choose your video - Click "Choose File" or drag and drop your MP4 video
- Select quality preset - Choose from High, Medium, or Low. Highest Compression ~ Low Quality || Medium Compression ~ Medium Quality || Lowest Compression ~ Highest Quality
- Compress - Click "Compress Video"; processing happens locally on your device
- Download - Save your compressed video file
Why Use Our Video Compressor?
- 100% Free - No hidden costs, no signup required
- Private by Design - Your video is processed entirely in your browser. It is never uploaded, transmitted, or stored on any server — so your file data never leaves your device
- Hardware Accelerated - Uses your device's built-in video encoder for fast, efficient compression — even on modest machines
- No Wait, No Queue - No server queue or upload time; compression starts instantly
- Works Offline - Once the page is loaded, it works without an internet connection
Frequently Asked Questions
How do I reduce video file size online for free?
Just choose your clip, pick a quality preset, and click Compress Video. This free video compressor works as a video compressor online that runs entirely in your browser, so you can reduce video size and reduce video file size in seconds — no software to install and no account to create.
How much can I compress my video?
Depending on your settings, you can reduce video file size by 50-90%. The "High" preset keeps more detail with lighter compression, while "Low" gives you the smallest file with the highest compression.
Can I compress a 1GB or 2GB video online?
Yes. Because this free online video compressor processes your file locally, there is no server upload limit — you can compress a 1GB video online free and compress a 2GB video online as well. Larger videos simply use more of your device's memory, so a modern phone or computer is recommended for very large files.
Can I compress MP4, MOV, MKV and WebM?
Yes. You can compress MP4 online, compress MOV online, compress MKV online and compress WebM online. The output is always MP4 (H.264) for maximum compatibility. Because compression runs on your device, the file must use a video/audio codec your browser can decode and encode — most common files (H.264, HEVC, VP9, AV1 with AAC or Opus audio) work, but some unusual encodings may not.
Does this video compressor work on iPhone and iPad (iOS)?
Yes. On iOS and iPadOS 16.4 and later it works directly in Safari and other iPhone browsers. On versions before iOS 26 the browser can re-encode video but not audio, so the audio track may be left out of the compressed video; on iOS 26 and later, audio is fully supported. Keeping your device updated gives the best results.
Is my video uploaded to a server?
No. This compressor runs 100% inside your browser using the WebCodecs API. Your video stays on your device — nothing is uploaded, stored, or shared.
Which browser do I need?
A recent version of Chrome, Edge, or another Chromium-based browser works best. Safari 16.4+ on Mac and iOS also works (audio re-encoding needs iOS/macOS Safari 26+). The tool will tell you if your browser is not supported.
Is this tool privacy compliant?
This tool is built to be private by design: it performs all processing locally in your browser and does not transmit, collect, or store your video anywhere. Because no file data ever reaches a server, your content is never exposed to us or any third party.
Terms & Privacy
- This free video compressor is provided for general use on an “as is” basis. We do not guarantee exact compression results, browser compatibility, or preservation of original quality. Please keep a copy of your original file.
- All processing happens locally in your browser. Your video is never uploaded to, stored on, or transmitted to any server. We have no access to the content you compress.
- By using this tool, you confirm that you have the full legal right and permission to use, compress, and download the file. You are solely responsible for the content you process and for ensuring your use complies with all applicable laws.
- Because nothing is uploaded, no video data is collected. Basic anonymous technical data (such as browser type and error logs) may be used for analytics and improving the tool.