Video Compressor
Compress videos online for free. Reduce file size by up to 90% while maintaining excellent quality.
Video Compressor (Online)
Compress video files to meet upload limits without ruining clarity. Use our presets for sharing, social media, and web upload—and learn what actually reduces size (bitrate, resolution, and codec).
Preset recommendations
- Share (balanced): good quality, noticeably smaller
- Small file: for messaging/email limits
- Maximum compression: for strict limits (quality will drop)
What affects file size?
- Bitrate: biggest lever; lower bitrate = smaller size
- Resolution: 1080p → 720p can cut size significantly
- Frame rate: reducing fps helps screen recordings
Troubleshooting
- Blurry output: use a higher preset or keep resolution higher.
- Processing slow: large videos take time—try trimming first.
- Upload fails: split the video into parts.
Privacy & Security
To process your file, FastlyConvert temporarily uploads it to our servers, converts it, and then automatically deletes it within 24 hours. Transfers use HTTPS encryption. We do not sell your files or use them to build public datasets. If you need immediate deletion assistance, contact us at support@fastlyconvert.com. Compressed outputs are created on-demand and removed automatically after processing finishes.
FAQs
- Will it remove audio? No, unless you choose an audio-only tool like MP4 to MP3.
- Best settings for WhatsApp/email? Use the Small file preset and aim for your target size.
Copyright & acceptable use: Please upload only files you own or have permission to use. Do not upload illegal, infringing, or sensitive personal content.
Drop video file here
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Supports MP4, MOV, AVI, WebM, MKV up to 500MB
video.mp4
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Compression Settings
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Understanding Video Compression
Learn how video compression works and how to get the best results for your specific needs.
psychology How Video Compression Works
Video compression reduces file size by removing redundant information that your eyes won't notice. Modern codecs like H.264 and H.265 use sophisticated algorithms to analyze each frame and encode only the changes between frames (temporal compression) and similar areas within each frame (spatial compression).
The result is dramatic file size reduction—often 90% or more—while maintaining visual quality that's nearly indistinguishable from the original.
Key Compression Factors:
- arrow_right CRF (Constant Rate Factor) - Controls quality vs file size balance
- arrow_right Resolution - Lower resolution = smaller files
- arrow_right Bitrate - Data per second of video
- arrow_right Frame Rate - Fewer frames = smaller files
Light Compression
~30-40% size reductionMinimal quality loss. Best when quality is your top priority and you only need modest file size reduction.
✓ Professional video projects
✓ High-quality archives
✓ YouTube uploads (maintains quality)
Medium Compression
~50-70% size reductionBest balance between quality and file size. Recommended for most use cases.
✓ Social media sharing
✓ Cloud storage backup
✓ Email attachments
Heavy Compression
~80-90% size reductionMaximum file size reduction. Some visible quality loss, but great for size-critical situations.
✓ WhatsApp/Telegram sharing
✓ Limited storage devices
✓ Preview/draft videos
Video Resolution Guide
| Resolution | Pixels | Best For | Est. Bitrate |
|---|---|---|---|
| 4K UHD | 3840×2160 | Large screens, professional work | 15-30 Mbps |
| 1080p Full HD | 1920×1080 | Most screens, streaming | 5-10 Mbps |
| 720p HD | 1280×720 | Mobile, smaller screens | 2-5 Mbps |
| 480p SD | 854×480 | Low bandwidth, small files | 1-2 Mbps |
| 360p | 640×360 | Previews, thumbnails | 0.5-1 Mbps |
tips_and_updates Pro Tips for Video Compression
- check_circle Keep your original files - Always save a backup before compressing. Video compression is lossy—you can't uncompress to restore quality.
- check_circle Match resolution to display - There's no benefit to 4K if your audience watches on phones. 1080p or 720p is often sufficient.
- check_circle Consider content type - Videos with lots of motion (sports, action) need higher bitrates than static content (presentations, talking heads).
- check_circle Test different settings - Compress a short clip first to check quality before processing a long video.
Why Compress Videos?
Faster Uploads
Upload videos to social media and cloud storage faster
Email Attachments
Make videos small enough to send via email
Save Storage
Free up space on your device and cloud storage
Easy Sharing
Share videos on messaging apps without size limits
Web Optimized
Faster loading times for website videos
Secure & Private
Your videos are processed securely
Frequently Asked Questions
How much can I compress my video?
Depending on the original video and compression settings, you can typically reduce file size by 50-90% while maintaining good quality. The actual reduction depends on the source video's encoding and content.
Will I lose video quality?
Our smart compression algorithms minimize quality loss. With "Light" compression, quality loss is nearly imperceptible. "Medium" offers a great balance, while "Heavy" prioritizes smaller size.
What video formats are supported?
We support all major video formats including MP4, MOV, AVI, WebM, MKV, and more. The output is always in MP4 format for maximum compatibility.
Is there a file size limit?
Free users can compress videos up to 500MB. Pro users enjoy unlimited file sizes and additional features.