How to Compress Video Without Losing Quality
Video compression is a balancing act. You want smaller files, but you don't want a pixelated mess. Here's how to get it right.
Step 1: Choose Your Format
For most users, H.264 MP4 is the best choice. It's supported everywhere — every browser, every phone, every social media platform. If file size matters more, VP9 WebM is 20-30% smaller at the same quality.
Step 2: Set the Quality Slider
Use our Compress Video tool and adjust the quality slider:
- 90-100% — Near-lossless. Good for archiving important videos.
- 70-85% — The sweet spot. Noticeable size reduction with minimal quality loss.
- 50-70% — More aggressive. Good for sharing via messaging apps.
Step 3: Target a Specific Size
If you need to hit a specific file size limit, use our purpose-built tools:
- Compress to 10MB — Email attachments
- Compress to 25MB — Discord/Twitter limits
- Compress for Email — Gmail/Outlook optimized
- Compress for Discord — Discord Nitro optimized
Understanding CRF (the Rate Factor)
CRF stands for Constant Rate Factor. It controls how much quality you keep versus how much you discard:
| CRF | Quality | Best For |
|---|---|---|
| 18-20 | Visually lossless | Archiving, editing |
| 21-24 | Very good | High-quality uploads |
| 25-28 | Good | Web sharing, social media |
| 29-32 | Acceptable | Email attachments |
MediaKit automatically translates the quality slider to the right CRF value for you — no need to memorize these.
Does It Work on All File Types?
Yes. Our compressor handles MP4, MOV, AVI, WebM, MKV — all processed in your browser. No upload, no wait.
One More Thing: Audio Matters Too
If your video is mostly talking, drop the audio bitrate to 64 kbps. You'll save 50% on the audio track without hearing the difference.