HEVC Compressor

Compress HEVC (H.265) video files by adjusting quality, resolution, or bitrate. Reduce 4K and 1080p footage for storage and sharing.

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Supports: HEVC

OptionsAdvanced Options - Our defaults are optimized for the best results. We recommend you keeping the defaults unless you have a specific need.
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File Compression
File size (%)
1
80
100
If your file is 10 MB, then selecting 80 will produce a 8 MB file. If you make the output file size too small, then output video quality may suffer.
Auto Scale
[Smart Scaling Active] We will automatically adjust the image dimensions to maximize quality while hitting your target file size. Manual resolution settings are hidden to prevent pixelation.
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How to Compress HEVC Files Online

  1. Upload Your HEVC Files: Click "+ Add Files" to select HEVC (H.265) files from your computer, Google Drive, or Dropbox.
  2. Choose Compression Settings: Select compression method — quality preset (Highest to Lowest), target file size percentage, specific file size in MB, constant/variable bitrate, or CRF quality level. Optionally change resolution (1080p, 720p, 480p, percentage, or custom dimensions).
  3. Download Compressed Files: Click "Compress" and download your smaller HEVC files.

How HEVC Compression Works

HEVC (H.265) is already one of the most efficient video codecs — it's 30-50% more efficient than H.264. But further compression is still possible:

  • Lower the quality setting (CRF) — CRF 18 is visually lossless, CRF 23 is the default, CRF 28 is noticeably compressed. Each +6 CRF roughly halves the file size.
  • Reduce resolution — Downscaling 4K to 1080p cuts file size by 60-75% and is often imperceptible on smaller screens.
  • Lower the bitrate — Directly cap the maximum data rate for predictable file sizes.

Compression Results

Source Method Result Reduction
4K 60fps (500MB) 4K → 1080p ~125MB 75%
4K 30fps (300MB) CRF 23 → CRF 28 ~150MB 50%
1080p (200MB) CRF 23 → CRF 28 ~100MB 50%
1080p (200MB) 1080p → 720p ~80MB 60%

Where HEVC Files Come From

  • iPhones (iPhone 7 and later) record in HEVC by default
  • Samsung Galaxy phones use HEVC for high-efficiency recording
  • 4K cameras — Sony, Canon, Panasonic mirrorless cameras output HEVC
  • Screen recordings — macOS and iOS screen recordings use HEVC
  • Drones — DJI drones record 4K HEVC

Frequently Asked Questions

Is it free?

Yes. Completely free with no watermarks, no sign-up required, and no file count limits.

Does compression reduce video quality?

It depends on your settings. Mild compression (CRF 23-25) is barely noticeable. Aggressive compression (CRF 30+) will show visible artifacts, especially in fast motion and detailed scenes.

Should I compress or convert to a different format?

If your devices support HEVC, compress and keep HEVC — it's already the most efficient widely-supported codec. Converting to H.264 would actually increase file size.

Can I compress 4K HEVC without losing 4K resolution?

Yes. Adjust quality/bitrate settings without changing resolution. You'll get a smaller file that's still 4K.

Does it work on mobile?

Yes. Works in any modern browser on all devices — no app installation required.

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