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Letterbox

Add cinematic black bars to any video. Choose popular aspect ratios like 2.35:1 Cinemascope or 21:9 ultrawide.

Letterboxing adds horizontal black bars above and below a video (or image) so it plays in a wider cinematic aspect ratio such as 2.35:1 Cinemascope, 2.39:1, or 21:9 without cropping the picture. EditClips.online adds letterbox bars free in your browser: drop a video or image, pick the ratio preset, choose the bar color (black by default), click Process, and download the result — no upload, no watermark.

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Cinematic 2.35:1
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Original
Cinematic 2.35:1

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How to Use Letterbox

  1. Upload a video or image
  2. Select the cinematic aspect ratio
  3. Choose bar color (black by default)
  4. Click Process and download

Features

  • Add cinematic black bars for widescreen look
  • Multiple aspect ratio presets — 2.35:1, 2.39:1, 21:9
  • Custom bar color
  • Works with video and images

Frequently Asked Questions

What is letterboxing?
Letterboxing adds horizontal bars to the top and bottom of a video to simulate a wider cinematic aspect ratio, like 2.35:1 used in movies.
What aspect ratio should I use?
2.35:1 (Cinemascope) is the most common cinematic ratio. 2.39:1 is used in modern Hollywood films. 21:9 matches ultrawide monitors.
Will this change my video resolution?
No. The bars are drawn over the existing frame, keeping the original resolution. The visible image area within the bars has the cinematic ratio.

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