Compress video

No. Analysis, preview and processing use the video in your browser. A report and optional sample are sent only after you explicitly choose and authorize them.

MP4, MOV or WebM, up to 100 MB, 1080p and 30 FPS. One video track and at most one mono or stereo audio track. MP4 output depends on browser support. Up to 90 seconds per operation. HDR and transparent videos are not supported.

It depends on the original. We reduce resolution and the data used for the video image. Detail is lost; check text, motion and sound. If the result is not smaller, we keep the original with its format and content. A specific file size is not guaranteed.

There is no guarantee. Even a short video can use a lot of memory and battery while being re-encoded. We process one file at a time with bounded queues, progress and cancellation. The time limit is 90 seconds. Resource use and speed depend on your device; try a smaller file if processing fails.

Smaller file limits the image to 480p; Balanced limits it to 720p. We keep the aspect ratio, orientation and up to 30 FPS without upscaling. The limit adapts to portrait videos.

We accept at most one audio track. AAC is copied; other supported audio is converted to AAC. Subtitles, chapters and descriptive tags are not copied into the compressed version. If we keep the original, its content remains intact.

No. We use the browser’s native encoders without uploading files for processing. Support is checked before compression. If it is unavailable, we tell you; nothing is sent to a server automatically.

There is no fixed limit in minutes. We accept files up to 100 MB within the listed format, resolution and frame rate limits. Processing has a 90-second time limit and can be cancelled; long or complex videos may exceed your device’s resources.