Mastershot

mastershot.app

Mastershot is a free set of browser tools for compressing, trimming, and converting video, images, and audio. It is for anyone who needs to edit or convert media files without installing software. All processing happens locally in the browser, so files are not uploaded.

Productivity

What it does

  • Trim video lets you choose where your video starts and ends.
  • Compress video lets you select a quality level and compare the result.
  • Combine videos joins two clips into one video.
  • Add audio to video puts music or a voiceover under a video.
  • Remove video background puts a person on a new background, or none.
  • Image converter makes JPG, PNG, WebP, or ICO from any picture, and Audio converter handles MP3, WAV, M4A, FLAC, Ogg, or an iPhone ringtone.

Pricing

All tools are free to use with no account and no watermark on the files you save.

Good to know

  • Runs in Chrome, Edge, or Safari on a computer.
  • Files are processed locally and are not sent to Mastershot servers.
  • The Video Compatibility Checker shows a video's container, codecs, tracks, and browser decoder support without uploading or changing the file.

Questions & answers

Are the tools free?
Yes. Mastershot compresses, trims, crops, and converts video, images, and audio for free. There is no account to create and no watermark on the files you save.
Do my files get uploaded?
No. These tools process your videos, images, and audio locally in your browser. Your files are not sent to Mastershot servers.
Why does a file play here but fail an upload?
Playback and upload rules are different. Size, container, and codec requirements are often stricter than browser playback.
How much smaller is the MP3 when converting from WAV?
A minute of CD-quality stereo WAV is about 10 MB. As MP3 it's about 1.2 MB.

In their words

Your files stay on your device
Free, in your browser

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