ToolRecipe
Stays on this device No watermark Works offline

What do you need to get done?

Drop a file here

or .

/

Open an app

Follow a recipe

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Use one tool

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Change video speed

Make a video twice as fast or play it in slow motion at half speed, free and online. The new speed is written into the file, so it plays that way everywhere. Nothing is uploaded: the video is changed in your browser.

How to change the speed of a video

  1. 1Drop a video in, or click to choose one
  2. 2Pick 0.5× (slow motion) or 2× (faster)
  3. 3Click "Save video"
  4. A new video that plays at the speed you picked.

What happens to your video

  • Nothing is uploaded.Your video is read and re-encoded by your browser, on your own device.
  • Sound follows the picture.The sound is sped up or slowed down with the picture, so pitch changes like a tape.
  • Trim and rotate too.The same window has start and end handles and a rotate option.

What you can do

  • Slow a clip down to 0.5× or speed it up to 2×.
  • Cut the start and end at the same time with two handles, and watch the preview inside the kept part.
  • Turn the video or remove its sound in the same pass.
  • Open MP4, MOV, MKV, WebM, M4V, 3GP and TS files. You get an MP4, or a WebM if the original was WebM or MKV.

Good to know

  • Speed has three settings: 0.5×, normal and 2×. There is no free slider.
  • A new speed means the video is re-encoded, so it takes longer than a plain trim. The window tells you before you start.
  • The tool uses your graphics chip and works best in desktop Chrome or Edge.
  • The pitch of the sound changes with the speed. Remove the sound if that bothers you.

Questions

How do I speed up a video online?

Drop the video in, choose "2× (faster)" and save. The file is made in your browser.

Can I make a video slow motion?

Yes, choose "0.5× (slow motion)". The clip is twice as long and the sound is slower and lower.

Is my video uploaded?

No. It is read and re-encoded by your browser on your own device and never sent to a server.

Can I use a speed like 1.5×?

No. This tool offers 0.5×, normal speed and 2×.

Related tools

How it works

Small tools that run in your browser.

Four steps

  1. Start with a file or a task

    Drop a file, search, or pick a task.

  2. The tool opens in a window

    Open as many as you like, side by side as tabs.

  3. Results collect on the right

    Drag a result into the next tool.

  4. Save when you're done

    Saved files go to your downloads.

Who uses what

Tool sets for common jobs.

Put a tool on your home screen

The icon opens that tool, like an app.

iPhone and iPad

  1. Open the tool in Safari.
  2. Tap Share (the square with the arrow).
  3. Choose “Add to Home Screen”, then Add.

Android

  1. Open the tool in Chrome.
  2. Tap the menu (⋮) at the top right.
  3. Choose “Add to Home screen” or “Install app”.

Computer

  1. Open the tool in Chrome or Edge.
  2. Click the install icon in the address bar.
  3. Choose Install.

Skills

Claude skills we use ourselves, one job each.