Change video speed
Make a clip faster or slower, from quarter speed to four times. The sound follows along so picture and audio stay together.
🔒 Your videos never leave your device.
Three steps
How it works
- 1
Choose a video
Pick the file from your device or drag it onto the page. Nothing is sent anywhere.
- 2
Change speed
Adjust the settings if you want to, then start. The work happens in your browser.
- 3
Download
Save the result right away. It is ready the moment the run finishes.
Supported formats
Good to know
Frequently asked questions
Does the video lose quality?
Only when it has to be re-encoded. Cutting, joining and removing the sound track copy the picture data unchanged, so those are lossless. Compressing and adding a watermark do re-encode, which is why they take longer.
How long may a video be?
There is no fixed limit. What decides is the memory of your device: a phone manages a few minutes comfortably, a computer handles far more. If a long video fails, splitting it first and working on the parts usually helps.
Are my files uploaded to a server?
No. The whole job runs inside your browser, on your own device. Your file never travels over the network, so there is nothing for us to store, read or lose.
Does it cost anything?
No. There is no account, no trial and no upload limit tied to a plan.
Does this work on a phone?
Yes, on Android and on iPhone. The browser does the work, so no app has to be installed.
How large can a file be?
The limit is your device's memory rather than a rule we set. Very large files work on a computer and can fail on an older phone.
Private by design
Your files stay on your device
Your videos never leave your device.