Yes, it's completely free and no sign-up is required.

Are my files uploaded to a server?

No. Video speed runs in your browser: your files and data never leave your device.

Does it work on my phone?

Yes. It works in the browser on phones, tablets and computers, with nothing to install.

Video speed

Speed up or slow down your videos.

Video Processed on your device

You upload

timelapse.mp41:00

You download

timelapse-4x.mp40:15

Was this tool helpful?

Is Video speed free?: Yes, it's completely free and no sign-up is required.
Are my files uploaded to a server?: No. Video speed runs in your browser: your files and data never leave your device.
What formats does Video speed accept?: Accepts: MP4, MOV, WEBM.
Does it work on my phone?: Yes. It works in the browser on phones, tablets and computers, with nothing to install.