Last updated 07-25-2026
Category:
Reviews:
Join thousands of AI enthusiasts in the World of AI!
cobalt
cobalt is a web app for saving video, audio, photos, and GIFs from links you paste. Drop in a URL from a supported site and download the media without ads, trackers, or paywalls getting in the way.
The project is built for privacy: requests are anonymous, file tunnel metadata is encrypted, and the service follows a zero-log policy. When remuxing or transcoding is needed, cobalt processes media on your device when possible so files never leave your machine.
It also includes a beta remux tool that fixes container issues in mp4, webm, mp3, and other formats using lossless on-device processing. cobalt is open source, self-hostable, and maintained by the imput community.
Paste a link to download video, audio, photos, or GIFs from supported websites
No ads, trackers, or paywalls on the official cobalt web app
Processes remux and transcode jobs on your device when supported for better privacy
Optional forced tunneling hides download sources from your network provider
Beta remux tool fixes container issues in common media formats without re-encoding
No ads, trackers, or paywalls on the official web app.
Strong privacy design with anonymous requests and optional forced tunneling.
Open source and self-hostable with community instance support.
Saving is limited to supported sites and formats.
Support is community-driven via Discord and GitHub, not guaranteed response times.
What can I download with cobalt?
cobalt saves video, audio, photos, and GIFs from supported websites. Paste the link into the web app and download the file directly.
Does cobalt store my downloads or track users?
No. cobalt follows a strict zero-log policy. Requests are anonymous, tunnel metadata is encrypted, and processing servers stream content through RAM without writing files to disk.
What does the cobalt remux tool do?
Remux fixes container issues in files such as mp4, webm, mp3, ogg, opus, wav, and m4a. It copies codec data into a new container losslessly and runs locally on your device.
Is cobalt free to use?
Yes. The official cobalt instance at cobalt.tools is free. The project accepts optional donations to support development but does not charge for downloads.
Can I self-host cobalt?
Yes. cobalt is open source and self-hostable. Source code and instance setup docs are available on GitHub, and you can add community-hosted instances in settings.