Cobalt

Spec sheet

Purpose

Cobalt helps users save video, audio, photos, and GIFs from websites by pasting a link.Read 12 Oct 2026 · cobalt.tools

Intended users

The maker says Cobalt is used by artists, educators, and content creators.Read 12 Oct 2026 · cobalt.tools

Free plan

YesRead 20 Sep 2026 · cobalt.tools

Privacy

Cobalt says temporary tunnel data is encrypted with AES-256, stored in server RAM for 90 seconds, and then irreversibly purged.Read 12 Oct 2026 · cobalt.tools

Support

Cobalt directs bug reports and recurring issues to GitHub and other questions to Discord; support is best effort and not guaranteed.Read 12 Oct 2026 · cobalt.tools

Ads and tracking

Cobalt says it has no ads or trackers and does not store or track information about individual people.Read 12 Oct 2026 · cobalt.tools

Analytics

Cobalt says it uses self-hosted Plausible for anonymous, aggregated traffic analytics and provides an option to opt out.Read 12 Oct 2026 · cobalt.tools

Audio options

Audio settings offer Best, MP3, OGG, WAV, and Opus formats and bitrate choices from 320kb/s to 8kb/s.Read 12 Oct 2026 · cobalt.tools

Community instances

Cobalt warns that it does not control community processing instances and advises users to choose hosts they trust.Read 12 Oct 2026 · cobalt.tools

Device platforms

webRead 20 Sep 2026 · cobalt.tools

Device processing

When supported, media requiring additional processing is processed on the user’s device; otherwise, server processing streams the result without storing it on disk.Read 12 Oct 2026 · cobalt.tools

Formats

Cobalt’s remux tool supports MP4, WebM, MP3, OGG, Opus, WAV, and M4A files.Read 12 Oct 2026 · cobalt.tools

Hosting protections

The privacy policy says Cloudflare is used for DDoS and abuse protection, bot protection, and hosting and deploying the web app.Read 12 Oct 2026 · cobalt.tools

Limits

Cobalt says its downloader can only download free and publicly accessible content.Read 12 Oct 2026 · github.com

Local processing

Cobalt says remuxing and transcoding can happen directly on the user's device; its remux page says files stay on the device.Read 12 Oct 2026 · cobalt.tools

Maximum video quality

8kRead 20 Sep 2026 · cobalt.tools

Output formats

MP4,WebM,MKV,MP3,OGG,WAV,Opus,GIFRead 20 Sep 2026 · cobalt.tools

Pricing model

Cobalt describes itself as a service made for public benefit and not for profit, and invites users to support it with donations.Read 12 Oct 2026 · cobalt.tools

Remux behavior

Cobalt says remuxing copies existing codec data into a new container without re-encoding the media.Read 12 Oct 2026 · cobalt.tools

Remux formats

The remux page lists MP4, WebM, MP3, OGG, Opus, WAV, and M4A as supported formats.Read 12 Oct 2026 · cobalt.tools

Remuxing

Remuxing copies existing codec data into a new media container without re-encoding, and runs locally on the device.Read 12 Oct 2026 · cobalt.tools

Security services

Cobalt says it uses Cloudflare for DDoS and abuse protection, bot protection through Turnstile, and hosting and deployment of the web app.Read 12 Oct 2026 · cobalt.tools

Self-hosting

Cobalt says it is easily self-hostable and links to instructions for running an instance with Docker Compose or outside Docker.Read 12 Oct 2026 · github.com

Subtitle downloads

YesRead 20 Sep 2026 · cobalt.tools

Subtitles

Cobalt can add subtitles in a preferred language when they are available, subject to service-specific limitations.Read 12 Oct 2026 · cobalt.tools

Supported services

The homepage has a supported-services section, but the opened page did not expose the service names.Read 12 Oct 2026 · cobalt.tools

Supported sources

Bilibili,Bluesky,Dailymotion,Instagram,Facebook,Loom,Newgrounds,OK.ru,Pinterest,Reddit,RuTube,Snapchat,SoundCloud,Streamable,TikTok,Tumblr,Twitch Clips,Twitter/X,Vimeo,VK Videos & Clips,YouTubeRead 20 Sep 2026 · cobalt.tools

Video options

Video settings list quality choices from 8K+ through 144p, codec preferences, and MP4, WebM, or MKV containers.Read 12 Oct 2026 · cobalt.tools

Web app

The maker describes Cobalt as a web app that works anywhere and has no ads, trackers, or paywalls.Read 12 Oct 2026 · cobalt.tools

Where Specifiction places it

• Video Downloaders#92 of 1357.6