Khan Academy Video Downloader
Save Khan Academy lessons as MP4 — one at a time or up to 20 in a batch — so you can study without a connection.
Why download Khan Academy videos with ViralMint?
Khan Academy's lessons are free to watch and licensed Creative Commons BY-NC-SA, which makes downloading them for offline study straightforwardly legitimate — the licence asks for attribution and non-commercial use, not for you to stay online. That matters because the people who most need offline access are usually the ones on metered or intermittent connections. Unit and course URLs are not expanded into their lessons, but you can paste up to 20 lesson URLs at once, one per line, and they download in a single queued job. The platform also publishes real subtitle tracks rather than auto-captions, and ViralMint saves those alongside the MP4, so the transcript you study from is the one the instructor wrote.
How to download from Khan Academy
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Copy the Khan Academy video URL
From khanacademy.org, copy the share or page URL — e.g.
https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:foundations/x2f8bb11595b61c86:intro-to-variables/v/what-is-a-variable -
Paste it into ViralMint
Open the ViralMint desktop app and paste the URL into chat. The planner detects the Khan Academy URL and triggers the download automatically — no flags, no command line.
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Get the mp4, transcript and AI insights
The video lands in the Videos page with a local Whisper transcript and AI-extracted hook / structure / tone — ready for clip extraction or repurposing.
Frequently Asked Questions
Is it legal to download Khan Academy videos?
Their lessons are published under Creative Commons BY-NC-SA. That licence permits saving and sharing with attribution for non-commercial purposes — so offline study is fine, and reselling the material is not. Check the licence note on the page you are downloading, since a small number of partner videos differ.
Can I download a whole unit at once?
Not from the unit link — the app downloads each URL as one video and does not expand a unit or course. Open the unit, copy the lesson URLs and paste up to 20 of them into the Video Download page, one per line, and they download in a single queued job, which is the quickest way to build an offline study set.
Do I get the subtitles too?
Yes, where Khan Academy publishes them — and they are real written subtitles, not machine captions. ViralMint saves the track next to the MP4 so it loads automatically in any normal player.
How ViralMint compares to other Khan Academy downloaders
| Approach | Examples | Trade-off | ViralMint advantage |
|---|---|---|---|
| Online converters | Y2mate, SaveFrom, ssyoutube, OnlineVideoConverter | Pop-up ads, redirects, quality capped at 720p, file-size limits, no batch downloads, your URL logged to ad networks | Local app, zero ads, original quality (up to Up to 1080p), unlimited file size, batch mode |
| Browser extensions | Video DownloadHelper, FastestTube, similar Chrome / Firefox add-ons | Routinely broken after Khan Academy updates, removed from stores for ToS violations, no transcript or AI analysis | Updates with yt-dlp upstream (community-maintained), independent of browser extension stores, Whisper transcript built in |
| yt-dlp command line | yt-dlp, youtube-dl | Most flexible option but requires terminal comfort, manual cookie handling, no GUI for batch selection | Same yt-dlp under the hood, wrapped in a desktop GUI with cookie auto-detect, batch UI, and post-processing pipeline |
| Closed-source desktop apps | 4K Video Downloader, Allavsoft, ByClick Downloader | Closed-source, paid tiers gate batch and HD, no AI pipeline, no extensible Whisper / FFmpeg post-processing | Open source (AGPL-3.0), AI features prepaid per-action, integrates with the rest of the ViralMint creator pipeline |
Supported URL Example
https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:foundations/x2f8bb11595b61c86:intro-to-variables/v/what-is-a-variableEquivalent yt-dlp command
If you already use yt-dlp, the desktop app's Khan Academy download is equivalent to running:
yt-dlp -f "bv*+ba/b" --merge-output-format mp4 "https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:foundations/x2f8bb11595b61c86:intro-to-variables/v/what-is-a-variable"ViralMint also auto-runs Whisper transcription, downloads the thumbnail, and extracts AI hook / structure / tone insights — steps that take a separate command chain in raw yt-dlp.