Universal capture Opt-in
Turn it on for a site and SubtitleDown picks up every subtitle file the player loads — even streams split into hundreds of small segments, reassembled into one clean track.
New · Free online subtitle converter
Download subtitles from YouTube and any site that plays video
One click for every caption track — manual, auto-generated or auto-translated. Batch whole playlists into a ZIP, merge two languages into one file, clean and translate on your own device.
Free · No account · Chrome & Edge
Try the online converter- input formats
- 8
- export formats
- 4
- translation languages
- 150+
- accounts or servers
- 0
Works where your videos are
- YouTubeNative
- Any websiteUniversal capture
- HLS streamsStitched automatically
- DASHText tracks
- HTML5 players<track> captions
- Online coursesUniversal capture
Native Netflix, Disney+, Prime Video and Max support is on the roadmap.
Everything you need.
Built for people who actually work with subtitles: learners, translators, editors and course creators.
Flexible export
Save as SRT, WebVTT, ASS, plain TXT or the original file. Top-positioned lines, italics and bold survive the conversion.
Batch download
Pick several languages and get one ZIP. On YouTube, download a whole playlist in your language as numbered files.
On-device translation
Translate any track with the AI built into Chrome. Nothing is uploaded — the model runs on your computer.
Dual subtitles
Merge two languages into one ASS file: your language at the bottom, the original on top. Perfect for language learning.
Built-in editor
Fix sync, convert frame rates, strip [Music] and (laughs), repair broken characters like “café”, fix overlaps — with undo.
Universal captureRead the Universal guide
Stop checking for support.
Native integrations can never cover every niche video site. Universal capture works on almost any site whose player loads plain subtitle files, including segmented HLS and DASH tracks.
Native quality everywhere
Captured files go through the same parsers as YouTube: encoding is repaired, segments are stitched with their real timings, and you export SRT or styled ASS.
Safe and transparent
Nothing runs until you switch it on for a site. Chrome asks for access to that one site only, and you can revoke it any time in Settings.
Three clicks to a clean subtitle file
- STEP_01
Open a video
Go to a YouTube video, or switch on Universal capture for any other site and play the video with subtitles on.
- STEP_02
Click the SubtitleDown icon
Every detected track is listed with its language and type. Tick the ones you want.
- STEP_03
Download or edit
Choose a format and download — one file, a ZIP, a dual-language ASS, or open it in the editor first.
Extension vs alternatives
Why a dedicated extension beats copying URLs into a website.
| Online tools | Userscripts | SubtitleDown | |
|---|---|---|---|
| Workflow | Copy URL, paste, wait | Install a script manager first | One click on the page |
| All-in-one | Download only | Usually one site | Download, convert, edit, translate |
| Batch download | no | partial | yes |
| Formats | SRT, sometimes VTT | Varies | SRT, VTT, ASS, TXT + original |
| Any website | no | no | yes |
| Privacy | Your URLs go to their server | Depends on the author | Runs entirely in your browser |
| Maintenance | Breaks when sites change | Manual updates | Automatic updates |
Simple, transparent pricing
Everything SubtitleDown does today is free. Pro will add native streaming platforms when they ship.
No limits on the free plan: unlimited downloads, every format, every feature.
Free
Everything you need for YouTube and Universal capture.
$0Free forever
- Unlimited downloads
- YouTube: manual, auto and translated tracks
- Universal capture on any site
- SRT, VTT, ASS, TXT and original format
- Batch ZIP and playlist download
- Dual subtitles
- Editor and on-device translation
- Community support
Pro
For power users who watch on streaming platforms.
$2.00/month$23.99 billed yearly
- Everything in Free
- Native Netflix, Disney+, Prime Video and Max
- Season batch download
- Multi-language batch in one click
- Priority email support
- Support independent development
No contracts · Cancel any time · Prices include VAT where applicable
Frequently asked questions
Which formats can I export?
SRT, WebVTT, ASS and plain TXT (with or without timestamps). For files captured on other sites you can also keep the original file exactly as the site served it.
Which formats can it read?
SRT, WebVTT, ASS, SSA, TTML, DFXP, SBV and YouTube’s own caption formats (json3, srv1–srv3). Segmented HLS/DASH subtitles are stitched into one track.
Can I download subtitles for a whole playlist?
Yes. Open the playlist on YouTube, choose a language in the Playlist section of the popup and SubtitleDown saves one numbered file per video in a ZIP. Keep the popup open while it runs.
What if my language isn’t available?
On YouTube you can pick any of YouTube’s auto-translation languages. For any track you can also open the editor and translate it on your device with Chrome’s built-in AI (Chrome 138 or later on desktop).
Which websites are supported?
YouTube works natively. Every other site works through Universal capture as long as its player loads plain-text subtitle files — that covers most course platforms, news sites and many video hosts. Netflix, Disney+, Prime Video and Max native support is planned.
Is it really free?
Yes. There is no account, no download limit and no paid feature in the current version. Pro is planned for native streaming-platform support; the free plan will keep everything it has today.
Do you see what I watch?
No. SubtitleDown has no servers. Subtitles are fetched and processed inside your browser and saved straight to your Downloads folder. Translation runs on your device.
Why does Universal capture ask for permission?
To read the subtitle files a site loads, the extension needs access to that site. Chrome asks you once per site, and you can remove access any time from SubtitleDown’s Settings page.
Universal capture finds nothing. What now?
Reload the page after enabling it, start the video and turn its subtitles on. If the video plays in an embedded player from another domain, add that domain in Settings. DRM-protected streams and subtitles packed inside video segments are not supported.
Does it work in Edge, Brave or Firefox?
It works in Chrome 111+, Microsoft Edge and other Chromium browsers such as Brave and Opera. A Firefox version is planned.
Is downloading subtitles legal?
Subtitles can be copyrighted. Use SubtitleDown for personal use such as studying, accessibility or translating your own content, and respect each site’s terms.
Ready to grab your first subtitle?
100% free · No account · No credit card