Free tool to extract YouTube video subtitle text and translate it into many languages, with copy/download, a Chrome extension, and traffic funneled to sister product SubKun.
Grab an exact-mOne-line growth story, compiled by us from public sources; speculation is marked separately below.
Checkout: checkout.stripe.com
“"completely free. No sign-up, no account, no limits."; "SubKun adds dual subtitles to any YouTube video. Free."; Chrome Web Store "3,000+ users · 4.6 stars"; r/YouTubeTranscript”Quote from the site
New-user source: GEO (AI assistants). Search 49.2%, direct 38.1%, AI assistants 7.6% (classified as GEO). Search terms are generic terms like youtube transcript and youtube transcript generator, plus French transcription video youtube en texte gratuit; social comes from YouTube, Reddit and TikTok. Existing users come back directly or use it via the Chrome extension.
Top channel measured by Similarweb, others estimated by rank
| Attributable new users, last month | Share |
|---|---|
| GEO | 8% |
| Other | 92% |
Direct + brand search 87%. Direct and brand search count as viral only when the site shows sharing mechanics; the largest share wins, under 5% means Other.
| Country | Share of visits |
|---|---|
| United States | 18.57% |
| India | 11.23% |
| France | 7.91% |
| Vietnam | 7.03% |
| Australia | 2.86% |
Mainly English, also Chinese/Japanese/Korean/Spanish/French/Portuguese/Vietnamese/Thai/Arabic, etc.
YouTube, Reddit, TikTok
Gen AI is #3 channel, no % shown
1.4K keywords · brand ~87% · organic 100% / paid 0%
| Similarweb top 5 keywords |
|---|
| youtube transcript |
| youtube transcript generator |
| transcription video youtube en texte gratuit |
| youtube to transcript |
| youtube video transcript |
| Category | Share of referrals |
|---|---|
| Computers Electronics and Technology - Other | 3.11% |
About 8,596 last month (Similarweb estimate), #352 of 606; the month before was 207. Opening checkout is not paying, so this is not revenue.
New-user source: GEO (AI assistants). New users mostly come from ChatGPT and other AI assistants Search 49.2%, direct 38.1%, AI assistants 7.6% (classified as GEO). Search terms are generic terms like youtube transcript and youtube transcript generator, plus French transcription video youtube en texte gratuit; social comes from YouTube, Reddit and TikTok. Existing users come back directly or use it via the Chrome extension.
Completely free, no sign-up, no limits
Dossier confidence: medium. Parts 1 and 2 come from reading the site and Similarweb data; part 3 from public reporting, founder posts, Wayback snapshots, WHOIS and similar, with speculation marked.
The number: checkout visits is Similarweb's estimate of visits from the site to a checkout payment page; opening checkout is not paying, so this is not revenue. Small sites land on fixed buckets.
Data through last month. Page updated 2026-10-26.
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