4 items
Interactive language-learning subtitles on YouTube, Netflix, and any video site — synced with your Marfondo account. Learn a language from the shows and videos you already watch. Marfondo Subtitles adds interactive subtitles to YouTube, Netflix, Crunchyroll, and other video sites. Click any word to see its meaning, mark words as known or unknown, and save them to your Marfondo vocabulary — all without leaving the video. • Clickable subtitles: tap any word for a definition and translation • Two lines at once: your study language, with a translation in your native language underneath • Full transcript panel: every line of the video, click to jump to it • Keyboard shortcuts: step line by line (A / D), mark words with 1, 3, 4 • Drag the subtitles anywhere on the player; your position is remembered • Tracks your study time, and only counts videos recorded in your study language • Works on YouTube, Netflix, and Crunchyroll out of the box; turn it on for other video sites with one click • Everything syncs with your Marfondo account and the Marfondo web app Requires a Marfondo account (marfondo.com). [Free / Pro line — see below] Marfondo is not affiliated with YouTube, Netflix, Crunchyroll, or any other video service.
Nov 3, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.