Who should use HoverTranslate?

HoverTranslate is a consumer product built for language learners who watch YouTube videos.

Is HoverTranslate free?

Yes — HoverTranslate is free to use.

What platforms does HoverTranslate run on?

HoverTranslate runs on the web and embeddable surfaces.

Is HoverTranslate still maintained?

The GitHub repository shows 3 commits in the last 90 days.

What projects are similar to HoverTranslate?

Similar projects tracked by PulseGate include Mouse Tooltip Translator, Subs Translate, and TransOver.

Who makes HoverTranslate?

HoverTranslate is developed by Kozii.

When did HoverTranslate launch?

HoverTranslate first shipped in 2023.

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HoverTranslate

Name: HoverTranslate
Author: Kozii

mozilla.orgLanguage learning

HoverTranslate is a Firefox extension for translating individual words and phrases in YouTube subtitles by hovering over them. It helps language learners understand native video content, build vocabulary, and continue watching without interrupting playback.

FreeMITWebEmbeddable

Visit mozilla.org

22stars

4forks

5features

2023since

Overview

5 features

In the Language learning space, HoverTranslate takes a focused approach. It focuses on understanding and learning vocabulary from YouTube subtitles without pausing videos or switching to a dictionary. HoverTranslate is a consumer product aimed at language learners who watch YouTube videos. HoverTranslate is free to use. HoverTranslate is available on the web and embeddable surfaces.

Behind HoverTranslate is Kozii, and it first shipped in 2023. Development happens publicly on GitHub with 22 stars and 3 commits in the last 90 days. Among its 5 catalogued features are hover translation, phrase translation, and youTube subtitles. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

Hover translation
Phrase translation
YouTube subtitles
Instant definitions
Vocabulary building

Built with & integrations

Written with

Claude Code

Runs on

BrowserEmbeddable

Written with — evidence

Claude Code: commit 9a662db56184 · since Feb 2026

Trust & compliance

License

MIT

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierGitHub · ★ 22Active maintenanceMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed9 Sept · 09:47 UTC
HoverTranslate - YouTube Subtitle Translator verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about HoverTranslate

What is HoverTranslate?: HoverTranslate focuses on understanding and learning vocabulary from YouTube subtitles without pausing videos or switching to a dictionary. It is catalogued under Language learning on PulseGate.
Who should use HoverTranslate?: HoverTranslate is a consumer product built for language learners who watch YouTube videos.
Is HoverTranslate free?: Yes — HoverTranslate is free to use.
What platforms does HoverTranslate run on?: HoverTranslate runs on the web and embeddable surfaces.
Is HoverTranslate still maintained?: The GitHub repository shows 3 commits in the last 90 days.
What projects are similar to HoverTranslate?: Similar projects tracked by PulseGate include Mouse Tooltip Translator, Subs Translate, and TransOver.Mouse Tooltip Translator Subs Translate TransOver
Who makes HoverTranslate?: HoverTranslate is developed by Kozii.
When did HoverTranslate launch?: HoverTranslate first shipped in 2023.

At a glance

Pricing: Free
Platforms: Web
Open source: Yes · ★ 22
License: MIT
Built for: language learners who watch YouTube videos
Model: B2C
Solves: Understanding and learning vocabulary from YouTube subtitles without pausing videos or switching to a dictionary.

Registered as

GitHub: kozii-d/hover-translate
Firefox Add-ons: hovertranslate

Developer

Kozii

Small team

GitHub

Open source

View on GitHub

Stars: 22
Forks: 4
Open issues: 0
Last commit: 24 Aug 2026
Commits 90d: 3
Contributors: 3
Authorship: Small team
Default branch: master

Index record

Indexed: 9 Sept 2026
Lifecycle: Alive
Last seen: 9 Sept 2026

Identity audit (13)

Slug: hovertranslate-youtube-subtitle-translator-mozilla-org
Lifecycle state recorded: 9 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 9 Sept 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 9 Sept 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/hovertranslate

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