LexiSpark: Science-Backed Video Learning

Name: LexiSpark: Science-Backed Video Learning
Author: Rnbsov

By: Rnbsov Add-on

Learn languages from YouTube & HDrezka videos with dual subtitles, word translation, and FSRS spaced repetition.

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-07-26

Version:

0.1.2

Last updated: 2026-05-15

Features & Capabilities

LexiSpark is a science-backed language learning tool that turns your favorite videos into interactive lessons. Seamlessly integrate dual subtitles and instant word translations into YouTube, Netflix, Coursera, and HDrezka.

Key Features: Smart Overlays: Interactive subtitle translation on top streaming platforms. FSRS Spaced Repetition: Save new vocabulary and learn it efficiently using scientifically proven memory algorithms. Contextual Learning: Learn words as they are used in real movies and lectures

User Growth & Download Statistics

Add-on

By:

Rnbsov

Daily users:

Version:

0.1.2 Last updated: 2026-05-15

Version code:

6258297

Creation date:

2026-05-09

Risk:

Permissions:

Host permissions:

*://*.youtube.com/*
*://*.hdrezka.ag/*
*://*.hdrezka.me/*
*://*.hdrezka.co/*
*://*.hdrezka.cm/*
*://*.hdrezka.kim/*
*://*.hdrezka.sh/*
*://*.rezka.ag/*
*://*.rezkify.com/*
*://*.rezkery.com/*

Content scripts matches:

*.coursera.org
*.crunchyroll.com
*.hdrezka.ag
*.hdrezka.cm
*.hdrezka.co
*.hdrezka.kim
*.hdrezka.me
*.hdrezka.sh
*.rezka.ag
*.rezkery.com

Size:

1.42MB

Email:

su*****@lexispark.app

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-26

Compare stats and ranking:

Ranking

# 148,201 ▲ 1,548

For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Rnbsov

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/lexispark/

Email:

su*****@lexispark.app

Website:

https://t.me/LexiSpark_Contact

Is LexiSpark: Science-Backed Video Learning Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

LexiSpark: Science-Backed Video Learning requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Request access to the following domains: coursera.org, crunchyroll.com, hdrezka.ag, hdrezka.cm, hdrezka.co, hdrezka.kim, hdrezka.me, hdrezka.sh, rezka.ag, rezkery.com, rezkify.com, anix.pm, dokicloud.one, echovideo.ru, echovideo.to, megacloud.blog, megacloud.club, megacloud.tv, megaplay.buzz, rapid-cloud.co, weneverbeenfree.com, 9anime.to, 9animetv.to, aniwatch.to, aniwave.ru, aniwave.to, aniwaves.ru, hianime.sk, hianime.to, hianimetv.cfd, hianimez.to, jut.su, netflix.com, localhost, youtube.com, lexispark.app, translated.net, lostproject.club, lostproject.one, 2cdns.com
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Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

LexiSpark: Science-Backed Video Learning is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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