Is Youtube Sentiment Analysis free?

Yes. It is a free Chrome extension published by a university course team, with no paid plan, subscription, or in-app purchase.

Do I need an account to use it?

No. You install the extension from the Chrome Web Store and it works on YouTube pages without any sign-up or API key.

How does it decide whether comments are positive or negative?

It uses the VADER sentiment model, a rule-based lexicon approach designed for social media text that assigns polarity scores to words, punctuation and emoji.

Which languages does it work well with?

VADER's lexicon is English-centric, so results are most reliable on English comments and may be less accurate on other languages.

Who built the extension?

It was developed as part of a KU Leuven course and is offered by the developer handle thibault.tnt, with the team also running an optional user study on sentiment visualization.

Is my data collected?

The store listing discloses that the extension handles personally identifiable information and website content, and states the data is not sold to third parties.

Youtube Sentiment Analysis 的每月流量與成長趨勢為何？

Youtube Sentiment Analysis 目前每月有 0 次造訪，月流量變化為 +0（成長率 0.0%）。其主要來源市場為全球（佔比 —），其中包含每月 0 次直接造訪與每月 0 次自然搜尋造訪。

Youtube Sentiment Analysis 是免費的嗎？其定價模式為何？

Youtube Sentiment Analysis 採用免費定價模式。Completely free. It is a university course project published on the Chrome Web Store with no paid tiers, subscriptions, or in-app purchases. 支援的帳務與結帳平台包括：未列出。

Youtube Sentiment Analysis — 月造訪量 (0/月)、定價、API 與替代方案

Open AI Tools

Youtube Sentiment Analysis — 月造訪量 (0/月)、定價、API 與替代方案 | Open AI Tools

關於 Youtube Sentiment Analysis

VADER sentiment scoring

Every comment is evaluated with the VADER lexicon model, which is tuned for short, informal social media text and emoji, producing positive, neutral and negative scores.

In-page visualizations

Results are drawn directly inside the YouTube frontend, so the sentiment breakdown sits next to the comments instead of in a separate tab.

One-click analysis

Open a video, trigger the extension, and the comment set is fetched and scored without any setup, login, or API key.

Aggregate audience mood

Rather than reading individual comments, the tool summarizes the comment section into an overall sentiment profile you can scan in seconds.

Research participation hooks

Built-in prompts invite users to join the developers' visualization study by watching sample videos and completing a questionnaire.

Youtube Sentiment Analysis is a free Chrome extension that reads the comments under a YouTube video and visualizes how positive, neutral, or negative the audience really is. It runs the VADER sentiment model locally in your browser and draws the results straight into the YouTube interface, so you can judge a video's reception at a glance instead of scrolling through hundreds of comments.

Youtube Sentiment Analysis 的高效使用情境

Content creator

Check how a new upload landed

Publish a video, then run the extension to see whether early commenters are reacting positively, negatively, or neutrally, and which direction the mood is drifting.

Community manager

Triage a busy comment section

Get a sentiment snapshot of a high-traffic video so you know whether a heated thread needs moderation before you read through it manually.

Researcher or student

Explore sentiment analysis in practice

Use a ready-made VADER pipeline on real YouTube data to demonstrate or study opinion mining and sentiment visualization techniques.

Marketer

Gauge audience response to a campaign

Compare sentiment across sponsored or campaign videos to see which messaging resonated with the audience.

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排名	AI 工具	每月造訪次數	月增幅	直接流量占比	價格	正面對決
●	Youtube Sentiment Analysis	0	—	—	免費	目前產品
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