# Noiz > Chrome extension and mobile apps that summarize YouTube videos into key ideas, timestamped summaries and transcripts. Noiz is an AI summarizer for YouTube videos that works as a Chrome extension and as iOS and Android apps. Noiz is used by opening a video and clicking the Noiz button, which returns key ideas, a timestamped summary or a transcript without any prompt writing, for videos in 41 languages. **Best for:** Students, researchers and creators who watch a lot of long YouTube content and want the main points or a transcript before committing the time. - Official site: https://noiz.io - Listed in: [Summarizer](https://trendhub.net/ai-tools/category/summarizer), [Transcription & Captions](https://trendhub.net/ai-tools/category/transcription-captions) - Last checked: 2026-10-09 (facts taken from noiz.io) - Source page: https://trendhub.net/ai-tools/noiz-ai-youtube-video-summarizer ## Key facts - Platforms: Browser extension, iOS, Android ## What is Noiz? Noiz is an AI video summarizer for YouTube that runs as a Chrome extension, with companion apps for iOS and Android. After installation a Noiz button appears on YouTube pages; clicking it produces a summary of the open video without switching tabs or writing a prompt. Output can take the form of a list of key ideas, a question-and-answer breakdown or a timestamped summary, in brief or detailed versions, and the tool can also turn a video into readable text. Summaries are available for videos in 41 languages and can be translated into more than 40. According to the site's FAQ, Noiz handles recordings as long as 12 hours, works on podcasts hosted on YouTube and accepts any public or unlisted video, including your own uploads. The site additionally lists a weekly top-100 videos feature and a range of free summarizing and writing tools. ## Key features - **One-click summaries**: Adds a button to YouTube that generates a summary of the current video in place. - **Key ideas and Q&A**: Presents the main points as a list or as questions and answers, at a brief or detailed level. - **Timestamped summaries**: Ties each summary section to its position in the video. - **Video to text**: Converts the spoken content of a YouTube video into readable text. - **Summary translation**: Translates a generated summary into one of more than 40 languages. - **Long video support**: Processes videos of up to 12 hours, such as full courses or lengthy podcasts. ## How Noiz works 1. **Install the extension**: Add Noiz to Chrome from the Chrome store. 2. **Open a YouTube video**: Go to YouTube and pick the video you want summarized. 3. **Click the Noiz button**: The summary is generated next to the video within seconds. ## Use cases - **Studying from lectures**: Pull the main points out of a recorded class before revising. - **Screening videos**: Decide whether a long video is worth watching in full. - **Research notes**: Keep summaries as notes for later reference. - **Podcast digests**: Get the gist of a multi-hour podcast episode published on YouTube. - **Content planning**: Extract information from other videos while preparing your own material. ## Things to know - **YouTube content only**: Noiz works on public or unlisted YouTube videos; other video sites are not mentioned. - **Length limit**: The longest video Noiz processes is 12 hours. - **Language coverage**: Summaries are supported for videos in 41 languages. ## FAQs ### What is Noiz? Noiz is an AI tool that summarizes YouTube videos. It is delivered as a Chrome extension with iOS and Android apps. ### What is Noiz used for? Noiz is used to get key ideas, timestamped summaries and transcripts from YouTube videos without watching them in full. ### How do I install Noiz? Noiz is installed from the Chrome store: click Install on the site, then Add to Chrome. ### Does Noiz work on mobile? Yes. Noiz has mobile apps for Android and iOS that generate video summaries on a phone. ### Can Noiz summarize podcasts? Yes, as long as the podcast is on YouTube. Noiz works with any YouTube content, including audio-focused videos. ### Does Noiz work with non-English videos? Yes. Noiz supports YouTube videos in 41 languages, so it is not limited to English. ### What is the longest video Noiz can process? Noiz accepts videos that run for as long as 12 hours. --- Source: https://trendhub.net/ai-tools/noiz-ai-youtube-video-summarizer (trendhub)