Flying Comment Translate AI

Tracking since Apr 4, 2026.

Changelog

• Jun 8, 2026
  description

  Flying Comment Translate AI is a Chrome extension that translates YouTube Live and Twitch chats in real-time using Google's latest AI, "Gemini", and displays them as flowing comments floating directly across the video screen.
  
  Even if you don't need the translation feature, you can use it completely for free simply as a stylish flowing comment display.
  
  * This extension operates extremely efficiently. It randomly positions comments directly within your browser without relying on any external positioning servers (overlapping is not restricted).
  * The translation feature optimizes your API requests by gathering comments over a specified time interval and translating them all in one batch.
  
  [What's New in v1.4.2] 
  💬 "Chat Post Translator" Now Supports YouTube! The floating translator panel for your chat messages, introduced in the previous update, is now fully supported on both YouTube Live and archived videos.
  
  ⚙️ Usability Improvements & Bug Fixes
  Added a quick ON/OFF toggle for the "Chat Post Translator" directly in the extension's popup menu for easier access.
  Fixed a bug where settings like "Show Translated Comments Only" did not sync immediately between the popup menu and the advanced options page.
  
  💡 How to Hide the Panel The Chat Post Translator is enabled by default. If you prefer not to see it, you can hide it by:
  ・Clicking the "-" button on the top right of the panel to minimize it.
  ・Clicking the extension icon and turning OFF the "Chat Post Translator" toggle in the popup menu.
  ・Turning it OFF in the advanced settings page.
  
  🚀 Key Features
  ■ Flowing Comment Display
  Enjoy the stream and the chat simultaneously with zero eye movement on both YouTube and Twitch. You can freely customize the font size, opacity, and flow speed.
  
  ■ AI Translation (Internet Slang Supported)
  Powered by Google's latest AI, "Gemini 2.5 Flash-Lite". It naturally translates internet slang and gamer terms based on context (e.g., properly translating terms like "lol" or "POG" into natural equivalents in your target language).
  
  ■ Summarization Feature (Beta)
  When the chat is moving too fast with massive amounts of comments, the AI will automatically summarize the content and display it for you.
  
  💳 How to Use (Choose from 2 Options)
  ① Patreon Membership (Recommended / Best for Beginners)
  No need to acquire or configure complicated API keys. Simply log in with your Patreon account and you are ready to go!
  
  | Plan     | Price/Mo | Limit/Mo      | Est. Translation Time |
  |----------|----------|---------------|-----------------------|
  | Free     | $0       | 240 reqs      | Approx. 20 mins       |
  | Starter  | $5       | 12,000 reqs   | Approx. 17 hours      |
  | Standard | $10      | 26,000 reqs   | Approx. 36 hours      |
  | Pro      | $20      | 64,000 reqs   | Approx. 89 hours      |
  | Ultra    | $35      | 140,000 reqs  | Approx. 194 hours     |
  
  * Note: Enabling the summarization feature consumes more API requests, which may reduce your estimated viewing time by 10-20%.
  * Note: If you change your plan, simply log out and log back into the extension to reflect the changes immediately.
  
  ② Use Your Own API Key (Advanced)
  You can also use this extension by acquiring your own API key directly from Google AI Studio (aistudio.google.com).
  
  ⚠️ WARNING (When using an API Key): AI Models other than 'Gemini 2.5 Flash-Lite' (Recommended) are extremely expensive. Using standard Flash or Pro models carries a high risk of incurring charges of tens to hundreds of dollars in a very short time. Use at your own risk.
  
  ⚙️ Customization Settings
  You can easily tweak the settings to your liking via the extension popup or the options page:
  ・API Request Interval: Adjust the translation frequency between 1 to 10 seconds.
  ・Cost Management: Save API usage by setting "Minimum/Maximum character length" for comments to be translated.
  ・Display Settings: Font size, opacity, flow speed, original text color, and translated text color.
  ・Live Preview: Instantly see how your setting changes will look on screen.
  
  ⚠️ Disclaimer
  ・This extension is an unofficial tool developed by an individual. It is not affiliated with, nor endorsed by, YouTube or Twitch.
  ・Due to the nature of AI models, we cannot 100% guarantee the accuracy of translations.
  ・When using your own API key: NEVER share your key with anyone (it is highly sensitive information, equivalent to a credit card).
  ・Temporary delays or limits may occur depending on API usage quotas or Google Cloud's server constraints.
  
  【Important Notice Regarding API Request Limits】
  This service utilizes Google's latest AI via API. While we strive to provide a stable service, please be aware of the following:
  * Temporary Restrictions: Due to a rapid increase in users or concentrated access during peak times, we may reach the AI model's "maximum requests per minute" limit.
  * Behavior During Restrictions: If the limit is reached, translation/summarization processes may be temporarily skipped, resulting in comments being displayed in their original language or experiencing a slight delay.
  * Resolution: When limits are reached, we promptly apply to Google for a quota increase; however, the review and reflection process may take several days to weeks.
  * Liability: We cannot offer refunds for temporary degradation of service quality caused by such infrastructure constraints.
  
  🔒 Data Handling & Privacy
  【When Using Patreon Membership】
  Translation requests are routed through the developer's Cloudflare Worker. Only your session token and usage count are stored for plan management purposes. We do NOT store any of your personal information.
  
  【When Using Your Own API Key】
  All data is processed directly between your browser and Google's servers. Your API key and chat data are NEVER sent to or stored by the developer or any third parties.
  
  We will continue to improve this extension based on your feedback!

  Flying Comment Translate AI is a Chrome extension that translates YouTube Live and Twitch chats in real-time using Google's latest AI, "Gemini", and displays them as flowing comments floating directly across the video screen.
  
  Even if you don't need the translation feature, you can use it completely for free simply as a stylish flowing comment display.
  
  * This extension operates extremely efficiently. It randomly positions comments directly within your browser without relying on any external positioning servers (overlapping is not restricted).
  * The translation feature optimizes your API requests by gathering comments over a specified time interval and translating them all in one batch.
  
  [What's New in v1.4.3] 
  💬 Minor link fix
  
  ⚙️ Usability Improvements & Bug Fixes
  Added a quick ON/OFF toggle for the "Chat Post Translator" directly in the extension's popup menu for easier access.
  Fixed a bug where settings like "Show Translated Comments Only" did not sync immediately between the popup menu and the advanced options page.
  
  💡 How to Hide the Panel The Chat Post Translator is enabled by default. If you prefer not to see it, you can hide it by:
  ・Clicking the "-" button on the top right of the panel to minimize it.
  ・Clicking the extension icon and turning OFF the "Chat Post Translator" toggle in the popup menu.
  ・Turning it OFF in the advanced settings page.
  
  🚀 Key Features
  ■ Flowing Comment Display
  Enjoy the stream and the chat simultaneously with zero eye movement on both YouTube and Twitch. You can freely customize the font size, opacity, and flow speed.
  
  ■ AI Translation (Internet Slang Supported)
  Powered by Google's latest AI, "Gemini 2.5 Flash-Lite". It naturally translates internet slang and gamer terms based on context (e.g., properly translating terms like "lol" or "POG" into natural equivalents in your target language).
  
  ■ Summarization Feature (Beta)
  When the chat is moving too fast with massive amounts of comments, the AI will automatically summarize the content and display it for you.
  
  💳 How to Use (Choose from 2 Options)
  ① Patreon Membership (Recommended / Best for Beginners)
  No need to acquire or configure complicated API keys. Simply log in with your Patreon account and you are ready to go!
  
  | Plan     | Price/Mo | Limit/Mo      | Est. Translation Time |
  |----------|----------|---------------|-----------------------|
  | Free     | $0       | 240 reqs      | Approx. 20 mins       |
  | Starter  | $5       | 12,000 reqs   | Approx. 17 hours      |
  | Standard | $10      | 26,000 reqs   | Approx. 36 hours      |
  | Pro      | $20      | 64,000 reqs   | Approx. 89 hours      |
  | Ultra    | $35      | 140,000 reqs  | Approx. 194 hours     |
  
  * Note: Enabling the summarization feature consumes more API requests, which may reduce your estimated viewing time by 10-20%.
  * Note: If you change your plan, simply log out and log back into the extension to reflect the changes immediately.
  
  ② Use Your Own API Key (Advanced)
  You can also use this extension by acquiring your own API key directly from Google AI Studio (aistudio.google.com).
  
  ⚠️ WARNING (When using an API Key): AI Models other than 'Gemini 2.5 Flash-Lite' (Recommended) are extremely expensive. Using standard Flash or Pro models carries a high risk of incurring charges of tens to hundreds of dollars in a very short time. Use at your own risk.
  
  ⚙️ Customization Settings
  You can easily tweak the settings to your liking via the extension popup or the options page:
  ・API Request Interval: Adjust the translation frequency between 1 to 10 seconds.
  ・Cost Management: Save API usage by setting "Minimum/Maximum character length" for comments to be translated.
  ・Display Settings: Font size, opacity, flow speed, original text color, and translated text color.
  ・Live Preview: Instantly see how your setting changes will look on screen.
  
  ⚠️ Disclaimer
  ・This extension is an unofficial tool developed by an individual. It is not affiliated with, nor endorsed by, YouTube or Twitch.
  ・Due to the nature of AI models, we cannot 100% guarantee the accuracy of translations.
  ・When using your own API key: NEVER share your key with anyone (it is highly sensitive information, equivalent to a credit card).
  ・Temporary delays or limits may occur depending on API usage quotas or Google Cloud's server constraints.
  
  【Important Notice Regarding API Request Limits】
  This service utilizes Google's latest AI via API. While we strive to provide a stable service, please be aware of the following:
  * Temporary Restrictions: Due to a rapid increase in users or concentrated access during peak times, we may reach the AI model's "maximum requests per minute" limit.
  * Behavior During Restrictions: If the limit is reached, translation/summarization processes may be temporarily skipped, resulting in comments being displayed in their original language or experiencing a slight delay.
  * Resolution: When limits are reached, we promptly apply to Google for a quota increase; however, the review and reflection process may take several days to weeks.
  * Liability: We cannot offer refunds for temporary degradation of service quality caused by such infrastructure constraints.
  
  🔒 Data Handling & Privacy
  【When Using Patreon Membership】
  Translation requests are routed through the developer's Cloudflare Worker. Only your session token and usage count are stored for plan management purposes. We do NOT store any of your personal information.
  
  【When Using Your Own API Key】
  All data is processed directly between your browser and Google's servers. Your API key and chat data are NEVER sent to or stored by the developer or any third parties.
  
  We will continue to improve this extension based on your feedback!

• May 13, 2026
  description

  Flying Comment Translate AI is a Chrome extension that translates YouTube Live and Twitch chats in real-time using Google's latest AI, "Gemini", and displays them as flowing comments floating directly across the video screen.
  
  Even if you don't need the translation feature, you can use it completely for free simply as a stylish flowing comment display.
  
  * This extension operates extremely efficiently. It randomly positions comments directly within your browser without relying on any external positioning servers (overlapping is not restricted).
  * The translation feature optimizes your API requests by gathering comments over a specified time interval and translating them all in one batch.
  
  [What's New in v1.4.1]
  💬 New "Chat Post Translator" panel for Twitch!
  A floating panel has been added that lets you translate any text you want to post to chat, right on the spot.
  Simply copy the translated result to your clipboard with one click and paste it into the chat box — multilingual posting made easy!
  ✨ Key Changes
  · Added a floating translation panel for Twitch to translate text before posting
  · Patreon members: translations are processed via our server (counts toward monthly usage)
  · Non-members: translations use your own Gemini API key
  🔧 Bug Fixes
  · Fixed an issue where some UI elements displayed in Japanese regardless of Chrome's language setting
  
  🚀 Key Features
  ■ Flowing Comment Display
  Enjoy the stream and the chat simultaneously with zero eye movement on both YouTube and Twitch. You can freely customize the font size, opacity, and flow speed.
  
  ■ AI Translation (Internet Slang Supported)
  Powered by Google's latest AI, "Gemini 2.5 Flash-Lite". It naturally translates internet slang and gamer terms based on context (e.g., properly translating terms like "lol" or "POG" into natural equivalents in your target language).
  
  ■ Summarization Feature (Beta)
  When the chat is moving too fast with massive amounts of comments, the AI will automatically summarize the content and display it for you.
  
  💳 How to Use (Choose from 2 Options)
  ① Patreon Membership (Recommended / Best for Beginners)
  No need to acquire or configure complicated API keys. Simply log in with your Patreon account and you are ready to go!
  
  | Plan     | Price/Mo | Limit/Mo      | Est. Translation Time |
  |----------|----------|---------------|-----------------------|
  | Free     | $0       | 240 reqs      | Approx. 20 mins       |
  | Starter  | $5       | 12,000 reqs   | Approx. 17 hours      |
  | Standard | $10      | 26,000 reqs   | Approx. 36 hours      |
  | Pro      | $20      | 64,000 reqs   | Approx. 89 hours      |
  | Ultra    | $35      | 140,000 reqs  | Approx. 194 hours     |
  
  * Note: Enabling the summarization feature consumes more API requests, which may reduce your estimated viewing time by 10-20%.
  * Note: If you change your plan, simply log out and log back into the extension to reflect the changes immediately.
  
  ② Use Your Own API Key (Advanced)
  You can also use this extension by acquiring your own API key directly from Google AI Studio (aistudio.google.com).
  
  ⚠️ WARNING (When using an API Key): AI Models other than 'Gemini 2.5 Flash-Lite' (Recommended) are extremely expensive. Using standard Flash or Pro models carries a high risk of incurring charges of tens to hundreds of dollars in a very short time. Use at your own risk.
  
  ⚙️ Customization Settings
  You can easily tweak the settings to your liking via the extension popup or the options page:
  ・API Request Interval: Adjust the translation frequency between 1 to 10 seconds.
  ・Cost Management: Save API usage by setting "Minimum/Maximum character length" for comments to be translated.
  ・Display Settings: Font size, opacity, flow speed, original text color, and translated text color.
  ・Live Preview: Instantly see how your setting changes will look on screen.
  
  ⚠️ Disclaimer
  ・This extension is an unofficial tool developed by an individual. It is not affiliated with, nor endorsed by, YouTube or Twitch.
  ・Due to the nature of AI models, we cannot 100% guarantee the accuracy of translations.
  ・When using your own API key: NEVER share your key with anyone (it is highly sensitive information, equivalent to a credit card).
  ・Temporary delays or limits may occur depending on API usage quotas or Google Cloud's server constraints.
  
  【Important Notice Regarding API Request Limits】
  This service utilizes Google's latest AI via API. While we strive to provide a stable service, please be aware of the following:
  * Temporary Restrictions: Due to a rapid increase in users or concentrated access during peak times, we may reach the AI model's "maximum requests per minute" limit.
  * Behavior During Restrictions: If the limit is reached, translation/summarization processes may be temporarily skipped, resulting in comments being displayed in their original language or experiencing a slight delay.
  * Resolution: When limits are reached, we promptly apply to Google for a quota increase; however, the review and reflection process may take several days to weeks.
  * Liability: We cannot offer refunds for temporary degradation of service quality caused by such infrastructure constraints.
  
  🔒 Data Handling & Privacy
  【When Using Patreon Membership】
  Translation requests are routed through the developer's Cloudflare Worker. Only your session token and usage count are stored for plan management purposes. We do NOT store any of your personal information.
  
  【When Using Your Own API Key】
  All data is processed directly between your browser and Google's servers. Your API key and chat data are NEVER sent to or stored by the developer or any third parties.
  
  We will continue to improve this extension based on your feedback!

  Flying Comment Translate AI is a Chrome extension that translates YouTube Live and Twitch chats in real-time using Google's latest AI, "Gemini", and displays them as flowing comments floating directly across the video screen.
  
  Even if you don't need the translation feature, you can use it completely for free simply as a stylish flowing comment display.
  
  * This extension operates extremely efficiently. It randomly positions comments directly within your browser without relying on any external positioning servers (overlapping is not restricted).
  * The translation feature optimizes your API requests by gathering comments over a specified time interval and translating them all in one batch.
  
  [What's New in v1.4.2] 
  💬 "Chat Post Translator" Now Supports YouTube! The floating translator panel for your chat messages, introduced in the previous update, is now fully supported on both YouTube Live and archived videos.
  
  ⚙️ Usability Improvements & Bug Fixes
  Added a quick ON/OFF toggle for the "Chat Post Translator" directly in the extension's popup menu for easier access.
  Fixed a bug where settings like "Show Translated Comments Only" did not sync immediately between the popup menu and the advanced options page.
  
  💡 How to Hide the Panel The Chat Post Translator is enabled by default. If you prefer not to see it, you can hide it by:
  ・Clicking the "-" button on the top right of the panel to minimize it.
  ・Clicking the extension icon and turning OFF the "Chat Post Translator" toggle in the popup menu.
  ・Turning it OFF in the advanced settings page.
  
  🚀 Key Features
  ■ Flowing Comment Display
  Enjoy the stream and the chat simultaneously with zero eye movement on both YouTube and Twitch. You can freely customize the font size, opacity, and flow speed.
  
  ■ AI Translation (Internet Slang Supported)
  Powered by Google's latest AI, "Gemini 2.5 Flash-Lite". It naturally translates internet slang and gamer terms based on context (e.g., properly translating terms like "lol" or "POG" into natural equivalents in your target language).
  
  ■ Summarization Feature (Beta)
  When the chat is moving too fast with massive amounts of comments, the AI will automatically summarize the content and display it for you.
  
  💳 How to Use (Choose from 2 Options)
  ① Patreon Membership (Recommended / Best for Beginners)
  No need to acquire or configure complicated API keys. Simply log in with your Patreon account and you are ready to go!
  
  | Plan     | Price/Mo | Limit/Mo      | Est. Translation Time |
  |----------|----------|---------------|-----------------------|
  | Free     | $0       | 240 reqs      | Approx. 20 mins       |
  | Starter  | $5       | 12,000 reqs   | Approx. 17 hours      |
  | Standard | $10      | 26,000 reqs   | Approx. 36 hours      |
  | Pro      | $20      | 64,000 reqs   | Approx. 89 hours      |
  | Ultra    | $35      | 140,000 reqs  | Approx. 194 hours     |
  
  * Note: Enabling the summarization feature consumes more API requests, which may reduce your estimated viewing time by 10-20%.
  * Note: If you change your plan, simply log out and log back into the extension to reflect the changes immediately.
  
  ② Use Your Own API Key (Advanced)
  You can also use this extension by acquiring your own API key directly from Google AI Studio (aistudio.google.com).
  
  ⚠️ WARNING (When using an API Key): AI Models other than 'Gemini 2.5 Flash-Lite' (Recommended) are extremely expensive. Using standard Flash or Pro models carries a high risk of incurring charges of tens to hundreds of dollars in a very short time. Use at your own risk.
  
  ⚙️ Customization Settings
  You can easily tweak the settings to your liking via the extension popup or the options page:
  ・API Request Interval: Adjust the translation frequency between 1 to 10 seconds.
  ・Cost Management: Save API usage by setting "Minimum/Maximum character length" for comments to be translated.
  ・Display Settings: Font size, opacity, flow speed, original text color, and translated text color.
  ・Live Preview: Instantly see how your setting changes will look on screen.
  
  ⚠️ Disclaimer
  ・This extension is an unofficial tool developed by an individual. It is not affiliated with, nor endorsed by, YouTube or Twitch.
  ・Due to the nature of AI models, we cannot 100% guarantee the accuracy of translations.
  ・When using your own API key: NEVER share your key with anyone (it is highly sensitive information, equivalent to a credit card).
  ・Temporary delays or limits may occur depending on API usage quotas or Google Cloud's server constraints.
  
  【Important Notice Regarding API Request Limits】
  This service utilizes Google's latest AI via API. While we strive to provide a stable service, please be aware of the following:
  * Temporary Restrictions: Due to a rapid increase in users or concentrated access during peak times, we may reach the AI model's "maximum requests per minute" limit.
  * Behavior During Restrictions: If the limit is reached, translation/summarization processes may be temporarily skipped, resulting in comments being displayed in their original language or experiencing a slight delay.
  * Resolution: When limits are reached, we promptly apply to Google for a quota increase; however, the review and reflection process may take several days to weeks.
  * Liability: We cannot offer refunds for temporary degradation of service quality caused by such infrastructure constraints.
  
  🔒 Data Handling & Privacy
  【When Using Patreon Membership】
  Translation requests are routed through the developer's Cloudflare Worker. Only your session token and usage count are stored for plan management purposes. We do NOT store any of your personal information.
  
  【When Using Your Own API Key】
  All data is processed directly between your browser and Google's servers. Your API key and chat data are NEVER sent to or stored by the developer or any third parties.
  
  We will continue to improve this extension based on your feedback!

• May 2, 2026
  description

  Flying Comment Translate AI is a Chrome extension that translates YouTube Live and Twitch chats in real-time using Google's latest AI, "Gemini", and displays them as flowing comments floating directly across the video screen.
  
  Even if you don't need the translation feature, you can use it completely for free simply as a stylish flowing comment display.
  
  * This extension operates extremely efficiently. It randomly positions comments directly within your browser without relying on any external positioning servers (overlapping is not restricted).
  * The translation feature optimizes your API requests by gathering comments over a specified time interval and translating them all in one batch.
  
  【What's New in this Update】
  🎉 NEW: Added support for chat translation and flowing comments on Twitch live streams!
  
  🚀 Key Features
  ■ Flowing Comment Display
  Enjoy the stream and the chat simultaneously with zero eye movement on both YouTube and Twitch. You can freely customize the font size, opacity, and flow speed.
  
  ■ AI Translation (Internet Slang Supported)
  Powered by Google's latest AI, "Gemini 2.5 Flash-Lite". It naturally translates internet slang and gamer terms based on context (e.g., properly translating terms like "lol" or "POG" into natural equivalents in your target language).
  
  ■ Summarization Feature (Beta)
  When the chat is moving too fast with massive amounts of comments, the AI will automatically summarize the content and display it for you.
  
  💳 How to Use (Choose from 2 Options)
  ① Patreon Membership (Recommended / Best for Beginners)
  No need to acquire or configure complicated API keys. Simply log in with your Patreon account and you are ready to go!
  
  | Plan     | Price/Mo | Limit/Mo      | Est. Translation Time |
  |----------|----------|---------------|-----------------------|
  | Free     | $0       | 240 reqs      | Approx. 20 mins       |
  | Starter  | $5       | 12,000 reqs   | Approx. 17 hours      |
  | Standard | $10      | 26,000 reqs   | Approx. 36 hours      |
  | Pro      | $20      | 64,000 reqs   | Approx. 89 hours      |
  | Ultra    | $35      | 140,000 reqs  | Approx. 194 hours     |
  
  * Note: Enabling the summarization feature consumes more API requests, which may reduce your estimated viewing time by 10-20%.
  * Note: If you change your plan, simply log out and log back into the extension to reflect the changes immediately.
  
  ② Use Your Own API Key (Advanced)
  You can also use this extension by acquiring your own API key directly from Google AI Studio (aistudio.google.com).
  
  ⚠️ WARNING (When using an API Key): AI Models other than 'Gemini 2.5 Flash-Lite' (Recommended) are extremely expensive. Using standard Flash or Pro models carries a high risk of incurring charges of tens to hundreds of dollars in a very short time. Use at your own risk.
  
  ⚙️ Customization Settings
  You can easily tweak the settings to your liking via the extension popup or the options page:
  ・API Request Interval: Adjust the translation frequency between 1 to 10 seconds.
  ・Cost Management: Save API usage by setting "Minimum/Maximum character length" for comments to be translated.
  ・Display Settings: Font size, opacity, flow speed, original text color, and translated text color.
  ・Live Preview: Instantly see how your setting changes will look on screen.
  
  ⚠️ Disclaimer
  ・This extension is an unofficial tool developed by an individual. It is not affiliated with, nor endorsed by, YouTube or Twitch.
  ・Due to the nature of AI models, we cannot 100% guarantee the accuracy of translations.
  ・When using your own API key: NEVER share your key with anyone (it is highly sensitive information, equivalent to a credit card).
  ・Temporary delays or limits may occur depending on API usage quotas or Google Cloud's server constraints.
  
  【Important Notice Regarding API Request Limits】
  This service utilizes Google's latest AI via API. While we strive to provide a stable service, please be aware of the following:
  * Temporary Restrictions: Due to a rapid increase in users or concentrated access during peak times, we may reach the AI model's "maximum requests per minute" limit.
  * Behavior During Restrictions: If the limit is reached, translation/summarization processes may be temporarily skipped, resulting in comments being displayed in their original language or experiencing a slight delay.
  * Resolution: When limits are reached, we promptly apply to Google for a quota increase; however, the review and reflection process may take several days to weeks.
  * Liability: We cannot offer refunds for temporary degradation of service quality caused by such infrastructure constraints.
  
  🔒 Data Handling & Privacy
  【When Using Patreon Membership】
  Translation requests are routed through the developer's Cloudflare Worker. Only your session token and usage count are stored for plan management purposes. We do NOT store any of your personal information.
  
  【When Using Your Own API Key】
  All data is processed directly between your browser and Google's servers. Your API key and chat data are NEVER sent to or stored by the developer or any third parties.
  
  We will continue to improve this extension based on your feedback!

  Flying Comment Translate AI is a Chrome extension that translates YouTube Live and Twitch chats in real-time using Google's latest AI, "Gemini", and displays them as flowing comments floating directly across the video screen.
  
  Even if you don't need the translation feature, you can use it completely for free simply as a stylish flowing comment display.
  
  * This extension operates extremely efficiently. It randomly positions comments directly within your browser without relying on any external positioning servers (overlapping is not restricted).
  * The translation feature optimizes your API requests by gathering comments over a specified time interval and translating them all in one batch.
  
  [What's New in v1.4.1]
  💬 New "Chat Post Translator" panel for Twitch!
  A floating panel has been added that lets you translate any text you want to post to chat, right on the spot.
  Simply copy the translated result to your clipboard with one click and paste it into the chat box — multilingual posting made easy!
  ✨ Key Changes
  · Added a floating translation panel for Twitch to translate text before posting
  · Patreon members: translations are processed via our server (counts toward monthly usage)
  · Non-members: translations use your own Gemini API key
  🔧 Bug Fixes
  · Fixed an issue where some UI elements displayed in Japanese regardless of Chrome's language setting
  
  🚀 Key Features
  ■ Flowing Comment Display
  Enjoy the stream and the chat simultaneously with zero eye movement on both YouTube and Twitch. You can freely customize the font size, opacity, and flow speed.
  
  ■ AI Translation (Internet Slang Supported)
  Powered by Google's latest AI, "Gemini 2.5 Flash-Lite". It naturally translates internet slang and gamer terms based on context (e.g., properly translating terms like "lol" or "POG" into natural equivalents in your target language).
  
  ■ Summarization Feature (Beta)
  When the chat is moving too fast with massive amounts of comments, the AI will automatically summarize the content and display it for you.
  
  💳 How to Use (Choose from 2 Options)
  ① Patreon Membership (Recommended / Best for Beginners)
  No need to acquire or configure complicated API keys. Simply log in with your Patreon account and you are ready to go!
  
  | Plan     | Price/Mo | Limit/Mo      | Est. Translation Time |
  |----------|----------|---------------|-----------------------|
  | Free     | $0       | 240 reqs      | Approx. 20 mins       |
  | Starter  | $5       | 12,000 reqs   | Approx. 17 hours      |
  | Standard | $10      | 26,000 reqs   | Approx. 36 hours      |
  | Pro      | $20      | 64,000 reqs   | Approx. 89 hours      |
  | Ultra    | $35      | 140,000 reqs  | Approx. 194 hours     |
  
  * Note: Enabling the summarization feature consumes more API requests, which may reduce your estimated viewing time by 10-20%.
  * Note: If you change your plan, simply log out and log back into the extension to reflect the changes immediately.
  
  ② Use Your Own API Key (Advanced)
  You can also use this extension by acquiring your own API key directly from Google AI Studio (aistudio.google.com).
  
  ⚠️ WARNING (When using an API Key): AI Models other than 'Gemini 2.5 Flash-Lite' (Recommended) are extremely expensive. Using standard Flash or Pro models carries a high risk of incurring charges of tens to hundreds of dollars in a very short time. Use at your own risk.
  
  ⚙️ Customization Settings
  You can easily tweak the settings to your liking via the extension popup or the options page:
  ・API Request Interval: Adjust the translation frequency between 1 to 10 seconds.
  ・Cost Management: Save API usage by setting "Minimum/Maximum character length" for comments to be translated.
  ・Display Settings: Font size, opacity, flow speed, original text color, and translated text color.
  ・Live Preview: Instantly see how your setting changes will look on screen.
  
  ⚠️ Disclaimer
  ・This extension is an unofficial tool developed by an individual. It is not affiliated with, nor endorsed by, YouTube or Twitch.
  ・Due to the nature of AI models, we cannot 100% guarantee the accuracy of translations.
  ・When using your own API key: NEVER share your key with anyone (it is highly sensitive information, equivalent to a credit card).
  ・Temporary delays or limits may occur depending on API usage quotas or Google Cloud's server constraints.
  
  【Important Notice Regarding API Request Limits】
  This service utilizes Google's latest AI via API. While we strive to provide a stable service, please be aware of the following:
  * Temporary Restrictions: Due to a rapid increase in users or concentrated access during peak times, we may reach the AI model's "maximum requests per minute" limit.
  * Behavior During Restrictions: If the limit is reached, translation/summarization processes may be temporarily skipped, resulting in comments being displayed in their original language or experiencing a slight delay.
  * Resolution: When limits are reached, we promptly apply to Google for a quota increase; however, the review and reflection process may take several days to weeks.
  * Liability: We cannot offer refunds for temporary degradation of service quality caused by such infrastructure constraints.
  
  🔒 Data Handling & Privacy
  【When Using Patreon Membership】
  Translation requests are routed through the developer's Cloudflare Worker. Only your session token and usage count are stored for plan management purposes. We do NOT store any of your personal information.
  
  【When Using Your Own API Key】
  All data is processed directly between your browser and Google's servers. Your API key and chat data are NEVER sent to or stored by the developer or any third parties.
  
  We will continue to improve this extension based on your feedback!

• Apr 18, 2026
  description

  Flying Comment Translate AI is a Chrome extension that translates YouTube Live chat in real-time using Google Gemini AI and displays them as flowing comment overlays on the video screen.
  
  It also works as a simple flowing comment display even without the translation feature.
  
  This extension sends chat comments to Google's servers for AI translation and renders them directly in your browser — no comment server is used, and comments are placed at random positions on screen.
  
  Comments are batched and translated together — up to 25 comments are collected over 5 seconds, then translated all at once for efficiency.
  
  Changes:
  Updated settings page UI
  Added toggle for "Show Translated Comments Only" mode
  
  🚀 Key Features
  ■ Flowing Comment Overlay
  Enjoy streams and comments simultaneously without moving your eyes. Customize font size, opacity, and flow speed with simple controls.
  
  ■ AI Translation (Slang-Aware)
  Powered by Gemini 2.5 Flash-Lite / Flash. Translates internet slang and casual expressions naturally — e.g., "草" → "lol", "ニキ" → "bro".
  
  ■ Speed-Based Summary
  Automatically summarizes when chat gets too fast, so you never miss key reactions.
  
  
  💳 How to Use (2 Options)
  ① Patreon Membership (Recommended)
  No API key setup required. Just log in with Patreon.
  
  | Plan    | Price  | Limit/month   | Est. Viewing Time |
  |---------|--------|---------------|-------------------|
  | Free    | $0     | 240 reqs      | ~20 min           |
  | Starter | $5     | 12,000 reqs   | ~17 hrs           |
  | Standard| $10    | 26,000 reqs   | ~36 hrs           |
  | Pro     | $20    | 64,000 reqs   | ~89 hrs           |
  | Ultra   | $35    | 140,000 reqs  | ~194 hrs          |
  
  * Enabling summary may reduce viewing time by ~10-20%.
  * If you upgrade your plan, please log out and log in again to sync.
  
  ② Use Your Own API Key
  Get a free API key from Google AI Studio (aistudio.google.com).
  
  ⚠️ IMPORTANT: We strongly recommend Gemini 2.5 Flash-Lite.
  Flash and Pro models are expensive and can generate charges of hundreds of dollars quickly.
  
  
  ⚙️ Settings
  Configure via the extension popup button or the Advanced Settings page.
  - API Request Interval: Adjust translation frequency (1s - 10s slider)
  - Cost Saver: Set min/max comment length to optimize API usage
  - Display: Font size, opacity, flow speed, text/translation colors
  - Preview: See your display settings in real-time
  
  
  ⚠️ Disclaimer
  - This extension is an unofficial tool developed by an individual
  - AI translation accuracy is not guaranteed
  - When using your own API key: treat it like a credit card — never share it publicly
  - API usage may be subject to Google Cloud quota limits
  
  📢 Important Notice Regarding API Request Limits
  This service provides translations via Google's latest AI (Gemini 2.5 Flash-Lite) through API.
  We strive to deliver a stable service, but please be aware of the following:
  
  Possible Temporary Limits: A rapid increase in members or concentrated access during certain time periods may cause the AI model's "maximum requests per minute" quota to be reached.
  
  Behavior During Limits: When the quota is reached, translation and summarization may be temporarily skipped — comments will appear in their original language, or display may be delayed.
  
  Resolution: When quota limits are reached, we will promptly request a quota increase from Google. However, Google's review and implementation may take several days to weeks.
  
  Refund Policy: Temporary service quality reductions caused by infrastructure-level constraints as described above are not eligible for refunds.
  
  
  
  🔒 Data Handling
  [When using Patreon Membership]
  Translation requests are processed through the developer's Cloudflare Worker proxy. Session token and usage count are stored for plan management. No personal information is stored.
  
  [When using your own API Key]
  All data is processed directly between your browser and Google's servers. Your API key and chat data are NEVER sent to the developer or any third party.
  
  We welcome your feedback to continue improving this extension!

  Flying Comment Translate AI is a Chrome extension that translates YouTube Live and Twitch chats in real-time using Google's latest AI, "Gemini", and displays them as flowing comments floating directly across the video screen.
  
  Even if you don't need the translation feature, you can use it completely for free simply as a stylish flowing comment display.
  
  * This extension operates extremely efficiently. It randomly positions comments directly within your browser without relying on any external positioning servers (overlapping is not restricted).
  * The translation feature optimizes your API requests by gathering comments over a specified time interval and translating them all in one batch.
  
  【What's New in this Update】
  🎉 NEW: Added support for chat translation and flowing comments on Twitch live streams!
  
  🚀 Key Features
  ■ Flowing Comment Display
  Enjoy the stream and the chat simultaneously with zero eye movement on both YouTube and Twitch. You can freely customize the font size, opacity, and flow speed.
  
  ■ AI Translation (Internet Slang Supported)
  Powered by Google's latest AI, "Gemini 2.5 Flash-Lite". It naturally translates internet slang and gamer terms based on context (e.g., properly translating terms like "lol" or "POG" into natural equivalents in your target language).
  
  ■ Summarization Feature (Beta)
  When the chat is moving too fast with massive amounts of comments, the AI will automatically summarize the content and display it for you.
  
  💳 How to Use (Choose from 2 Options)
  ① Patreon Membership (Recommended / Best for Beginners)
  No need to acquire or configure complicated API keys. Simply log in with your Patreon account and you are ready to go!
  
  | Plan     | Price/Mo | Limit/Mo      | Est. Translation Time |
  |----------|----------|---------------|-----------------------|
  | Free     | $0       | 240 reqs      | Approx. 20 mins       |
  | Starter  | $5       | 12,000 reqs   | Approx. 17 hours      |
  | Standard | $10      | 26,000 reqs   | Approx. 36 hours      |
  | Pro      | $20      | 64,000 reqs   | Approx. 89 hours      |
  | Ultra    | $35      | 140,000 reqs  | Approx. 194 hours     |
  
  * Note: Enabling the summarization feature consumes more API requests, which may reduce your estimated viewing time by 10-20%.
  * Note: If you change your plan, simply log out and log back into the extension to reflect the changes immediately.
  
  ② Use Your Own API Key (Advanced)
  You can also use this extension by acquiring your own API key directly from Google AI Studio (aistudio.google.com).
  
  ⚠️ WARNING (When using an API Key): AI Models other than 'Gemini 2.5 Flash-Lite' (Recommended) are extremely expensive. Using standard Flash or Pro models carries a high risk of incurring charges of tens to hundreds of dollars in a very short time. Use at your own risk.
  
  ⚙️ Customization Settings
  You can easily tweak the settings to your liking via the extension popup or the options page:
  ・API Request Interval: Adjust the translation frequency between 1 to 10 seconds.
  ・Cost Management: Save API usage by setting "Minimum/Maximum character length" for comments to be translated.
  ・Display Settings: Font size, opacity, flow speed, original text color, and translated text color.
  ・Live Preview: Instantly see how your setting changes will look on screen.
  
  ⚠️ Disclaimer
  ・This extension is an unofficial tool developed by an individual. It is not affiliated with, nor endorsed by, YouTube or Twitch.
  ・Due to the nature of AI models, we cannot 100% guarantee the accuracy of translations.
  ・When using your own API key: NEVER share your key with anyone (it is highly sensitive information, equivalent to a credit card).
  ・Temporary delays or limits may occur depending on API usage quotas or Google Cloud's server constraints.
  
  【Important Notice Regarding API Request Limits】
  This service utilizes Google's latest AI via API. While we strive to provide a stable service, please be aware of the following:
  * Temporary Restrictions: Due to a rapid increase in users or concentrated access during peak times, we may reach the AI model's "maximum requests per minute" limit.
  * Behavior During Restrictions: If the limit is reached, translation/summarization processes may be temporarily skipped, resulting in comments being displayed in their original language or experiencing a slight delay.
  * Resolution: When limits are reached, we promptly apply to Google for a quota increase; however, the review and reflection process may take several days to weeks.
  * Liability: We cannot offer refunds for temporary degradation of service quality caused by such infrastructure constraints.
  
  🔒 Data Handling & Privacy
  【When Using Patreon Membership】
  Translation requests are routed through the developer's Cloudflare Worker. Only your session token and usage count are stored for plan management purposes. We do NOT store any of your personal information.
  
  【When Using Your Own API Key】
  All data is processed directly between your browser and Google's servers. Your API key and chat data are NEVER sent to or stored by the developer or any third parties.
  
  We will continue to improve this extension based on your feedback!

• Apr 18, 2026
  host_permissions

  *://*.youtube.com/*, https://generativelanguage.googleapis.com/*

  *://*.youtube.com/*, *://*.twitch.tv/*, https://generativelanguage.googleapis.com/*

Permissions & access

Permissions

activeTabstorageidentity

Host access

*://*.youtube.com/*, *://*.twitch.tv/*, https://generativelanguage.googleapis.com/*

Screenshots

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