Section Repeat
Privacy policy
This policy covers the Section Repeat for YouTube™ Chrome extension ("the extension") and this website, both run by Eunjeong Song ("the developer").
In short
- Everything the extension handles - the YouTube page you are on and the sections you make - stays on your device.
- The developer receives none of this data and does not sell or share it. There is no account, analytics, advertising, tracking, or developer server.
- The developer receives personal data only if you write through the contact form.
Data the extension handles locally
- Web browsing data handled locally: the address and video ID of the YouTube page you are on, used only to link your sections to that video.
- Website content handled locally: the YouTube player's state (time, length, speed, ad and live status) and, when you import chapters, the video's chapter list or description timestamps. Never video or audio content, comments, messages, passwords, cookies, or form entries.
- Your section data: the names, times, and speeds of your sections, and practice settings such as repeat count and rest time.
- Input: key presses and clicks are used only to run the command you give; they are not stored or sent.
What the extension stores
- On your device, until deleted (
chrome.storage.local): your sections, filed per video under a salted SHA-256 hash of the video ID; the random salt made for your Chrome profile; when each video's sections were last edited or opened, used only for the cleanup below; and your first-use tip progress. Practice settings are not saved. - Until Chrome closes (
chrome.storage.session): temporary state, such as the section repeating in each tab with that tab's YouTube address and video ID, and saves waiting for storage space. - Chrome Sync: a salt that older versions kept there is read once for compatibility; nothing is written to it.
- Incognito: sections are kept only while the page is open, and backup and restore are off.
Hashing hides video IDs from casual view, not from someone with access to your Chrome profile or a backup file.
Backup files
Backup and restore, in the toolbar popup, write and read a file on your computer; nothing is uploaded. The file holds your sections and the salt, so anyone with it can restore your library: keep it private. It stays until you delete it.
Network and tracking
The extension sends no section, browsing, player, or input data to the developer or any third party, and it loads no remote code. This website uses no cookies, analytics, or tracking scripts; its host, GitHub Pages, may log visitors' IP addresses for security.
Permissions
- Host access to
youtube.comandyoutube-nocookie.com(HTTPS only): to add section controls to the YouTube player and repeat your sections. storage: to keep the data listed above on your device.alarms: to schedule local storage maintenance and retries of failed saves.
They are not used for advertising, analytics, tracking, or any unrelated purpose.
Chrome Web Store Limited Use
The extension complies with the Chrome Web Store User Data Policy, including the Limited Use requirements. User data is used only for its single purpose - marking, saving, and repeating sections of YouTube videos - and is not sold, transferred for unrelated purposes, used for personalized advertising or to determine creditworthiness, or used to train a general-purpose AI model. No human reads it, because it never leaves your device.
Retention and deletion
- Your data stays on your device until you delete a section or a video's sections in the player panel, or uninstall the extension, which makes Chrome delete its storage.
- A video keeps at most 50 sections; marking more removes the one marked longest ago.
- When the extension's storage is nearly full, it deletes the data of the videos unused the longest, starting with those untouched for 30 days.
Contact form
If you use the contact form, the developer receives what you enter, such as your email address and message, and uses it only to answer you. It is processed for the developer by the form provider Tally BV (Belgium) and stored in the EU. It is deleted once your question is resolved, unless the law requires keeping it.
Your rights
Extension data never leaves your device, so you can view, export, and delete it yourself at any time. For data the developer holds, such as contact messages, you can ask through the contact form to access, correct, or delete it, and you may complain to your data protection authority.
Children
The extension is not directed to children under 13, and the developer does not knowingly receive their personal data.
Changes
Changes are posted here with a new date, and material ones are also noted in the release notes. Your use of YouTube and Chrome is governed by Google's Privacy Policy and the YouTube Terms of Service.