Search every saved video
Find anything in your YouTube library by title, channel, or tag — instantly and locally.
The Private Index
Your library, found.
Right inside YouTube.
Search, tag, and annotate every saved video — from the YouTube tab you already have open. Indexed in your browser, never uploaded.
Free on the Chrome Web Store · Works with Edge, Brave, Opera, Vivaldi
100%browser-side index
0trackers & analytics
7languages supported
1-clickundo on everything
What YASE does
A private layer over your YouTube.
YASE builds a local index of your saved videos — adding the tags, notes, filters, and sorting that YouTube is missing.
Tag what matters
Add tags to any saved video. The reason you kept it is one click away.
Filter down to the one you need
Combine filters by date, channel, and watch status until only the right videos remain.
Sort beyond “Date added”
Order your saved videos by the criteria YouTube never offered.
And much more
✓ Take notes on any saved video
✓ Bulk-edit many videos at once
✓ Auto-sync with your YouTube library
✓ Undo anything with one click
✓ Matches YouTube's light or dark theme
✓ Available in 7 languages
Workflow
Open YouTube. Build the index. Find what you need.
Use YouTube normally
YASE shows up right on your playlists, Liked videos, and Watch Later — no separate app to open.
Build a local index
The extension indexes the metadata needed for search, tags, and notes — in the browser.
Search, tag, refine
Find what you kept, add context, and keep your library organized over time.
Supported browsers
Built for the browsers people actually use.
YASE is available now for Chrome and Chromium-family browsers through the Chrome Web Store. Firefox and Safari stay separate because they have dedicated builds.
Chromium build
Chrome, Edge, Brave, Opera, Vivaldi, and most Chromium-based browsers through the Chrome Web Store.
Add to Chrome
Firefox build
Dedicated Firefox package and AMO submission path.
Get notified
Safari build
Dedicated Safari extension flow through Apple's App Store path.
Get notifiedBrowser names and marks belong to their respective owners. Support listings do not imply affiliation, sponsorship, or endorsement.
Launch notification
Get one launch email for Firefox or Safari.
Chrome is available now. Choose Firefox or Safari and YASE sends one launch notification when that build is ready. No newsletter, no product analytics.
Coming next
Deeper YouTube customization.
Same archive. Same privacy. YASE is becoming a local control layer for how YouTube looks and feels.
YouTube skins
Local themes that restyle how YouTube looks, applied entirely in your browser.
Layout controls
Tune or hide the YouTube surfaces you do not use.
More local tools
Quality-of-life features that stay browser-side, like everything else in YASE.
Trust and review proof
Private by design, explicit where it matters.
Detailed data handling, permission rationale, and security boundaries live on dedicated pages that render without JavaScript.
No hidden analytics
Privacy policy, Limited Use statement, local/server data inventory, and deletion route.
Read the privacy policy →
Permissions explained
Browser permissions, host permissions, OAuth scopes, and why each is needed.
See every permission →
No remote code
Security model, validation boundaries, and disclosure contact.
Read the security model →
Limits, stated plainly
- YASE depends on supported YouTube pages and browser APIs that may change.
- Some actions require a browser tab signed into YouTube.
- YASE is independent from Google and YouTube.
- Firefox and Safari remain on the launch notification path.