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Gather pages from the same site into native browser tab groups. Collapse groups and keep consistent colors; in all-windows mode, related groups move into the current window.

Pinned tabs stay where they are and are not grouped. Common multi-part and private domain suffixes receive special handling; this is not a full public suffix list.

KoiTab compares the complete URL, including its path, query and hash. Only identical addresses are duplicates, with pinned or active pages preferred when choosing what to keep.

For example, /article#notes and /article#comments remain distinct, as do /page and /page/.

Choose tabs unused for 3, 7 or 30 days. KoiTab writes their links to a local collection before closing pages that still meet the conditions.

If saving fails, the tabs stay open. Before closing, KoiTab rechecks the URL, window, access time and active state. Changed tabs are left alone.

In all-windows mode, the current window holds site groups, while ungrouped pages gather in another window. Groups sit on the left, loose tabs on the right.

Current-window mode does not move tabs between windows. Pinned tabs stay put, and the current window is never emptied while the popup is running.

Groups remember your open or collapsed preference. Automatically collapse groups at 5, 8 or 12 tabs, or search by title and URL to find a page quickly.

Search temporarily expands matching groups. Clearing the search restores their previous state.

KoiTab's collection stores archived links. Browser bookmarks are shown read-only and can be searched alongside it. Deleting a saved link does not delete a browser bookmark.

Deleting filtered results only affects the collection entries you confirmed. Hidden entries remain untouched.