On-device A quiet craftsman for your tabs

Tabs you can
think with.

Smart, private tab grouping, reminders, and notes. Everything runs on your machine. Nothing is sent anywhere, and nothing is auto-applied without a click.

Requires Chrome 116+ Free No account
100% on-device No telemetry No sync Export anytime Requires Chrome 116+. Free. No account.
The craft

Small, local heuristics. Visible at every step.

No magic, no cloud model. Tabsmith reads the tab metadata Chrome already exposes, does the quiet work of sorting it, and waits for you to decide.

01

Smart group suggestions

Tabsmith clusters related tabs with domain bucketing and a token-similarity pass, then asks. “5 tabs from github.com, group them?” It surfaces the idea without thrashing your strip every time you open a tab.

  • Ranked by a confidence score you can see.
  • Suggestions are suggestions. Nothing applies until you click.
tabsmith 2 ideas
New group82% match
5 tabs look related. Group as “github”?
Label github · 5 tabs
New group71% match
3 tabs look related. Group as “figma”?
Label figma · 3 tabs
02

Add-to-group hints

Open a new tab and Tabsmith scores it against your live groups. A confident match becomes a single, calm prompt. A weak one stays quiet.

  • One click to file it, one to dismiss.
  • The threshold lives in Options. Tune it to taste.
New tab opened github.com
Add to group91% match
This looks like your “github” group.
Confidence 91% · threshold 70%

Below the threshold, Tabsmith says nothing. It would rather stay quiet than be wrong.

03

Reminders that outlive the tab

Pick 1h, 3h, Tomorrow, or Next week. The reminder fires at the chosen time even if you closed the tab, and reopens it on click. The snooze always shows the resolved fire time, so you know exactly when it returns.

  • Backed by Chrome alarms, so idle browsers still fire.
  • Custom durations, with your last choice remembered.
Remind me about this tab
Fires today at 4:30 PM
Reminder. The tab you closed is ready. Reopen ↗
04

A note that remembers why

“Why did I open this? Where did I stop?” Keep a short Markdown note keyed to a normalized URL, so the context you built up does not evaporate next visit. Pin the ones worth keeping.

  • Normalized URLs, so the note follows the page, not the query string.
  • Stored locally. Never indexed, never sent.
Notes 2 pinned
developer.mozilla.org/.../IntersectionObserver
Use rootMargin to pre-load. Stopped at the stagger section, revisit threshold math.
github.com/tabsmith/issues/214
Repro needs Chrome 116. Ask about the alarm edge case before closing.
The whole point

Privacy is not a setting. It is the architecture.

The cheapest way to keep your browsing private is to never collect it. Tabsmith has no backend to send anything to. The clustering that feels smart runs in the extension's own service worker, on your machine, and stops there.

0remote APIs
0trackers
0bytes synced
0%on your device
  • No remote APIs
    All clustering and scoring runs locally in the service worker. No model server, no inference call.
  • No content scripts on your pages
    Tabsmith reads only the tab metadata Chrome already exposes: URL, title, group id, color. It never touches page content.
  • No analytics, no telemetry, no sync
    There is no account and no tracking. Storage stays in chrome.storage.local and is never mirrored across devices.
  • One optional outbound request, documented
    Site icons load from Google's public favicon service. They are decorative. Block that domain and nothing else breaks.
  • Your data, your call
    Export everything to JSON, re-import it, or wipe it permanently from the Options page at any time.
Three surfaces

One system, wherever you reach for it.

Side panel, popup, and options share one keyboard-friendly design language. Light and dark follow your system by default.

Side panel

The home base. Suggestions, groups, the current note, and waiting reminders, docked beside the page.

Popup

Quick capture from the toolbar. Jot a note, set a reminder, accept a hint, and get back to work.

Options

The full settings room. Thresholds, snooze presets, theme, and one button to export or wipe everything.

Questions

The things worth asking.

Bring order to the noise. Quietly.

Add Tabsmith and let the tab strip become something you can think with. It runs on your machine, and it waits for your click.

Requires Chrome 116 or newer. Free. No account.