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.

Add to Chrome See how it works

Requires Chrome 116+ Free No account

github.com/tabsmith/issues

GGmail

github · 3

GHIssues

GHPR #42

GHActions

FFigma

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.

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

SuggestionsNoteGroupsReminders

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

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.

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 ↗

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.

No. Tabsmith has no backend, no analytics, and no telemetry. Your notes, reminders, and settings live in chrome.storage.local on your machine. The only outbound request is to Google's public favicon service to draw site icons, and it carries nothing but the domain. Block it and every other feature still works.

Yes. Grouping, scoring, notes, and reminders all run locally, so they work with no connection at all. The only thing that needs the network is fetching site icons, and those are purely decorative.

Never without you. Suggestions are suggestions. Tabsmith surfaces an idea and waits. A group is created, a tab is filed, or a reminder is set only after an explicit click. You can dismiss anything, and it will not nag.

Only what the features require. tabs and tabGroups read tab URLs, titles, and group membership to cluster them. alarms fire reminders on time. notifications show them. storage saves your data locally. sidePanel renders the main surface. Host access lets tab reading work on any site you have open. It reads Chrome-exposed metadata only; it does not inject scripts or read page content.

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.