About

Four tab tools, one quiet place.

Larksail is a browser extension for people who keep too many tabs open because closing them feels like losing something. We think it shouldn’t.

01 The story

It started with one too many extensions.

Saving tabs, suspending them, merging windows and clearing out the old ones took four different tools. None of them talked to each other.

Close the tabs. Keep the work. And never wonder where something went.

Larksail began as an attempt to replace four extensions with one: collections to save tabs into, auto-suspend to free memory, merge windows, and an auto-archive that clears out tabs you’ve stopped using.

Putting them together made one rule possible across all of them: nothing is ever really gone. Whatever Larksail closes, on its own or because you asked, lands in a searchable archive and can be undone.

Then came the part the other tools never had: a library to find saved pages again, and notes to write down what you learned beside them. That’s the name’s promise today — a tab manager and notes, in one calm place that keeps your data on your computer.

Collections à la Toby
Auto-suspend à la Auto Tab Discard
Merge windows
Auto-archive a tab reaper

02 Principles

Six rules behind every decision.

They’re written down where we build Larksail, and every feature is weighed against them.

Never lose a tab

Every automatic close, move or merge goes through an action log and can be undone. Closed tabs go to the archive, never straight to oblivion.
Local-first, private by default

Your data lives on your device. No analytics, no remote code. Anything that leaves — AI with a provider you pick, sync — is off until you turn it on.
No artificial caps

Unlimited collections, saved tabs, spaces and notes in the free version. Pro charges for power, never for room.
Minimal permissions

Site access and the rest are optional, asked for at the moment a feature needs them, with a clear reason.
Feels native and fast

Keyboard-first, instant to open, no layout shift and no flash of the wrong theme. The new tab page paints before you notice.
Modern and quiet

Dense, precise and calm, with dark mode as a first-class citizen. Your pages are the color; the interface stays out of the way.

The no lock-in promise

Your data walks out whenever you do.

Every import and every export is free, for good. Take your whole library as JSON, your collections as bookmarks any browser can read, or your notes as plain Markdown. We’d rather you stay because Larksail is good, not because leaving is hard.

Coming from another tool?

JSON Everything, in one backup
HTML Bookmarks any browser reads
MD Collections and notes as Markdown
AUTO Scheduled backups to Downloads

03 Contact

Talk to the people who make it.

No ticket system and no bots. Every message is read and answered by a person.

Say hello Questions, ideas, or just how you use it. hello@larksail.com Help & feedback Report a bug or suggest a feature. Open Security How your data is protected, and how to report a problem. Read more

Four tab tools, one quiet place.

It started with one too many extensions.

Six rules behind every decision.

Never lose a tab

Local-first, private by default

No artificial caps

Minimal permissions

Feels native and fast

Modern and quiet

Your data walks out whenever you do.

Talk to the people who make it.