Independent browser tools

Small, private browser tools.

No accounts, no servers, no tracking. Each tool does one job inside your browser, and tells you exactly what it touches.

Promise 1

Nothing sent to us

Your data stays in your browser. We run no server and no analytics.

Promise 2

No account, no email address, no login. Install and use.

Promise 3

One job per tool. Only the permissions that job needs. No ads.

The tools

日本語の使い方は、各カードの「日本語」から。

Turns the custom GPT settings you paste into a local backup and starter files for Claude and Gemini.

Coming soon to the Chrome Web StoreFree

What it touches

A simple countdown on top of your deck, in the editor and in slideshow mode.

Coming soon to the Chrome Web StoreFree

What it touches

READS: The presentation ID in the page address. Not your slides, titles, or names.
STORES: Timer settings in Chrome storage. Chrome Sync may copy them to your other browsers.
PERMISSIONS: storage and Google Slides pages only.
SENDS: Nothing to us. No server, no analytics.

Gives your events colors beyond the built-in palette, based on words in the event title.

Coming soon to the Chrome Web StoreFree, up to 3 rules

What it touches

READS: Event titles, on your device, only to pick a color. Titles are not stored.
STORES: Your color rules in Chrome storage. Chrome Sync may copy them to your other browsers.
PERMISSIONS: storage and Google Calendar pages only.
SENDS: Nothing to us. No server, no analytics.

Contact

One inbox for every tool. We reply in English or Japanese. A reply may take a few days.